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| GRM21A5C2D100GW01_ (0805, c0g:eia, 10pf, dc200v) _: packaging code reference sheet 1.scope 2.murata part no. system (ex.) 3. type & dimensions (unit:mm) 4.rated value ? soldering method flow / reflow 5.package product specifications in this catalog are as of sep.25,2018,and are subject to change or obsolescence without notice. please consult the approval sheet before ordering. please read rating and !cautions first. (3) temperature characteristics (public std code):c0g(eia) g 0.3 min. (5) nominal capacitance mark (4) rated voltage packaging unit dc 200 v temp. range (ref.temp.) (8) packaging 030 ppm/c 25 to 125 c (25 c) 0.7 min. (1)-1 l 2.00.2 (1)-2 w 1.250.2 this product specification is applied to chip multilayer ceramic capacitors used for general electronic equipment. do not use these products in any automotive power train or safety equipment including battery chargers for electric vehicles and plugin hybrids. (2) t e chip multilayer ceramic capacitors for general purpose specifications and test methods (operating temp. range) temp. coeff or cap. change 2 % (6) capacitance tolerance 10 pf 1.0+0/-0.3 -55 to 125 c d f 180mm reel paper w8p4 4000 pcs./reel j f 330mm reel paper w8p4 10000 pcs./reel (1)l/w dimensions (2)t dimensions (3)temperature characteristics (4)rated voltage (5)nominal capacitance (6)capacitance tolerance (8)packaging code (7)muratas control code GRM21A5C2D100GW01-01 1 grm 21 a 5c 2d 100 g w01 d
specifications and test methods no 1 appearance no defects or abnormalities. visual inspection. 2 dimension within the specified dimensions. using calipers and micrometers. 3 voltage proof no defects or abnormalities. measurement point : between the terminations test voltage : 200% of the rated voltage (rated voltage:dc200v,dc250v) 150% of the rated voltage (rated voltage:dc500v,dc630v) 130% of the rated voltage (rated voltage:dc1kv,dc2kv) (rated voltage(7u only):dc3.15kv) applied time : 1 to 5 s charge/discharge current : 50ma max. 4 insulation resistance(i.r.) more than 10000m or 100m ? f measurement point : between the terminations (whichever is smaller) measurement voltage : dc200+/-20v(rated voltage:dc200v) dc250+/-25v(rated voltage:dc250v) dc500+/-50v (rated voltage:dc500v,dc630v,dc1kv,dc2kv) (rated voltage(7u only):dc3.15kv) charging time : 60+/-5s measurement temperature: room temperature 5 capacitance shown in rated value. measurement temperature: room temperature 6 q 1000 min. 7 temperature 5c:0+/-30 ppm/c (temp.range:+25 to +125c) the capacitance change should be measured after 5 min. characteristics 0+30/-72 ppm/c (temp.range:-55 to +25c) at each specified temp. stage. of capacitance capacitance value as a reference is the value in step 3. 7u -750+/-120 ppm/c (temp.range:+25 to +125 ) -750+120/-347 ppm/c (temp.range:-55 to +25 ) 8 vibration appearance no defects or abnormalities. solder the capacitor on the test substrate a shown in "complement of test capacitance within the specified initial value. method. q within the specified initial value. kind of vibration : a simple harmonic motion 10hz to 55hz to 10hz (1min) total amplitude : 1.5mm this motion should be applied for a period of 2h in each 3 mutually perpendicular directions(total of 6h). 9 solderability 95% of the terminations is to be soldered evenly and test method : solder bath method continuously. flux : solution of rosin ethanol 25(wt)% preheat : 80 to 120 for 10s to 30s solder : sn-3.0ag-0.5cu (lead free solder) solder temp. : 245+/-5 immersion time : 2+/-0.5s immersing in speed : 25+/-2.5mm/s. 10 resistance appearance no defects or abnormalities. test method : solder bath method to solder : sn-3.0ag-0.5cu (lead free solder) soldering capacitance within +/-2% or +/-0.3pf (whichever is larger) solder temp. : 260+/-5 heat change immersion time : 10+/-1s immersing in speed : 25+/-2.5mm/s. q within the specified initial value. exposure time : 24+/-2h at room condition*. i.r. within the specified initial value. preheat : grm31 size max.: 120 to 150 for 1 min grm32 size min. : 100 to 120 for 1 min voltage proof no defects. and 170 to 200 for 1 min *room condition : temperature:15 to 35c, relative humidity:45 to 75%, atmosphere pressure:86 to 106kpa item specification test method (ref. standard:jis c 5101, iec60384 jemcgs-04233d 2 capacitance frequency voltage c 1000pf 1.0+/ - 0.1mhz ac 0.5 to 5 .0 v(r.m.s) c 1000pf 1.0+/ - 0.1khz ac 1.0+/ - 0.2v(r.m.s) step temperature( ? c ) 1 reference temp.+/ - 2 2 min.operating temp. +/ - 3 3 reference temp. +/ - 2 4 max.operating temp. +/ - 3 5 reference temp. +/ - 2 no 11 adhesive strength no removal of the terminations or other defect solder the capacitor on the test substrate a shown in "complement of test of termination should occur. method. applied direction : in parallel with the test substrate and vertical with the capacitor side. 12 substrate appearance no defects or abnormalities. solder the capacitor on the test substrate b shown in "complement of test bending test method. then apply the force in the direction shown in test method of substrate capacitance within +/-2% or +/-0.3pf (whichever is larger) bending test of complement of test method. change flexure : 1mm holding time : 5+/-1s soldering method : reflow soldering 13 temperature appearance no defects or abnormalities. fix the capacitor to the supporting test substrate a (glass epoxy board) sudden change shown in complement of test method. perform the 5 cycles according to the four heat treatments capacitance within +/-2% or +/-0.3pf (whichever is larger) shown in the following table. change q 500 min. i.r. within the specified initial value. exposure time : 24+/-2h at room condition*. voltage proof no defects. 14 humidity appearance no defects or abnormalities. fix the capacitor to the supporting test substrate a (glass epoxy board) (steady state) shown in complement of test method. capacitance within +/-2% or +/-0.3pf (whichever is larger) test temperature : 40+/-2 change test humidity : 90% to 95%rh test time : 500+24/-0h q 350 min. exposure time : 24+/-2h at room condition*. i.r. more than 1000m or 10m ? f (whichever is smaller) voltage proof no defects. 