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ceramic transient voltage suppressors smd multilayer varistor, e series series/type: ct1206k40g ordering code: B72520E0400K062 date: 2012-08-29 version: 2 ? epcos ag 2012. reproduction, publication and dissemination of this publication, enclosures hereto and the information contained therein without epcos' prior express consent is prohibited. content of header bars 1 and 2 of data sheet will be automatically entered in headers and footers! please fill in the table and then change the color to "white". this ensures that the table disappears (invisible) for the customer pdf. don't change formatting when entering or pasting text in the table and don't add any cell or line in and to it! identification/classification 1 (header 1 + top left header bar): ceramic transient voltage suppressors identification/classification 2 (header 2 + bottom left header bar): smd multilayer varistor, e series ordering code: (top right header bar) B72520E0400K062 series/type: (top right header bar) ct1206k40g preliminary data (optional): (if necessary) department: ppd ml pd date: 2012-08-29 version: 2 prepared by: dr. mandoky-lovas release signed by: dr. dernovsek release signed qs: hr. schlauer modifications/remarks: new datasheet for e series
ceramic transient voltage suppressors B72520E0400K062 smd multilayer varistor, e series ct1206k40g ppd ml pd 2012-08-29 please read cautions and warnings and page 2 of 14 important notes at the end of this document . description the e series multilayer ceramic varistors has been developed to protect automotive electronic circuits against transient overvoltages, such as electrostatic discharges and surge currents. features ? reliable esd protection up to 30 kv acc. to iec 61000-4-2 ? high energy absorption capability ? low leakage current ? no temperature derating up to 150 c ? high life time robustness ? stable protection level ? rohs-compatible, lead-free ? qualified based on aec-q200 ? pspice simulation models available designation system ct c hip with t hree-layer-termination (ag/ni/sn) 1206 dimensions of the device 12 x 06 (length x width in 1/100 inch) k tolerance of the varistor voltage (10%) 40 maximum rms operating voltage g taped version, cardboard tape, 7" reel (3000 pcs./ reel)
ceramic transient voltage suppressors B72520E0400K062 smd multilayer varistor, e series ct1206k40g ppd ml pd 2012-08-29 please read cautions and warnings and page 3 of 14 important notes at the end of this document . electrical data maximum operating voltage rms voltage v rms = 40 v dc voltage v dc = 56 v varistor voltage (@ 1 ma, 25 c) v v = 61.2 ? 74.8 v maximum clamping voltage (@ 1 a) v clamp,max = 110 v maximum leakage current (@ 56 v, 25 c) i leak,max = 20 a typical leakage current (@ 28 v, 25 c) i leak = <1 a maximum average power dissipation p diss,max = 8 mw maximum surge current (8/20 s) i surge,max = 1 x 100 a maximum energy absorption (2 ms) w max = 500 mj capacitance (@ 1 khz, 1 v, 25 c; typical) c typ = 250 pf response time <0.5 ns operating temperature ?55 ... +150 c storage temperature (mounted parts) ?55 ... +150 c
ceramic transient voltage suppressors B72520E0400K062 smd multilayer varistor, e series ct1206k40g ppd ml pd 2012-08-29 please read cautions and warnings and page 4 of 14 important notes at the end of this document . v/i characteristics derating curves 10 10 10 10 10 10 5 100 5 1000 5 1000 0 3 2 1 0 -1 5 5 5 1x 2 10 10 4 10 5 10 6 2 10 3 10 ??? t r max i a s t max i r
ceramic transient voltage suppressors B72520E0400K062 smd multilayer varistor, e series ct1206k40g ppd ml pd 2012-08-29 please read cautions and warnings and page 5 of 14 important notes at the end of this document . temperature derating the specified ratings for i max , i surge,max and p diss,max are valid up to 150 c. for operation above 150 c we recommend the below derating. dimensional drawing mlv0031-m h w k dimensions in mm case size l w h k 1206 3.2 0.3 1.6 0.20 1.7 max 0.25 ? 0.75 recommended solder pad layout dimensions in mm case size a b c 1206 1.80 1.20 2.10 mlv0034-p a b c
