high pulse load melf resistor cma 0204 vishay beyschlag www.vishay.com for technical questions contact: ff3bresistors@vishay.com document number: 28717 58 revision: 18-jul-06 features ? special carbon film technology ? up to 4 kv single pulse capability ? up to 70 w continuous pulse load ? esd capability: 6 kv, human body model ? compatible with lead (pb)-free and lead containing soldering processes ? lead (pb)-free and rohs compliant applications ? automotive ? telecommunication ? industrial ? medical equipment metric sizes din: 0204 cecc: rc 3715m cma 0204 speciality melf resistors with advanced pulse load capability are the perfect choice for the protection of circuitry with signal or mains input lines from surge pulses. the resistors are also suitable for circuits exposed to high levels of electromagnetic interference or electrostatic discharge. the applications are in all fields of automotive, telecommunication, industrial and medical equipment. note: these resistors do not feature a limited life time when operated within the permissible limits. however, resistance value drift increasing over operating time may result in exceeding a limit acceptable to the spec ific application, thereby es tablishing a functional lifeti me. 1) the power dissipation on the resistor generates a temperature rise against the local ambient, depending on the heatflow support of the printed-circuit board (thermal resistance). the rated dissipation applies only if t he permitted film temperature is not exceede d. furthermore, a high level of ambient temperature or of power dissipation may raise the temperature of the solder joint, hence special solder a lloys or board materials may be required to maintain the reliability of the assembly. 2) film temperatures above the specified range may be permiss ible, e.g. 175 c. please contact the factory for details. technical specifications description cma 0204 metric cecc size rc 3715m resistance range 10 to 100 k resistance tolerance 2 % temperature coefficient see tcr graph operation mode standard power climatic category (lct/uct/days) 55/125/56 55/155/56 rated dissipation, p 70 1) 0.25 w 0.4 w operating voltage, u max ac/dc 200 v film temperature 2) 125 c 155 c max. resistance change at p 70 for resistance range, 10 to 100 k | r / r | after: 1000 h 1 % 2 % 8000 h 2 % 4 % permissible voltage against ambient (insulation): 1 minute; u ins 300 v continuous 75 v failure rate 1 10 -9 /h
cma 0204 high pulse load melf resistor vishay beyschlag document number: 28717 for technical ques tions contact: ff3br esistors@vishay.com www.vishay.com revision: 18-jul-06 59 12nc information ? the resistors have a 12-digit numeric code starting with 2312. ? the subsequent 4 digits indicate the resistor type, specification and packaging; see the 12nc table. ? the remaining 4 digits indicate the resistance value: ? the first 3 digits indicate the resistance value. ? the last digit indicates the resistance decade in accordance with the 12nc indicating resistance decade table. last digit of 12nc indicating resistance decade 12nc example the 12nc of a cma 0204 resistor, value 47 k with 2 % tolerance, supplied in blister tape of 3000 units per reel is: 2312 159 24703. notes 1. products can be ordered using either the product description or the 12nc. 2. the part number is shown to facilitate the introduction of the unified part numbering system. cu rrently, this part number is applicable in the americas and in asia/pacific only. 3. please refer to table packaging, see below. 4. for cma0204 the temperature coefficient is not identified in the product description. resistance decade last digit 10 to 99.9 9 100 to 999 1 1 k to 9.99 k 2 10 k to 99.9 k 3 100 k to 999 k 4 12nc - resistor type and packaging description ordering code 2312 ... ..... blister tape on reel type tol. bl b0 cma 0204 2 % 159 2.... 149 2.... part number and product description 1) part number 2) : cma02040x4701gb300 cma02040x4701gb300 model/size special character tc value tolerance pac k ag i n g 3) special cma0204 0 = neutral x = no indication 3 digit value 1 digit multiplier multiplier 9 = *10 -1 0 = *10 0 1 = *10 1 2 = *10 2 3 = *10 3 g = 2 % b3 b0 up to 2 digits 00 = standard product description 4) : cma 0204 2 % bl 4k7 cma 0204 2 % bl 4k7 model size tolerance packaging 3) resistance value cma 0204 2 % bl b0 100r = 100 4k7 = 4.7 k