15 durability appearance no defects or abnormalities. fix the capacitor to the supporting test substrate a (glass epoxy board) shown in complement of test method. test temperature : max. operating temp. +/-3 capacitance within +/-2% or +/-0.3pf (whichever is larger) test time : 1000+48/-0h change applied voltage : 150% of the rated voltage (rated voltage:dc200v,dc250v) 120% of the rated voltage q 350 min. (rated voltage:dc500v,dc630v,dc1kv,dc2kv) (rated voltage(7u only):dc3.15kv) i.r. more than 1000m or 10m ? f charge/discharge current : 50ma max. (whichever is smaller) exposure time : 24+/-2h at room condition*. voltage proof no defects. *room condition : temperature:15 to 35c, relative humidity:45 to 75%, atmosphere pressure:86 to 106kpa item specification test method (ref. standard:jis c 5101, iec60384 10n, 10+/ - 1s jemcgs-04233d 3 step temp.( ? c ) time (m in ) 1 min.operating temp.+0/ - 3 30 +/ - 3 2 room temp 2 to 3 3 max.operating temp.+3/ - 0 30 +/ - 3 4 room temp 2 to 3 complement of test method 1.test substrate the test substrate should be substrate a or substrate b as described in specifications and test methods. the specimen should be soldered by the conditions as described below. soldering method : reflow soldering solder : sn-3.0ag-0.5cu (1) test substrate a ? land dimensions ? material : glass epoxy board ? thickness : 1.6mm ? thickness of copper foil : 0.035mm (1) test substrate b ? material : glass epoxy board ? thickness of copper foil : 0.035mm 2. test method of substrate bending test a) support state (b) test state a:+/-2 gap between support stand center and test stand b: +/- 5 gap between support stand center and test stand center material of test stand and pressure stick the material shoud be a metal where a remarkable transformation and the distortion are not caused even if it is pressurized. pressurizing speed the pressurizing speed is pressurized at the speed of about 1mm/s until the flexure reaches a regulated value. 40 b d c ( f 4.5) a 100 1.6 copper foil solder resist (unit : mm) a 45+/ - 2 test substrate b capacitor test stand 45+/ - 2 support stand ( f 5) 50 min. 20 b test substrate b support stand pressure stick (unit : mm) jemcgs-04233d 4 c b a solder resist chip capacitor land type dimension (mm) a b c grm 18 1.0 3.0 1.2 grm 21 1.2 4.0 1.65 grm 31 2.2 5.0 2.0 grm 32 2.2 5.0 2.9 grm 42 3.5 7.0 2.4 grm 43 3.5 7.0 3.7 grm 52 4.5 8.0 3.2 grm 55 4.5 8.0 5.6 type dimension of pettern (mm) a b c d grm 18 1.0 3.0 1.2 1.0 grm 21 1.2 4.0 1.65 1.0 grm 31 2.2 5.0 2.0 1.0 grm 32 2.2 5.0 2.9 1.0 grm 42 3.5 7.0 2.4 1.0 grm 43 3.5 7.0 3.7 1.0 grm 52 4.5 8.0 3.2 1.0 grm 55 4.5 8.0 5.6 1.0 45 45 pressure stick support capacitor f r 5 l support stand (unit : mm) dimensions of chip [lw] 1.60.8 1.05 1.85 2.01.25 1.45 2.25 3.21.6 2.0 3.6 3.22.5 2.9 3.6 (b) type b (dimensions of chip : apply to 4.5x2.0) (unit : mm) dimensions of chip [lw] 4.52.0 2.5 5.1 a* b* (c) the sprocket holes are to the right as the tape is pulled toward the user. (2) packed chips (3) dimensions of tape (a) type a (dimensions of chip : apply to 1.6x0.8 , 2.0x1.25 , 3.2x1.6 , 3.2x2.5) a* b* package (1) appearance of taping (a) paper tape bottom tape (thickness: around 50 ? m) is attached below base tape with sprocket and put top tape (thickness: around 50 ? m) on capacitor. (b) plastic tape cover tape (thickness: around 60 ? m) is put on capacitor on base tape (blister carrier tape). capacitor f 1.5+0.1/ - 0 8.0 0.3 2.0 0.05 4.0 0.1 1.75 0.1 3.5 0.05 a b 4.0 0.1 12.0 0.3 2.0 0.05 4.0 0.1 4.0 0.1 1.75 0.1 5.5 0.05 a b f 1.5+0.1/ - 0 0.3 0.1 3.7max. ? dimensions of a,b : nominal value ? dimensions of a,b : nominal value (plastic tape) (paper tape) 1.1 max. 0.25 0.1(t Q 2.0mm) 0.3 0.1(t=2.5mm) 2.5 max. (t Q 2.0mm) 3.7 max. ( t=2.5mm) jemcgp-03074b 5 (unit : mm) dimensions of chip [lw] 4.53.2 3.6 4.9 5.72.8 3.2 6.1 5.75.0 5.4 6.1 (unit : mm) (unit : mm) (10) peeling off force : 0.1 to 0.6n in the direction shown on the follows. (5) part of the leader and part of the empty tape shall be attached to the end of the tape as follows. (6) the top tape or cover tape and base tape are not attached at the end of the tape for a minimum of 5 pitches. (7) missing capacitors number within 0.1% of the number per reel or 1pc, whichever is greater, and not continuous. (8) the top tape or cover tape and bottom tape shall not protrude beyond the edges of the tape and shall not cover sprocket holes. (9) cumulative tolerance of sprocket holes, 10 pitches : 0.3mm. package (c) type c (dimensions of chip : apply to 4.5x3.2 to 5.7x5.0) a* b* (4) dimensions of reel f 1.5+0.1/ - 0 8.0 0.1 12.0 0.3 2.0 0.05 4.0 0.1 1.75 0.1 a b 5.5 0.05 ? dimensions of a,b : nominal value base tape top tape or cover tape 165 to 180 direction of feed vacant section : 190 min. chip - mounting unit vacant section : 160 min. 210 min. 0.3 0.1 3.7max. 2.0 0.5 f 21 0.8 f 13 0.2 13.0 1.0 : tape width 8mm 17.0 1.0 : tape width 12mm 9.0+1.0/ - 0 : tape width 8mm 13.0+1.0/ - 0 : tape width 12mm 180+0/ - 1.5 330+0/ - 3.0 60+1/ - 0( f 180mmreel) 100+1/ - 0( f 330mmreel) jemcgp-03074b 6 caution limitation of applications please contact us before using our products for the applications listed below which require especially high reliability for the prevention of defects which might directly cause damage to the third party's life, body or property. aircraft equipment aerospace equipment undersea equipment power plant control equipment medical equipment transportation equipment(vehicles,trains,ships,etc.) traffic signal equipment disaster prevention / crime prevention equipment data-processing equipment application of similar complexity and/or reliability requirements to the applications listed in the above. storage and operation condition 1. the performance of chip multilayer ceramic capacitors (henceforth just "capacitors") may be affected by the storage conditions. please use them promptly after delivery. 1-1. maintain appropriate storage for the capacitors using the following conditions: room temperature of +5 to +40 and a relative humidity of 20% to 70%. high temperature and humidity conditions and/or prolonged storage may cause deterioration of the packaging materials. if more than six months have elapsed since delivery, check packaging, mounting, etc. before use. in addition, this may cause oxidation of the electrodes. if more than one year has elapsed since delivery, also check the solderability before use. 1-2. corrosive gas can react with the termination (external) electrodes or lead wires of capacitors, and result in poor solderability. do not store the capacitors in an atmosphere consisting of corrosive gas (e.g.,hydrogen sulfide, sulfur dioxide, chlorine, ammonia gas etc.). 