specification for approval document : srk270000nh revision : a1 page : 1 of 9 1/6w, 0402, low resistance chip resistor (lead / ha logen free) 1. scope this specification applies to1.0mm x 0.5mm size 1/6 w, fixed thick film low resistance value chip resistors rectangular type. 2. type designation rlt0510 - 7 - (1) (2) (3) (4) where (1) size no . (2) power rating: 7 = 1/6w (3) resistance value: for example -- r075 = 0.075 w r100 = 0.100 w the r shall be used as a decimal point (4) resistance tolerance: f = 1.0%, g= 2%, j= 5% 3. outline dimensions l w a a t b code letter dimension l 1.00 0.10 w 0.50 0.10 t 0.35 +0.15/-0.10 a 0.25 0.10 b 0.30 0.10 unit : mm
specification for approval document : srk270000nh revision : a1 page : 2 of 9 4. ratings 4-1 specification table 1 power rating* 1/6w resistance tolerance 1%(f), 2%(g), 5%(j) resistance range 0.065 ~ <0.60 0.60 ~ 1.0 temperature coefficient of resistance(ppm/ ) 300 200 operating temperature range -55 to 125 note*: power rating is based on continuous full loa d operation at rated ambient temperature of 70 . for resistor operated at ambient temperature in excess of 70 ,the maximum load shall be derated in accordance with the foll owing curve. 4-2 rated voltage the d.c. or a.c. r.m.s. voltage shall be calc ulated from the following expression r p v = where v : rated voltage (v) p : rated power (w) r : nominal resistance ( w ) 4-3 operating and storage temperature range -55 to +125 rated load(%) ambient temperature( ) 0 -55 70 125 100
specification for approval document : srk270000nh revision : a1 page : 3 of 9 5. characteristics 5-1 electrical item specification and requirement test method (jis 5201) temperature coefficient of resistance (tcr) as follow table 1. room temperature room temperature+100 short time overload r:1.0% without damage by flashover, spark, arcing, burning or breakdown (1) applied voltage: 2.5 x rated voltage (2) test time: 5 seconds insulation resistance over 100 m w on overcoat layer face up over 1,000 m w on substrate side face up (1) setup as figure 1 (2) test voltage: 100v dc 15v dc (3) test time: 60 + 10 / - 0 seconds voltage proof resistance range:1.0% without damage by flashover, spark, arcing, burning or breakdown (1) setup as figure 1 (2) test voltage: 100v ac (rms.) (3) test time: 60 + 10 / - 0 seconds insulation plate spring sample electrode metal block measurement point b pressure rod (metal) measurement point a substrate over coat film figure 1 : measurment setup (r=0.5 mm) a b voltage supply substrate side
specification for approval document : srk270000nh revision : a1 page : 4 of 9 5-2 mechanical item specification and requirement test method (jis 5201) solderability the surface of terminal immersed shall be minimum of 95% covered with a new coating of solder solder bath: after immersing in flux, dip in 245 5 molten solder bath for 2 0.5 seconds resistance to solder heat r: 1.0% without distinct deformation in appearance (1) pre-heat: 100~110 for 30 seconds (2) immersed at solder bath of 270 5 for 10 1 seconds (3) measuring resistance 1 hour after test bending test r: 1.0% without mechanical damage such as break bending value: 3 mm for 30 1 seconds
specification for approval document : srk270000nh revision : a1 page : 5 of 9 5-3 endurance item specification and requirement test method (jis 5201) rapid change of temperature r:1.0% without distinct damage in appearance (1) repeat 5 cycle as follow: (-55 3 ,30minutes) ? (room temperature, 2~3 minutes) ? (+125 2 ,30minutes) ? (room temperature 2~3 minutes) (2) measuring resistance 1 hour after test moisture with load r: 5.0% without distinct damage in appearance (1) environment condition: 4 0 2 ,90~95% rh (2) applied voltage: rated voltage (3) test period: (1.5 hour on) ? (0.5 hour off) cycled for total 1,000 + 48 / - 0 hours (4) measuring resistance 1 hour after test load life r: 5.0% without distinct damage in appearance (1) test temperature: 70 3 (2) applied voltage: rated voltage (3) test period: (1.5 hour on) ? (0.5 hour off) cycled for total 1,000 + 48 / - 0 hours (4) measuring resistance 1 hour after test low temperature store r: 5.0% without distinct damage in appearance (1) store temperature: -55 3 for total 1,000 + 48 / - 0 hours (2) measuring resistance 1 hour after test high temperature store r: 5.0% without distinct damage in appearance (1) store temperature: +125 2 for total 1,000 + 48 / - 0 hours (2) measuring resistance 1 hour after test
specification for approval document : srk270000nh revision : a1 page : 6 of 9 6. recommend land pattern dimensions a 0.6~1.0 b 2.0~2.4 c 0.6~1.0 unit : mm c a b
specification for approval document : srk270000nh revision : a1 page : 7 of 9 7. packaging 7-1 dimensions 7-1-1 tape packaging dimensions remark: leader tape length R 30 cm( 150 hollow carrier cavity) 7-1-2 reel dimensions 2.0 13.0 0 . 2 20min. 9.0 0.3 unit : mm 180+0/-3 60.0 +0/ - 1 56.0 1 13 1. 4 4.00.1 0. 48 0.1 d=3.50.05 c=1.750.1 chip 0. 42 0. 05 b a 4.00.1 8.00.3 d c carrier cavit y pulling direction unit : mm sprocket hole 2.00.05 a= 0.68 0. 05 b= 1.18 0 . 0 5 1.5 0.1
specification for approval document : srk270000nh revision : a1 page : 8 of 9 7-2 peel force of top cover tape the peel speed shall be about 300 mm/min. the peel force of top cover tape shall be between 0 .1 to 0.7 n. 7-3 numbers of taping 10,000 pieces /reel 7-4 label making the following items shall be marked on the reel. (1) type designation. (2) quantity (3) manufacturing date code (4) manufacturers name 165 ~ 180 top cover tape 0.1~0.7 n
specification for approval document : srk270000nh revision : a1 page : 9 of 9 8. carenote 8-1 care note for storage (1) chip resistor shall be stored in a room where tempe rature and humidity must be controlled. (temperature 5 to 35 , humidity 45 to 85% rh) however, a humidity keep i t low, as it is possible. (2) chip resistor shall be stored as direct sunshine do esnt hit on it. (3) chip resistor shall be stored with no moisture, dus t, a material that will make solderability inferior, and a harmful gas (chloridation hydrogen, sulfurous acid gas, and sulfuration hydrogen) 8-2 carenote for operating and handling (1) it is necessary to protect the edge and protection coat of resistors from mechanical stress. (2) handle with care when printing circuit board (pcb) is divided or fixed on support body, because bending of printing circuit board (pcb) mou nting will make mechanical stress for resistors. (3) resistors shall be used with in rated range shown i n specification. especially, if voltage more than specified value will be loaded to resistor, th ere is a case it will make damage for machine because of temperature rise depending on generating of heat, and increase resistance value or breaks. (4) in case that resistor is loaded a rated voltage, it is necessary to confirms temperature of a resistor and to reduce a load power according to lo ad reduction curve, because a temperature rise of a resistor depends on influence of heat fro m mounting density and neighboring element. (5) observe limiting element voltage and maximum overlo ad voltage specified in each specification (6) if there is possibility that a large voltage (pulse voltage, shock voltage) charge to resistor, it is necessary that operating condition shall be set up before use.
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