ceramic transient voltage suppressors B72520E0400K062 smd multilayer varistor, e series ct1206k40g ppd ml pd 2012-08-29 please read cautions and warnings and page 6 of 14 important notes at the end of this document . recommended solder ing profiles reflow soldering recommended temperature characteristic for reflow soldering following jedec j-std-020d profile feature sn-pb eutectic assembly pb-free assembly preheat and soak - temperature min - temperature max - time t smin t smax t smin to t smax 100 c 150 c 60 ? 120 s 150 c 200 c 60 ? 180 s average ramp-up rate t smax to t p 3 c/s max. 3 c/s max. liquidous temperature time at liquidous t l t l 183 c 60 ? 150 s 217 c 60 ? 150 s peak package body temperature t p 1) 220 c ? 235 c 2) 245 c ? 260 c 2) time (t p ) 3) within 5 c of specified classification temperature (t c ) 20 s 3) 30 s 3) average ramp-down rate t p to t smax 6 c/s max. 6 c/s max. time 25 c to peak temperature maximum 6 min maximum 8 min 1) tolerance for peak profile temperature (t p ) is defined as a supplier minimum and a user maximum. 2) depending on package thickness. for details please refer to jedec j-std-020d. 3) tolerance for time at peak profile temperature (t p ) is defined as a supplier minimum and a user maximum. note: all temperatures refer to topside of the package, measured on the package body surface. number of reflow cycles: 3
ceramic transient voltage suppressors B72520E0400K062 smd multilayer varistor, e series ct1206k40g ppd ml pd 2012-08-29 please read cautions and warnings and page 7 of 14 important notes at the end of this document . wave soldering temper ature profile temperature characteristic at component terminal with dual-wave soldering ?c 300 250 200 150 100 50 temperature time kke0144-j-e 2 k/s approx. 200 k/s 5 k/s 1st wave 2nd wave 2 k/s 235 ?c ... 260 ?c forced limit curves normal curve 10 s 100 ?c ... 130 ?c s 250 200 150 100 50 0 0 cooling soldering guidelines the usage of mild, non-activated fluxes for soldering is recommended, as well as proper cleaning of the pcb. storage condition ? as far as possible, the components should be soldered within 12 months after delivery from epcos. ? storage temperature: ? 25 up to +45 c. ? relative humidity: <75% annual average, <95% on max. 30 days in a year.
ceramic transient voltage suppressors B72520E0400K062 smd multilayer varistor, e series ct1206k40g ppd ml pd 2012-08-29 please read cautions and warnings and page 8 of 14 important notes at the end of this document . taping and packaging tape and reel packing according to iec 60286-3 tape material: blister kke0053-c-e a section a-a a 0 d p 2 p 0 a 0 p 1 1 d g fe w 0 k t 2 direction of unreeling b 0 t cover tape dimensions and tolerances definition symbol dimension [mm] tolerance [mm] compartment width a 0 1.9 0.2 compartment length b 0 3.5 0.2 compartment height k 0 1.8 max. sprocket hole diameter d 0 1.5 +0.1/-0 compartment hole diameter d 1 1.0 min. sprocket hole pitch p 0 4.0 0.1 1) distance center hole to center compartment p 2 2.0 0.05 pitch of the component compartments p 1 4.0 0.1 tape width w 8.0 0.3 distance edge to center of hole e 1.75 0.1 distance center hole to center compartment f 3.5 0.05 distance compartment to edge g 0.75 min. overall thickness t 2 2.5 max. thickness tape t 0.3 max. 1) ? 0.2 mm over 10 sprocket holes. package: 8-mm tape
ceramic transient voltage suppressors B72520E0400K062 smd multilayer varistor, e series ct1206k40g ppd ml pd 2012-08-29 please read cautions and warnings and page 9 of 14 important notes at the end of this document . packing packing material: plastic reel dimensions packing unit: 3000 pcs./ reel kke0058-i w 1 2 w a 13?.2 direction of unreeling +2 0 ?0 _ 40 min. empty cavities 25 min. empty cavities 300 mm cover tape leader tape end (trailer) dinition symbol dimension [mm] tolerance [mm] reel diameter a 180 +0/-3 reel width (inside) w 1 8.4 +1.5/-0 reel width (outside) w 2 14.4 max.