1-3. due to moisture condensation caused by rapid humidity changes, or the photochemical change caused by direct sunlight on the terminal electrodes and/or the resin/epoxy coatings, the solderability and electrical performance may deteriorate. do not store capacitors under direct sunlight or in high huimidity conditions ! jemcgc-05049f 7 rating 1.temperature dependent characteristics 1. the electrical characteristics of the capacitor can change with temperature. 1-1. for capacitors having larger temperature dependency, the capacitance may change with temperature changes. the following actions are recommended in order to ensure suitable capacitance values. (1) select a suitable capacitance for the operating temperature range. (2) the capacitance may change within the rated temperature. when you use a high dielectric constant type capacitor in a circuit that needs a tight (narrow) capacitance tolerance (e.g., a time-constant circuit), please carefully consider the temperature characteristics, and carefully confirm the various characteristics in actual use conditions and the actual system. 2.measurement of capacitance 1. measure capacitance with the voltage and frequency specified in the product specifications. 1-1. the output voltage of the measuring equipment may decrease occasionally when capacitance is high. please confirm whether a prescribed measured voltage is impressed to the capacitor. 1-2. the capacitance values of high dielectric constant type capacitors change depending on the ac voltage applied. please consider the ac voltage characteristics when selecting a capacitor to be used in a ac circuit. 3.applied voltage 1. do not apply a voltage to the capacitor that exceeds the rated voltage as called out in the specifications. 1-1. applied voltage between the terminals of a capacitor shall be less than or equal to the rated voltage. (1) when ac voltage is superimposed on dc voltage, the zero-to-peak voltage shall not exceed the rated dc voltage. when ac voltage or pulse voltage is applied, the peak-to-peak voltage shall not exceed the rated dc voltage. (2) abnormal voltages (surge voltage, static electricity, pulse voltage, etc.) shall not exceed the rated dc voltage. typical voltage applied to the dc capacitor dc voltage dc voltage+ac ac voltage pulse voltage (e maximum possible applied voltage.) 1-2. influence of over voltage over voltage that is applied to the capacitor may result in an electrical short circuit caused by the breakdown of the internal dielectric layers . the time duration until breakdown depends on the applied voltage and the ambient temperature. 2. use a safety standard certified capacitor in a power supply input circuit (ac filter), as it is also necessary to consider the withstand voltage and impulse withstand voltage defined for each device. caution ! jemcgc-05049f 8 e e e e 0 0 0 0 4.type of applied voltage and self-heating temperature 1.confirm the operating conditions to make sure that no large current is flowing into the capacitor due to the continuous application of an ac voltage or pulse voltage. when a dc rated voltage product is used in an ac voltage circuit or a pulse voltage circuit, the ac current or pulse current will flow into the capacitor; therefore check the self-heating condition. please confirm the surface temperature of the capacitor so that the temperature remains within the upper limits of the operating temperature, including the rise in temperature due to self-heating. when the capacitor is used with a high-frequency voltage or pulse voltage, heat may be generated by dielectric loss. the surface temperature of the capacitor : 125c or less (including self-heating) 2012m/0805(2012m:metric size code) c0g(5c) char. rated voltage : dc500v c0g(5c) char. rated voltage : dc630v except for 2012m/0805(2012m:metric size code) c0g(5c) char. rated voltage : dc630v c0g(5c) char. rated voltage : dc1kv c0g(5c) char. rated voltage : dc3.15kv the capacitors less than 22pf can be applied maximum 4.0kv peak to peak at 100khz or less only for the ballast or the resonance usage in the cfl inverter circuit. frequency vs allowable sine wave voltage caution ! jemcgc-05049f 10 10 100 1000 10 100 1000 allowable sine wave voltage [vp - p] frequency [khz] ~470pf 680pf 1000pf 1200pf 2200pf (630v) allowable sine wave voltage[vp - p] allowable sine wave voltage[vp - p] allowable sine wave voltage[vp - p] the surface temperature of the capacitor : 125c or less (including self-heating) u2j(7u) char. rated voltage : dc200v u2j(7u) char. rated voltage : dc250v u2j(7u) char. rated voltage : dc500v u2j(7u) char. rated voltage : dc630v u2j(7u) char. rated voltage : dc1 kv u2j(7u) char. rated voltage : dc2 kv frequency vs allowable sine wave voltage caution ! jemcgc-05049f 11 allowable sine wave voltage[vp - p] allowable sine wave voltage[vp - p] allowable sine wave voltage[vp - p] allowable sine wave voltage[vp - p] allowable sine wave voltage[vp - p] allowable sine wave voltage[vp - p] the surface temperature of the capacitor : 125c or less (including self-heating) u2j(7u) char. rated voltage : dc3.15kv frequency vs allowable sine wave voltage 5.vibration and shock 1. please confirm the kind of vibration and/or shock, its condition, and any generation of resonance. please mount the capacitor so as not to generate resonance, and do not allow any impact on the terminals. 2. mechanical shock due to being dropped may cause damage or a crack in the dielectric material of the capacitor. do not use a dropped capacitor because the quality and reliability may be deteriorated. 3. when printed circuit boards are piled up or handled, the corner of another printed circuit board should not be allowed to hit the capacitor in order to avoid a crack or other damage to the capacitor. caution ! crack floor mounting printed circuit board crack jemcgc-05049f 12 allowable sine wave voltage[vp - p] soldering and mounting 1.mounting position 1. confirm the best mounting position and direction that minimizes the stress imposed on the capacitor during flexing or bending the printed circuit board. 1-1.choose a mounting position that minimizes the stress imposed on the chip during flexing or bending of the board. [component direction] locate chip horizontal to the direction in which stress acts. (bad example) (good example) [chip mounting close to board separation point] it is effective to implement the following measures, to reduce stress in separating the board. it is best to implement all of the following three measures; however, implement as many measures as possible to reduce stress. stress level (1) turn the mounting direction of the component parallel to the board separation surface. a > d *1 (2) add slits in the board separation part. a > b (3) keep the mounting position of the component away from the board separation surface. a > c *1 a > d is valid when stress is added vertically to the perforation as with hand separation. if a cutting disc is used, stress will be diagonal to the pcb, therefore a > d is invalid. [mounting capacitors near screw holes] when a capacitor is mounted near a screw hole, it may be affected by the board deflection that occurs during the tightening of the screw. mount the capacitor in a position as far away from the screw holes as possible. 