cma 0204 vishay beyschlag high pulse load melf resistor www.vishay.com for technical questions contact: ff3bresistors@vishay.com document number: 28717 60 revision: 18-jul-06 dimensions color code marking is applied according to iec 60062* in four bands (e24 series). each color band appears as a single solid lin e, voids are permissible if at least 1/3 of the band is visible from each radial angle of view. the last color band for tolerance is approx, 50 % wider than the other bands. an interrupted band between the 2nd and 3rd full band identifies the special carbon film type. 1) resistance value to be selected from e24 series. packaging model blister tape on reel acc. iec 60286-3 diameter pieces/reel code cma0204 180 mm/7? 3000 b3 = bl 330 mm/13? 10 000 b0 dimensions - melf resistor types, mass an d relevant physical dimensions type l (mm) d (mm) l 1 min (mm) d 1 (mm) k (mm) mass (mg) cma 0204 3.6 + 0/- 0.2 1.4 + 0/- 0.1 1.8 d + 0/- 0.15 0.8 0.1 19 tolerance and resistance range tolerance resistance value 1) cma 0204 2 % 10 to 100 k l d l 1 k d 1 color code marking 1)
cma 0204 high pulse load melf resistor vishay beyschlag document number: 28717 for technical ques tions contact: ff3br esistors@vishay.com www.vishay.com revision: 18-jul-06 61 description production of the cma 0204 s peciality melf resistors with advanced pulse load capability is strictly controlled and follows an extensive set of instructions established for reproducibility. a homogeneous and dense carbon film is deposited on a high grade ceramic body (85 % al 2 o 3 ). nickel plated steel termination caps are firmly pressed on the coated rods. a special laser is used to achieve the target value by smoothly cutting a helical groove in the resistive layer without damaging the ceramics. the resistors are covered by protective coating designed for electrical, mechanical and climatic protection.the terminations receive a final pure tin on nickel plating. four color code rings designate the resistance value and tolerance in accordance with iec 60 062 *. the result of the determined production is verified by an extensive testing procedure performed on 100 % of the individual resistors. only accepted products are laid directly into the blister tape in accordance with iec 60 286-3 *. assembly the resistors are suitable for processing on automatic smd assembly systems. they are suitable for automatic soldering using wave, reflow or vapour phase as shown in iec 61760-1 *. excellent solderability is proven, even after extended storage in excess of 10 years. the encapsulation is resistant to all cleaning solvents commonly used in the electronics industry, including alcohols, esters and aqueous solutions. the resistors are completely lead (pb)-free, the pure tin plating provides compatibility with lead (pb)-free soldering processes. the immunity of the plating against tin whisker growth has been proven under extensive testing. all products comply with the gadsl 1) and the cefic- eeca-eicta 2) list of legal restrictions on hazardous substances. this includes full compliance with the following directives: ? 2000/53/ec end of vehicle life directive (elv) and annex ii (elv ii) ? 2002/95/ec restriction of the use of hazardous substances directive (rohs) ? 2002/96/ec waste electrical and electronic equipment directive (weee) 1) global automotive declarable substance list, see www.gadsl.org 2) cefic (european chemical industry council), eeca (european electronic component manufactu rers association), eicta (european trade organisation repr esenting the information and communications technology and consumer elec tronics), see www.eicta.org -> issues -> environment policy -> chemicals -> chemicals for electronics approvals where applicable the resistors are tested in accordance with en 140401-803 (superseding cecc 40401-803 ) which refers to en 60115-1, en 140400 and the variety of enviromental text procedures of the iec 60068 * series. vishay beyschlag has achieved "approval of manufacturer" in accordance with iec qc 001002-3, clause 2 . the release certificate for ?technology approval schedule? in accordance with cecc 240001 based on iec qc 001002-3, clause 6 is granted for the vishay beyschlag manufacturing process. note: * the quoted iec standards are also released as en standards with the same number and identical contents.