ceramic transient voltage suppressors B72520E0400K062 smd multilayer varistor, e series ct1206k40g ppd ml pd 2012-08-29 please read cautions and warnings and page 10 of 14 important notes at the end of this document . cautions and warnings general some parts of this publication contain statements abo ut the suitability of our ceramic transient voltage suppressor (ctvs) components (multilayer varistors (mlvs), ceradiodes, esd/emi filters, smd disk varistors (cu types), leaded transient voltage/ rfi suppressors (shcv types)) for certain areas of application, including recommendations about incorporation/design-in of these products into customer applications. the statements are based on our know ledge of typical requirements often made of our ctvs devices in the particular areas. we nevertheless expressly point out that such statements cannot be regarded as binding statements about the suitability of our ctvs components for a particular customer application. as a rule, epcos is either unfamiliar with individual customer applications or less familiar with them than the cust omers themselves. for these reasons, it is always incumbent on the customer to check and decide whether the ctvs devices with the properties described in the product specification are suitable for use in a particular customer application. ? do not use epcos ctvs components for purposes not identified in our specifications, application notes and data books. ? ensure the suitability of a ctvs in particular by testing it for reliability during design-in. always evaluate a ctvs component under worst-case conditions. ? pay special attention to the reliability of ctvs devices intended for use in safety-critical applications (e.g. medical equipment, automot ive, spacecraft, nuclear power plant). design notes ? always connect a ctvs in parallel with the electronic circuit to be protected. ? consider maximum rated power dissipation if a ctvs has insufficient time to cool down between a number of pulses occurring within a specified isolated time period. ensure that electrical characteristics do not degrade. ? consider derating at higher operating temperatures. choose the highest voltage class compatible with derating at higher temperatures. ? surge currents beyond specified values will puncture a ctvs. in extreme cases a ctvs will burst. ? if steep surge current edges are to be expected, make sure your design is as low-inductance as possible. ? in some cases the malfunctioning of passive electronic components or failure before the end of their service life cannot be completely ruled out in the current state of the art, even if they are operated as specified. in applications requiring a very high level of operational safety and especially when the malfunction or failure of a passive electronic component could endanger human life or health (e.g. in accident prevention, life-saving systems, or automotive battery line applications such as clamp 30), ensure by suitable design of the application or other measures (e.g. installation of protective ci rcuitry or redundancy) that no injury or damage is sustained by third parties in the event of such a malfunction or failure. only use ctvs components from the auto series in safety-relevant applications.
ceramic transient voltage suppressors B72520E0400K062 smd multilayer varistor, e series ct1206k40g ppd ml pd 2012-08-29 please read cautions and warnings and page 11 of 14 important notes at the end of this document . ? specified values only apply to ctvs components that have not been subject to prior electrical, mechanical or thermal damage. the use of ctvs devices in line-to-ground applications is therefore not advisable, and it is only allow ed together with safety countermeasures like thermal fuses. storage ? only store ctvs in their original packaging. do not open the package before storage. ? storage conditions in original packaging: temperature ? 25 to +45c, relative humidity 75% annual average, maximum 95%, dew precipitation is inadmissible. ? do not store ctvs devices where they are exposed to heat or direct sunlight. otherwise the packaging material may be deformed or ctvs may stick together, causing problems during mounting. ? avoid contamination of the ctvs surface during storage, handling and processing. ? avoid storing ctvs devices in harmful environments where they are exposed to corrosive gases for example (so x , cl). ? use ctvs as soon as possible after opening factory seals such as polyvinyl-sealed packages. ? solder ctvs components after shipment from epcos within the time specified: o ctvs with ni barrier termination, 12 months o ctvs with agpd termination, 6 months o shcv and cu series, 24 months handling ? do not drop ctvs components and allow them to be chipped. ? do not touch ctvs with your bare hands - gloves are recommended. ? avoid contamination of the ctvs surface during handling. mounting ? when ctvs devices are encapsulated with sealing material or overmolded with plastic material, be sure to observe the precautions in ?mounting instructions?, ?sealing, potting and overmolding?. ? make sure an electrode is not scratched befor e, during or after the mounting process. ? make sure contacts and housings used for assembly with ctvs components are clean before mounting.