2.information before mounting 1. do not re-use capacitors that were removed from the equipment. 2. confirm capacitance characteristics under actual applied voltage. 3. confirm the mechanical stress under actual process and equipment use. 4. confirm the rated capacitance, rated voltage and other electrical characteristics before assembly. 5. prior to use, confirm the solderability of capacitors that were in long-term storage. 6. prior to measuring capacitance, carry out a heat treatment for capacitors that were in long-term storage. 7.the use of sn-zn based solder will deteriorate the reliability of the mlcc. please contact our sales representative or product engineers on the use of sn-zn based solder in advance. caution contents of measures screw hole recommended ! jemcgc-05049f 13 1c 1 b 1 a perforation s lit a b c d 1 a 3.maintenance of the mounting (pick and place) machine 1. make sure that the following excessive forces are not applied to the capacitors. check the mounting in the actual device under actual use conditions ahead of time. 1-1. in mounting the capacitors on the printed circuit board, any bending force against them shall be kept to a minimum to prevent them from any damage or cracking. please take into account the following precautions and recommendations for use in your process. (1) adjust the lowest position of the pickup nozzle so as not to bend the printed circuit board. [incorrect] [correct] 2.dirt particles and dust accumulated in the suction nozzle and suction mechanism prevent the nozzle from moving smoothly. this creates excessive force on the capacitor during mounting, causing cracked chips. causing cracked chips. also, the locating claw, when worn out, imposes uneven forces on the chip when positioning, causing cracked chips. the suction nozzle and the locating claw must be maintained, checked and replaced periodically. caution ! jemcgc-05049f 14 board guide board suction nozzle deflection support pin 4-1.reflow soldering 1. when sudden heat is applied to the components, the [standard conditions for reflow soldering] mechanical strength of the components will decrease because a sudden temperature change causes deformation inside the components. in order to prevent mechanical damage to the components, preheating is required for both the components and the pcb. preheating conditions are shown in table 1. it is required to keep the temperature differential between the solder and the components surface (t) as small as possible. 2. when components are immersed in solvent after mounting, be sure to maintain the temperature difference (t) between the component and the solvent within the range shown in the table 1. [allowable reflow soldering temperature and time] table 1 in the case of repeated soldering, the accumulated soldering time must be within the range shown above. recommended conditions lead free solder : sn-3.0ag-0.5cu 3. when a capacitor is mounted at a temperature lower than the peak reflow temperature recommended by the solder manufacturer, the following quality problems can occur. consider factors such as the placement of peripheral components and the reflow temperature setting to prevent the capacitors reflow temperature from dropping below the peak temperature specified. be sure to evaluate the mounting situation beforehand and verify that none of the following problems occur. ? drop in solder wettability ? solder voids ? possible occurrence of whiskering ? drop in bonding strength ? drop in self-alignment properties ? possible occurrence of tombstones and/or shifting on the land patterns of the circuit board 4. optimum solder amount for reflow soldering 4-1. overly thick application of solder paste results in a excessive solder fillet height. this makes the chip more susceptible to mechanical and thermal stress on the board and may cause the chips to crack. 4-2. too little solder paste results in a lack of adhesive strength on the termination, which may result in chips breaking loose from the pcb. 4-3. please confirm that solder has been applied smoothly to the termination. make sure not to impose any abnormal mechanical shocks to the pcb. atmosphere air or n 2 inverting the pcb gr 32/42/43/52/55 t Q 130 lead free solder peak temperature 240 to 260 caution series chip dimension(l/w) code temperature differential gr 18/21/31 t Q 190 ! jemcgc-05049f 15 soldering temperature( ) soldering time(s ) 280 270 260 250 240 230 220 0 3 0 6 0 12 0 9 0 temperature( ) peak temperature soldering gradual cooling preheating t 60 - 120 seconds 30 - 60 seconds time 190 170 150 220 4-2.flow soldering 1. do not apply flow soldering to chips not listed in table 2. [standard conditions for flow soldering] table 2 series gr 2. when sudden heat is applied to the components, the mechanical strength of the components will decrease because a sudden temperature change causes deformation inside the components. in order to prevent mechanical damage to the components, preheating is required for both of the components and the pcb. preheating conditions are shown in table 2. it is required to [allowable flow soldering temperature and time] keep the temperature differential between the solder and the components surface (t) as low as possible. 3. excessively long soldering time or high soldering temperature can result in leaching of the terminations, causing poor adhesion or a reduction in capacitance value due to loss of contact between the inner electrodes and terminations. 