cma 0204 vishay beyschlag high pulse load melf resistor www.vishay.com for technical questions contact: ff3bresistors@vishay.com document number: 28717 62 revision: 18-jul-06 functional performance c 100 150 0 - 50 0 50 0.5 1 w 70 ambient temperature amb ? power dissipation p cma 0204 deratin g - standard operation c 100 150 0 - 50 0 50 0.5 1 w 70 ambient temperature amb ? power dissipation p cma 0204 deratin g - power operation 100 s 1 ms 10 ms 1 1 s 10 s 0.1 w 10 s 100 ms 10 100 pulse load p max cma 0204 pulse duration t i sin g le pulse maxim u m p u lse load, single p u lse; applica b le if p 0 and n 1000 and u u max ; for permissi b le resistance change e qu i v alent to 8 000 h operation
cma 0204 high pulse load melf resistor vishay beyschlag document number: 28717 for technical ques tions contact: ff3br esistors@vishay.com www.vishay.com revision: 18-jul-06 63 100 s 1 ms 10 ms 1 1 s 10 s 0.1 w 10 s 100 ms 10 100 pulse duration t i continuous pulse load p max cma 0204 continuous pulses maxim u m p u lse load, contin u o u s p u lses; applica b le if p p ( ? am b ) and u u max ; for permissi b le resistance change e qu i v alent to 8 000 h operation cma 0204 100 v 1 kv pulse volta g e u max 100 s 1 ms 10 ms 1 s 10 s 10 s 100 ms pulse duration t i maxim u m p u lse v oltage, single and contin u o u s p u lses; applica b le if p p max ; for permissi b le resistance change e qu i v alent to 8 000 h operation pulse volta g e 100 1 k 10 k 100 k 10 1 m 100 v 1 kv 10 v resistance value r cma 0204 p u lse load rating in accordance w ith iec 60115-1, 4.27; 1,2 s/50 s; 5 p u lses at 12 s inter v als; for permissi b le resistance change 0.5 % 1.2/50 pulse pulse volta g e u
cma 0204 vishay beyschlag high pulse load melf resistor www.vishay.com for technical questions contact: ff3bresistors@vishay.com document number: 28717 64 revision: 18-jul-06 100 1 k 10 k 100 k 10 1 m 100 v 1 kv 10 v cma 0204 resistance value r p u lse load rating in accordance w ith iec 60115-1, 4.27; 10 s/700 s; 10 p u lses at 1 min u te inter v als; for permissi b le resistance change 0.5 % 10/700 pulse pulse volta g e u - 500 ppm/k - 400 - 300 - 200 - 100 100 1 k 10 k 100 k 10 10 m temperature coefficient 1 m cma 0204 resistance value r temperat u re coefficient of resistance temperature coefficient (tcr) 0.01 0.1 1 v/v 1 m 1 k 10 k 100 100 k current noise a 1 cma 0204 resistance value r in accordance w ith iec 60 195 current noise - a 1
cma 0204 high pulse load melf resistor vishay beyschlag document number: 28717 for technical ques tions contact: ff3br esistors@vishay.com www.vishay.com revision: 18-jul-06 65 tests and requirements essentially all tests are carried out in accordance with the following specifications: en 60115-1, generic specification en 140400, sectional specification en 140401-803, detail specification the test procedures and requ irements table contains the applicable tests selected from the documents listed above. the tests are carried out in accordance with iec 60068* and under standard atmospheric conditions in accordance with iec 60068-1, 5.3*. climatic category lct/uct/56 (rated temperature range: lower ca tegory temperature, upper category temperature; damp heat, long term, 56 days) is valid. unless otherwise specified the following values apply: temperature: 15 c to 35 c relative humidity: 45 % to 75 % air pressure: 86 kpa to 106 kpa (860 mbar to 1060 mbar). the components are mounted for testing on printed-circuit boards in accordance with en 140400, 2.3.3, unless otherwise specified. the requirements stated in the test procedures and requirements table are based on the required tests and permitted limits of en 140401-803. test procedures and requirements en 60115-1 clause iec 60068-2* test method test procedure requirements permissible change ( r ) stability for product types: cma 0204 10 to 100 k 4.5 - resistance - 2 % r 4.8.4.2 - temperature coefficient at 20/- 55/20 c and 20/125/20 c see temperature coefficient graph 4.25.1 - endurance at 70 c: standard operation mode u = u max ; 1.5 h on; 0.5 h off; 70 c; 1000 h (1 % r +0.05 ) 70 c; 8000 h (2 % r +0.05 ) 4.25.1 - endurance at 70 c: power operation mode u = u max ; 1.5 h on; 0.5 h off; 70 