ceramic transient voltage suppressors B72520E0400K062 smd multilayer varistor, e series ct1206k40g ppd ml pd 2012-08-29 please read cautions and warnings and page 12 of 14 important notes at the end of this document . ? the surface temperature of an operating ctvs can be higher. ensure that adjacent components are placed at a sufficient distance from a ctvs to allow proper cooling. ? avoid contamination of the ctvs surface during processing. ? multilayer varistors (mlvs) with agpd termi nation are not approved for lead-free soldering. soldering ? complete removal of flux is recommended to avoid surface contamination that can result in an instable and/or high leakage current. ? use resin-type or non-activated flux. ? bear in mind that insufficient preheating may cause ceramic cracks. ? rapid cooling by dipping in solvent is not recommended, otherwise a component may crack. conductive adhesive gluing ? only multilayer varistors (mlvs) with an agpd termination are approved for conductive adhesive gluing. operation ? use ctvs only within the specified operating temperature range. ? use ctvs only within specified voltage and current ranges. ? environmental conditions must not harm a ctvs. only use them in normal atmospheric conditions. reducing the atmosphere (e.g. hydr ogen or nitrogen atmosphere) is prohibited. ? prevent a ctvs from contacting liquids and solvents. make sure that no water enters a ctvs (e.g. through plug terminals). ? avoid dewing and condensation. ? epcos ctvs components are mainly designed for encased applications. under all circumstances avoid exposure to: o direct sunlight o rain or condensation o steam, saline spray o corrosive gases o atmosphere with reduced oxygen content
ceramic transient voltage suppressors B72520E0400K062 smd multilayer varistor, e series ct1206k40g ppd ml pd 2012-08-29 please read cautions and warnings and page 13 of 14 important notes at the end of this document . ? epcos ctvs devices are not suitable for switch ing applications or voltage stabilization where static power dissipation is required. ? multilayer varistors (mlvs) are designed fo r esd protection and transient suppression. ceradiodes are designed for esd protection only , esd/emi filters are designed for esd and emi protection only. this listing does not claim to be complete, but merely reflects the experience of epcos ag.
important notes page 14 of 14 the following applies to all products named in this publication: 1. some parts of this publication contain statements about the suit ability of our products for certain areas of application . these statements are based on our knowledge of typical requirements that are often placed on our products in the areas of application concerned. we nevertheless expressly point out that such statements cannot be regarded as binding statements about the suitabilit y of our products for a partic ular customer application. as a rule, epcos is either unfamiliar with individual customer applications or less familiar with them than the customers themselves. for these reasons, it is always ultimately incumbent on the customer to check and decide whether an epcos product with the properties described in the product specification is suitable for use in a particular customer application. 2. we also point out that in individual cases, a malfunction of electronic components or failure before the end of their usual service life cannot be completely ruled out in the current state of the art, even if they are operated as specified. in customer applications requiring a very high level of operational safety and especially in customer applications in which the malfunction or failure of an electronic component could endanger human life or health (e.g. in accident prevention or life-saving systems), it must therefore be ensured by means of suitable design of the customer application or other action taken by the customer (e.g. installation of protective circuitry or redundancy) that no injury or damage is sustained by third parties in the event of malfunction or failure of an electronic component. 3. the warnings, cautions and product-s pecific notes must be observed. 4. in order to satisfy certain technical requirements, some of the products described in this publication may contain substances subject to restrictions in certain jurisdictions (e.g. because they are classed as hazardous) . useful information on this will be found in our material data sheets on the internet (www.epcos.com/m aterial). should you have any more detailed questions, please contact our sales offices. 5. we constantly strive to improve our products. consequently, the products described in this publication may change from time to time . the same is true of the corresponding product specifications. please check therefore to what extent product descriptions and specifications contained in this publication are still applicable before or when you place an order. we also reserve the right to discontinue production and delivery of products . consequently, we cannot guarantee that all products named in this publication will always be available. the aforementioned does not apply in the case of individual agreements deviating from the foregoing for customer-specific products. 6. unless otherwise agreed in individual contracts, all orders are subject to the current version of the ?general terms of delivery for products and services in the electrical industry? published by the german electrical and electronics industry association (zvei) . 7. the trade names epcos, baoke, alu-x, ceradiode, ceralink, csmp, cssp, ctvs, deltacap, digisimic, dssp, filtercap, formfit, miniblue, minicell, mkd, mkk, mlsc, motorcap, pcc, phasecap, phasecube, phasemod, phicap, siferrit, sifi, sikorel, silvercap, simdad, simic, simid, sineformer, siov, sip5d, sip5k, thermofuse, windcap are trademarks registered or pending in europe and in other countries. further information will be found on the internet at www.epcos.com/trademarks.

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