4. when components are immersed in solvent after mounting, be sure to maintain the temperature differential (t) between the component and solvent within the range shown in the table 2. in the case of repeated soldering, the accumulated soldering time must be within the range shown above. recommended conditions lead free solder : sn-3.0ag-0.5cu 5. optimum solder amount for flow soldering 5-1. the top of the solder fillet should be lower than the thickness of the components. if the solder amount is excessive, the risk of cracking is higher during board bending or any other stressful condition. preheating peak temperature 100 to 120 soldering peak temperature 250 to 260 atmosphere air or n2 caution chip dimension(l/w) code temperature differential 18/21/31 t Q 150 lead free solder ! jemcgc-05049f 16 soldering mperature( ) soldering time(s ) 280 270 260 250 240 230 220 0 10 20 40 30 temperature( ) soldering peak temperature preheating peak temperature 3 0 - 90 seconds preheating 5 seconds max. time gradual cooling soldering t up to chip thickness adhesive in section 4-3.correction of soldered portion when sudden heat is applied to the capacitor, distortion caused by the large temperature difference occurs internally, and can be the cause of cracks. capacitors also tend to be affected by mechanical and thermal stress depending on the board preheating temperature or the soldering fillet shape, and can be the cause of cracks. please refer to "1. pcb design" or "3. optimum solder amount" for the solder amount and the fillet shapes. 1. correction with a soldering iron 1-1. in order to reduce damage to the capacitor, be sure to preheat the capacitor and the mounting board. preheat to the temperature range shown in table 3. a hot plate, hot air type preheater, etc. can be used for preheating. 1-2. after soldering, do not allow the component/pcb to cool down rapidly. 1-3. perform the corrections with a soldering iron as quickly as possible. if the soldering iron is applied too long, there is a possibility of causing solder leaching on the terminal electrodes, which will cause deterioration of the adhesive strength and other problems. table 3 * lead free solder : sn-3.0ag-0.5cu *please manage t in the temperature of soldering iron and the preheating temperature. 2. correction with spot heater compared to local heating with a soldering iron, hot air heating by a spot heater heats the overall component and board, therefore, it tends to lessen the thermal shock. in the case of a high density mounted board, a spot heater can also prevent concerns of the soldering iron making direct contact with the component. 2-1. if the distance from the hot air outlet of the spot heater to the component is too close, cracks may occur due to thermal shock. to prevent this problem, follow the conditions shown in table 4. 2-2. in order to create an appropriate solder fillet shape, it is recommended that hot air be applied at the angle shown in figure 1. table 4 distance 5mm or more hot air application angle 45 *figure 1 hot air temperature nozzle outlet 400c max. less than 10 seconds application time (3216m / 1206 size or smaller) less than 30 seconds (3225m / 1210 size or larger) (3216m , 3225m : metric size code) 3. optimum solder amount when re-working with a soldering iron 3-1. if the solder amount is excessive, the risk of cracking is higher during board bending or any other stressful condition. too little solder amount results in a lack of adhesive strength on the termination, which may result in chips breaking loose from the pcb. please confirm that solder has been applied smoothly is in section and rising to the end surface of the chip. 3-2. a soldering iron with a tip of ?3mm or smaller should be used. it is also necessary to keep the soldering iron from touching the components during the re-work. 3-3. solder wire with ?0.5mm or smaller is required for soldering. gr 32/42/43/52/55 280 max. 150 min. t Q 130 air gr 18/21/31 350 max. 150 min. t Q 190 air caution series chip dimension (l/w) code temperature of soldering iron tip preheating temperature temperature differential(t) atmosphere ! one - hole nozzle an angle of 45 [figure 1] jemcgc-05049f 17 solder amount 5.washing excessive ultrasonic oscillation during cleaning can cause the pcbs to resonate, resulting in cracked chips or broken solder joints. before starting your production process, test your cleaning equipment / process to insure it does not degrade the capacitors. 6.electrical test on printed circuit board 1. confirm position of the support pin or specific jig, when inspecting the electrical performance of a capacitor after mounting on the printed circuit board. 1-1. avoid bending the printed circuit board by the pressure of a test-probe, etc. the thrusting force of the test probe can flex the pcb, resulting in cracked chips or open solder joints. provide support pins on the back side of the pcb to prevent warping or flexing. install support pins as close to the test-probe as possible. 1-2. avoid vibration of the board by shock when a test -probe contacts a printed circuit board. [not recommended] [recommended] 7.printed circuit board cropping 1. after mounting a capacitor on a printed circuit board, do not apply any stress to the capacitor that caused bending or twisting the board. 1-1. in cropping the board, the stress as shown may cause the capacitor to crack. cracked capacitors may cause deterioration of the insulation resistance, and result in a short. avoid this type of stress to a capacitor. [bending] [twisting] 2. check the cropping method for the printed circuit board in advance. 2-1. printed circuit board cropping shall be carried out by using a jig or an apparatus (disc separator, router type separator, etc.) to prevent the mechanical stress that can occur to the board. * when a board separation jig or disc separator is used, if the following precautions are not observed, a large board deflection stress will occur and the capacitors may crack. use router type separator if at all possible. notes hand and nipper separation apply a high level of stress. use another method. board handling board bending direction layout of capacitors board handling layout of slits design of v groove arrangement of blades controlling blade life board handling level of stress on board high medium medium low recommended * * ? caution board separation method hand separation nipper separation (1) board separation jig board separation apparatus 2) disc separator 3) router type separator ! peeling test - probe support pin test - probe jemcgc-05049f 18 1 a (1) example of a suitable jig [in the case of single-side mounting] an outline of the board separation jig is shown as follows. recommended example: stress on the component mounting position can be minimized by holding the portion close to the jig, and bend in the direction towards the side where the capacitors are mounted. not recommended example: the risk of cracks occurring in the capacitors increases due to large stress being applied to the component mounting position, if the portion away from the jig is held and bent in