c; 1000 h (2 % r +0.05 ) 70 c; 8000 h (4 % r +0.05 ) 4.25.3 - endurance at upper category temperature 125 c; 1000 h (2 % r +0.05 ) 155 c; 1000 h (4 % r +0.05 ) 4.24 78 (cab) damp heat, steady state (40 2) c; 56 days; (93 3) % rh (1 % r +0.1 ) 4.23 climatic sequence: 4.23.2 2 (ba) dry heat uct; 16 h 4.23.3 30 (db) damp heat, cyclic 55 c; 24 h; 90 % rh; 1 cycle 4.23.4 1 (aa) cold lct; 2 h 4.23.5 13 (m) low air pressure 8.5 kpa; 2 h; (25 10) c 4.23.6 30 (db) damp heat, cyclic 55 c; 24 h; 90 % rh; 5 cycles 4.23.7 - d.c. load u = u max ; 1 min. lct = - 55 c; uct = 155 c (1 % r +0.1 ) - 1 (aa) cold - 55 c; 2 h (0.5 % r +0.1 ) p 70 r p 70 r p 70 r
cma 0204 vishay beyschlag high pulse load melf resistor www.vishay.com for technical questions contact: ff3bresistors@vishay.com document number: 28717 66 revision: 18-jul-06 note: * the quoted iec standards are also released as en st andards with the same number and identical contents. 4.19 14 (na) rapid change of temperature 30 minutes at - 55 c; 30 minutes at + 125 c; 5 cycles (0.5 % r +0.1 ) 4.13 - short time overload; standard operation mode u = 2.5 2 u max ; 5 s (0.25 % r +0.1 ) short time overload; power operation mode u = 2.5 2 u max ; 5 s (0.25 % r +0.1 ) 4.40 - electrostatic discharge (human body model) iec 61340-3-1*; 3 pos. + 3 neg. discharges cma 0204: 6 kv (0.5 % r + 50 m ) 4.29 45 (xa) component solvent resistance isoprop yl alcohol; 50 c; method 2 no visible damage 4.30 45 (xa) solvent resistance of marking isopropyl alcohol; 50 c; method 1, toothbrush marking legible; no visible damage 4.17.2 58 (td) solderability solder bath method; snpb40; non-activated flux; (215 3) c; (3 0.3) s good tinning ( 95 % covered); no visible damage solder bath method; snag3cu0.5 or snag3.5; non-activated flux; (235 3) c; (2 0.2) s good tinning ( 95 % covered); no visible damage 4.18.2 58 (td) resistance to soldering heat solder bath method ; (260 5) c; (10 1) s (0.5 % r +0.1 ) 4.32 21 (ue 3 ) shear (adhesion) 45 n no visible damage 4.7 - voltage proof u rms = u ins ; 60 s no flashover or breakdown 4.35 - flammability iec 60 695-11-5*, needle flame test; 10 no burning after 30 s revision history compared to the prior revision of this datasheet, 27-feb-04, the following changes have been applied: ? introduction of a standardized part numbering system ? additional emphasis on the clean balance of material s and on the compliance with various eu directives ? revision of the current noise diagram based on new test results ? introduction of a test and requirem ents for electrostatic discharge (esd) ? no other change of technical contents ? no product change test procedures and requirements en 60115-1 clause iec 60068-2* test method test procedure requirements permissible change ( r ) stability for product types: cma 0204 10 to 100 k p 70 r p 70 r
document number: 91000 www.vishay.com revision: 18-jul-08 1 disclaimer legal disclaimer notice vishay all product specifications and data are subject to change without notice. vishay intertechnology, inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, ?vishay?), disclaim any and all liability fo r any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. vishay disclaims any and all li ability arising out of the use or application of any product describ ed herein or of any information provided herein to the maximum extent permit ted by law. the product specifications do not expand or otherwise modify vishay?s terms and conditions of purcha se, including but not limited to the warranty expressed therein, which apply to these products. no license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of vishay. the products shown herein are not designed for use in medi cal, life-saving, or life-sustaining applications unless otherwise expressly indicated. customers using or selling vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify vishay for any damages arising or resulting from such use or sale. please contact authorized vishay personnel to obtain written terms and conditions regarding products designed for such applications. product names and markings noted herein may be trademarks of their respective owners.
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