the direction opposite the side where the capacitors are mounted. [outline of jig] [hand separation] [in the case of double-sided mounting] since components are mounted on both sides of the board, the risk of cracks occurring can not be avoided with the above method. therefore, implement the following measures to prevent stress from being applied to the components. (measures) (1) consider introducing a router type separator. if it is difficult to introduce a router type separator, implement the following measures. (refer to item 1. mounting position) (2) mount the components parallel to the board separation surface. (3) when mounting components near the board separation point, add slits in the separation position near the component. (4) keep the mounting position of the components away from the board separation point. (2) example of a disc separator an outline of a disc separator is shown as follows. as shown in the principle of operation, the top blade and bottom blade are aligned with the v-grooves on the printed circuit board to separate the board. in the following case, board deflection stress will be applied and cause cracks in the capacitors. (1) when the adjustment of the top and bottom blades are misaligned, such as deviating in the top-bottom, left-right or front-rear directions (2) the angle of the v groove is too low, depth of the v groove is too shallow, or the v groove is misaligned top-bottom if v groove is too deep, it is possible to brake when you handle and carry it. carefully design depth of the v groove with consideration about strength of material of the printed circuit board. [ outline of machine ] [ principle of operation ] [ cross-section diagram ] [disc separator] top blade top blade top blade top blade bottom blade bottom blade bottom blade bottom blade [v-groove design] example of recommended v-groove design not recommended left-right misalignment low-angle depth too shallow depth too deep caution recommended not recommended recommended not recommended top-bottom misalignment left-right misalignment front-rear misalignment printed circuit board top blade v - groove bottom blade top blade printed circuit board v - groove ! board cropping jig v - groove printed circuit board jemcgc-05049f 19 printed circuit board components load point direction of load printed circuit board component s load point direction of load (3) example of router type separator the router type separator performs cutting by a router rotating at a high speed. since the board does not bend in the cutting process, stress on the board can be suppressed during board separation. when attaching or removing boards to/from the router type separator, carefully handle the boards to prevent bending. 8. assembly 1. handling if a board mounted with capacitors is held with one hand, the board may bend. firmly hold the edges of the board with both hands when handling. if a board mounted with capacitors is dropped, cracks may occur in the capacitors. do not use dropped boards, as there is a possibility that the quality of the capacitors may be impaired. 2. attachment of other components 2-1. mounting of other components pay attention to the following items, when mounting other components on the back side of the board after capacitors have been mounted on the opposite side. when the bottom dead point of the suction nozzle is set too low, board deflection stress may be applied to the capacitors on the back side (bottom side), and cracks may occur in the capacitors. after the board is straightened, set the bottom dead point of the nozzle on the upper surface of the board. periodically check and adjust the bottom dead point. 2-2. inserting components with leads into boards when inserting components (transformers, ic, etc.) into boards, bending the board may cause cracks in the capacitors or cracks in the solder. pay attention to the following. increase the size of the holes to insert the leads, to reduce the stress on the board during insertion. fix the board with support pins or a dedicated jig before insertion. support below the board so that the board does not bend. when using support pins on the board, periodically confirm that there is no difference in the height of each support pin. 2-3. attaching/removing sockets and/or connectors insertion and removal of sockets and connectors, etc., might cause the board to bend. please insure that the board does not warp during insertion and removal of sockets and connectors, etc., or the bending may damage mounted components on the board. 2-4. tightening screws the board may be bent, when tightening screws, etc. during the attachment of the board to a shield or chassis. pay attention to the following items before performing the work. plan the work to prevent the board from bending. use a torque screwdriver, to prevent over-tightening of the screws. the board may bend after mounting by reflow soldering, etc. please note, as stress may be applied to the chips by forcibly flattening the board when tightening the screws. caution ! suction nozzle component with leads socket screwdriver [ outline drawing ] router jemcgc-05049f 20 others 1. under operation of equipment 1-1. do not touch a capacitor directly with bare hands during operation in order to avoid the danger of an electric shock. 1-2. do not allow the terminals of a capacitor to come in contact with any conductive objects (short-circuit). do not expose a capacitor to a conductive liquid, inducing any acid or alkali solutions. 1-3. confirm the environment in which the equipment will operate is under the specified conditions. do not use the equipment under the following environments. (1) being spattered with water or oil. (2) being exposed to direct sunlight. (3) being exposed to ozone, ultraviolet rays, or radiation. (4) being exposed to toxic gas (e.g., hydrogen sulfide, sulfur dioxide, chlorine, ammonia gas etc.) (5) any vibrations or mechanical shocks exceeding the specified limits. (6) moisture condensing environments. 1-4. use damp proof countermeasures if using under any conditions that can cause condensation. 2. others 2-1. in an emergency (1) if the equipment should generate smoke, fire, or smell, immediately turn off or unplug the equipment. if the equipment is not turned off or unplugged, the hazards may be worsened by supplying continuous power. (2) in this type of situation, do not allow face and hands to come in contact with the capacitor or burns may be caused by the capacitor's high temperature. 2-2. disposal of waste when capacitors are disposed of, they must be burned or buried by an industrial waste vendor with the appropriate licenses. 2-3. circuit design (1) addition of fail safe function capacitors that are cracked by dropping or bending of the board may cause deterioration of the insulation resistance, and result in a short. if the circuit being used may cause an electrical shock, smoke or fire when a capacitor is shorted, be sure to install fail-safe functions, such as a fuse, to prevent secondary accidents. (2) capacitors used to prevent electromagnetic interference in the primary ac side circuit, or as a connection/insulation, must be a safety standard certified product, or satisfy the contents stipulated in the electrical appliance and material safety law. install a fuse for each line in case of a short. (3) this series is not safety standard certified products. 2-4. remarks failure to follow the cautions may result, worst case, in a short circuit and smoking when the product is used. the above notices are for standard applications and conditions. contact us when the products are used in special mounting conditions. select optimum conditions for operation as they determine the reliability of the product after assembly. the data herein are given in typical values, not guaranteed ratings. caution ! jemcgc-05049f 21 rating 1.operating temperature 1. the operating temperature limit depends on the capacitor. 1-1. do not apply temperatures exceeding the maximum operating temperature. it is necessary to select a capacitor with a suitable rated temperature that will cover the operating temperature range. it is also necessary to consider the temperature distribution in equipment and the seasonal temperature variable factor. 1-2. consider the self-heating factor of the capacitor the surface temperature of the capacitor shall not exceed the maximum operating temperature including self-heating. 2.atmosphere surroundings (gaseous and liquid) 1. restriction on the operating environment of capacitors. 1-1. capacitors, when used in the above, unsuitable, operating environments may deteriorate due to the corrosion of the terminations and the penetration of moisture into the capacitor. 1-2. the same phenomenon as the above may occur when the electrodes or terminals of the capacitor are subject to moisture condensation. 1-3. the deterioration of characteristics and insulation resistance due to the oxidization or corrosion of terminal electrodes may result in breakdown when the capacitor is exposed to corrosive or volatile gases or solvents for long periods of time. notice jemcgc-05049f 22 soldering and mounting 1.pcb design 1. notice for pattern forms 1-1. unlike leaded components, chip components are susceptible to flexing stresses since they are mounted directly on the substrate. they are also more sensitive to mechanical and thermal stresses than leaded components. excess solder fillet height can multiply these stresses and cause chip cracking. when designing substrates, take land patterns and dimensions into consideration to eliminate the possibility of excess solder fillet height. 1-2. there is a possibility of chip cracking caused by pcb expansion/contraction with heat, because stress on a chip is different depending on pcb material and structure.when the thermal expansion coefficient greatly differs between the board used for mounting and the chip,it will cause cracking of the chip due to the thermal expansion and contraction. when capacitors are mounted on a fluorine resin printed circuit board or on a single-layered glass epoxy board, it may also cause cracking of the chip for the same reason. pattern forms in section in section in section in section in section in section placing of leaded components after chip component lateral mounting notice prohibited correct placing close to chassis placing of chip components and leaded components jemcgc-05049f 23 chassis solder (ground) electrode pattern solder resist lead wire solder resist lead wire soldering iron solder resist ????????? solder resist 2. land dimensions please confirm the suitable land dimension by evaluating of the actual set / pcb. table 1 flow soldering method flow soldering can only be used for products with a chip size of 1.6x0.8mm to 3.2x1.6mm. (in mm) resistance to pcb bending stress may be improved by designing the a dimension with solder resist. table 2 reflow soldering method (in mm) 3. board design when designing the board, keep in mind that the amount of strain which occurs will increase depending on the sizeand material of the board. 2.item to be confirmed for flow sordering if you want to temporarily attach the capacitor to the board using an adhesive agent before soldering the capacitor, first be sure that the conditions are appropriate for affixing the capacitor. if the dimensions of the land, the type of adhesive,the amount of coating, the contact surface area, the curing temperature, or other conditions are inappropriate, the characteristics of the capacitor may deteriorate. 1. selection of adhesive 1-1. depending on the type of adhesive, there may be a decrease in insulation resistance. in addition, there is a chance that the capacitor might crack from contractile stress due to the difference in the contraction rate of the capacitor and the adhesive. 1-2. if there is not enough adhesive, the contact surface area is too small, or the curing temperature or curing time are inadequate, the adhesive strength will be insufficient and the capacitor may loosen or become disconnected during transportation or soldering. if there is too much adhesive, for example if it overflows onto the land, the result could be soldering defects, loss of electrical connection, insufficient curing, or slippage after the capacitor is mounted. furthermore, if the curing temperature is too high or the curing time is too long, not only will the adhesive strength be reduced, but solderability may also suffer due to the effects of oxidation on the terminations (outer electrodes) of the capacitor and the land surface on the board. (1) selection of adhesive epoxy resins are a typical class of adhesive. to select the proper adhesive, consider the following points. 1) there must be enough adhesive strength to prevent the component from loosening or slipping during the mounting process. 2) the adhesive strength must not decrease when exposed to moisture during soldering. 3) the adhesive must have good coatability and shape retention properties. 4) the adhesive must have a long pot life. 5) the curing time must be short. 6) the adhesive must not be corrosive to the exterior of the capacitor or the board. 7) the adhesive must have good insulation properties. 8) the adhesive must not emit toxic gases or otherwise be harmful to health. 9) the adhesive must be free of halogenated compounds. (2) use the following illustration as a guide to the amount of adhesive to apply. chip dimension (l/w) code:18/21/31 notice jemcgc-05049f 25 relationship with amount of strain to the board thickness, length, width, etc.] = 3pl 2 e wh 2 relationship between load and strain when the load is constant, the following relationship can be established. as the distance between the supporting points (l) incre ases,the amount of strain also increases. reduce the distance between the supporting points. as the elastic modulus (e) decreases, the amount of strain increases. increase the elastic modulus. as the board width (w) decreases, the amount of strain increases. increase the width of the board. as the board thickness (h) decreases, the amount of strain increases. increase the thickness of the board. since the board thickness is squared, the effect on the amount of strain becomes even greater. strain on center of board ( st) l distance between supporting points (mm) w board width (mm) h board thickness (mm) e elastic modulus of board (n/m 2 =pa) y deflection (mm) p load (n) y p h w l land resist adhesive cross sectional view resist side view 2.flux 2-1. an excessive amount of flux generates a large quantity of flux gas, which can cause a deterioration of solderability, so apply flux thinly and evenly throughout. (a foaming system is generally used for flow solderring.) 2-2. flux containing too high a percentage of halide may cause corrosion of the terminations unless there is sufficient cleaning. use flux with a halide content of 0.1% max. 2-3. strong acidic flux can corrode the capacitor and degrade its performance. please check the quality of capacitor after mounting. 3.leaching of the terminations set temperature and time to ensure that leaching of the terminations does not exceed 25% of the chip end area as a single chip (full length of the edge a-b-c-d shown at right) and 25% of the length a-b shown as mounted on substrate. 3.reflow soldering the flux in the solder paste contains halogen-based substances and organic acids as activators. strong acidic flux can corrode the capacitor and degrade its performance. please check the quality of capacitor after mounting. 4.washing 1. please evaluate the capacitor using actual cleaning equipment and conditions to confirm the quality, and select the solvent for cleaning. 2. unsuitable cleaning may leave residual flux or other foreign substances, causing deterioration of electrical characteristics and the reliability of the capacitors. 5.coating 1. a crack may be caused in the capacitor due to the stress of the thermal contraction of the resin during curing process. the stress is affected by the amount of resin and curing contraction. select a resin with low curing contraction. the difference in the thermal expansion coefficient between a coating resin or a molding resin and the capacitor may cause the destruction and deterioration of the capacitor such as a crack or peeling, and lead to the deterioration of insulation resistance or dielectric breakdown. select a resin for which the thermal expansion coefficient is as close to that of the capacitor as possible. a silicone resin can be used as an under-coating to buffer against the stress. 2. select a resin that is less hygroscopic. using hygroscopic resins under high humidity conditions may cause the deterioration of the insulation resistance of a capacitor. an epoxy resin can be used as a less hygroscopic resin. 3 the halogen system substance and organic acid are included in coating material, and a chip corrodes by the kind of coating material. do not use strong acid type. notice a b d c termination as a single chip as mounted on substrate a b jemcgc-05049f 26 others 1.transportation 1. the performance of a capacitor may be affected by the conditions during transportation. 1-1. the capacitors shall be protected against excessive temperature, humidity and mechanical force during transportation. (1) climatic condition ? low air temperature : -40 ? change of temperature air/air : -25 /+25 ? low air pressure : 30 kpa ? change of air pressure : 6 kpa/min. (2) mechanical condition transportation shall be done in such a way that the boxes are not deformed and forces are not directly passed on to the inner packaging. 1-2. do not apply excessive vibration, shock, or pressure to the capacitor. (1) when excessive mechanical shock or pressure is applied to a capacitor, chipping or cracking may occur in the ceramic body of the capacitor. (2) when the sharp edge of an air driver, a soldering iron, tweezers, a chassis, etc. impacts strongly on the surface of the capacitor, the capacitor may crack and short-circuit. 1-3. do not use a capacitor to which excessive shock was applied by dropping etc. a capacitor dropped accidentally during processing may be damaged. 2.characteristics evaluation in the actual system 1. evaluate the capacitor in the actual system,to confirm that there is no problem with the performance and specification values in a finished product before using. 2. since a voltage dependency and temperature dependency exists in the capacitance of high dielectric type ceramic capacitors, the capacitance may change depending on the operating conditions in the actual system. therefore,be sure to evaluate the various characteristics, such as the leakage current and noise absorptivity, which will affect the capacitance value of the capacitor. 3. in addition,voltages exceeding the predetermined surge may be applied to the capacitor by the inductance in the actual system. evaluate the surge resistance in the actual system as required. notice jemcgc-05049f 27 note 1.please make sure that your product has been evaluated in view of your specifications with our product being mounted to your product. 2.your are requested not to use our product deviating from this product specification. 3.we consider it not appropriate to include any terms and conditions with regard to the business transaction in the product specifications, drawings or other technical documents. therefore, if your technical documents as above include such terms and conditions such as warranty clause, product liability clause, or intellectual property infringement liability clause, they will be deemed to be invalid. ! jemcgc-05049f 28 |
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