cmb 0207 www.vishay.com vishay beyschlag revision: 16-may-13 1 document number: 28755 for technical questions, contact: melf@vishay.com this document is subject to change without notice. the products described herein and this document are subject to specific disclaimers, set forth at www.vishay.com/doc?91000 high pulse load, high voltage (up to 0.5 kv) carbon film melf resistors cmb 0207 specialty melf resistors with advanced pulse load capability are the perfect choice for the protection of circuitry with signal and mains input lines from surge pulses. the resistors are also suitable for circuits exposed to high levels of electromagnetic interference or electro-static discharge. the applications are in all fields of automotive, telecommunication, industri al and medical equipment. features ? approved to the safety requirements of iec 60065, 14.1.a* (= vde 0860, 14.1.a) vde-reg.-nr. b583 ? aec-q200 qualified ? special carbon film technology ? up to 10 kv or 17 kw single pulse capability ? esd capability: 16 kv, human body model ? material categorization: for definitions of compliance please see www.vishay.com/doc?99912 applications ? automotive ? telecommunication ? industrial ? medical equipment notes ? these resistors do not feature a limited lifetime when operated within the permissible limits. however, resistance value drift increasing over operating time may result in exceeding a limit acceptable to the specific application, thereby establishing a functional lifeti me. (1) the power dissipation on the resistor generates a temperature ri se against the local ambient, de pending on the heatflow support of the printed-circuit board (thermal resistance). the rated dissipation applies only if the 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 alloys or board materials may be required to mainta in the reliability of the assembly. (2) specified power rating requir es dedicated heat-sink pads. reg.-nr. b583 metric size din 0207 cecc rc 6123m technical specifications description cmb 0207 cecc size rc 6123m resistance range 2.2 ? to 1.5 m ? resistance tolerance 5 %; 2 %; 1 % temperature coefficient see tcr graph operation mode standard power climatic category (lct/u ct/days) 55/125/56 55/155/56 rated dissipation, p 70 (1) 0.4 w 1.0 w (2) operating voltage, u max. ac/dc 500 v film temperature 125 c 155 c max. resistance change at p 70 for resistance range, ? r / r after: 2.2 ? to 10 k ? 1000 h ? 0.5 % ?? 1 % 8000 h ? 1 % ?? 2 % 225 000 h t.b.f - permissible voltage against ambient (insulation): 1 min; u ins 750 v continuous 75 v failure rate: fit observed ?? 0.1 x 10 -9 /h
cmb 0207 www.vishay.com vishay beyschlag revision: 16-may-13 2 document number: 28755 for technical questions, contact: melf@vishay.com this document is subject to change without notice. the products described herein and this document are subject to specific disclaimers, set forth at www.vishay.com/doc?91000 dimensions note ? color code marking is a pplied according to iec 60062 (3) in four bands. each color band appears as a single solid line, voids are permissible if at least 2 / 3 of the band is visible from each radial angle of view. the la st color band for tolerance is approximately 50 % wider than the other bands. an interrupte d brown band between the 2 nd and 3 rd full band indicates the special carbon film type. pattern styles for melf resistors note ? the given solder pad dimensions reflect the considerations for board design and assembly as outlined e.g. in standards iec 611 88-5-x, or in publication ipc-7351. they do not guarante e any supposed thermal properti es, however, they will be found adequate for most g eneral applications. dimensions and mass type l (mm) d (mm) l 1 min. (mm) d 1 (mm) k (mm) mass (mg) cmb 0207 5.8 + 0/- 0.15 2.2 + 0/- 0.2 3.2 d + 0/- 0.2 1.15 0.1 79 recommended solder pad dimensions type wave soldering reflow soldering g (mm) y (mm) x (mm) z (mm) g (mm) y (mm) x (mm) z (mm) cmb 0207 2.8 2.1 2.6 7.0 3.2 1.7 2.4 6.6 l 1 k d 1 d l g x y z
cmb 0207 www.vishay.com vishay beyschlag revision: 16-may-13 3 document number: 28755 for technical questions, contact: melf@vishay.com this document is subject to change without notice. the products described herein and this document are subject to specific disclaimers, set forth at www.vishay.com/doc?91000 note ? products can be ordered using either the part number or the product description. note (1) please select resistance values for 5 % and 2 % tolerance from the e24 series. part number and product description part number: cmb02070x4701gb200 model/size version tcr value tolerance packaging special cmb0207 0 = neutral x = no indication 3 digit value 1 digit multiplier multiplier 8 = *10 -2 9 = *10 -1 0 = *10 0 1 = *10 1 2 = *10 2 3 = *10 3 4 = *10 4 j = 5 % g = 2 % f = 1 % b2 b7 up to 2 digits 00 = standard product description: cmb 0207 2 % b2 4k7 cmb 0207 2 % b2 4k7 model size tolerance packaging resistance value cmb 0207 5 % 2 % 1 % b2 b7 100r = 100 ? 4k7 = 4.7 k ? packaging model blister tape on reel acc. iec 60286-3, type ii diameter quantity code cmb 0207 180 mm/7" 2000 b2 330 mm/13" 7000 b7 tolerance and resistance range description resistance value (1) tolerance cmb 0207 5 % 2.2 ? to 15 ? 2 % 16 ? to 1.5 m ? 1 % 16 ? to 1 m ? cmb 02070x4701gb2 00
cmb 0207 www.vishay.com vishay beyschlag revision: 16-may-13 4 document number: 28755 for technical questions, contact: melf@vishay.com this document is subject to change without notice. the products described herein and this document are subject to specific disclaimers, set forth at www.vishay.com/doc?91000 description production of the cmb 0207 specialty melf resistor is strictly controlled and follows an extensive set of instructions established for reproducibility. a homogeneous and dense carbon film is deposi ted on a high grade ceramic body (al 2 o 3 ). nickel plated steel te rmination caps are firmly pressed on the coated rods. products with a resistance of 15 ? or lower are made without trimming, whereas a special laser is used to achieve a target value of 16 ? or above by smoothly cutting a helical groove in the resistive layer without damaging the ceramics. the resistor elements are covered by a protective coatin g designed for electrical, mechanical and climatic protection. the terminations receive a final pure tin on nickel plating. four color code rings designate the resistan ce value and tolerance in accordance with iec 60062 (3) . 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 60286-3 (3) . assembly the resistors are suitable for processing on automatic smd assembly systems. they are su itable for automatic soldering using wave, reflow or vapour phase as shown in iec 61760-1 (3) . solderability is specified for 2 years after production or requalification, however, excellent solderability is proven after extended storage in excess of 10 years. the permitted storage time is 20 years. the resistors are completely l ead (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. the encapsulation is resistant to all cleaning solvents commonly used in the electronics industry, including alcohols, esters and aqueous solutions. the suitability of conformal coatings, if applied, shall be qualified by appropriate means to ensure the long-term stability of the whole system. 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) solderability is specified for 2 years after production or requalification. the permitte d storage time is 20 years. approvals where applicable the resistors are tested in accordance with en 140 401-803 which refers to en 60115-1, en 140 400 and the variety of environmental test procedures of the iec 60068 (3) 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 manufa cturing process. related products ? professional melf resistors ? ( www.vishay.com/doc?28713 ) ? precision melf resistors ? ( www.vishay.com/doc?28714 ) ? high pulse load carbon film melf resistors ? ( www.vishay.com/doc?28717 ) notes (1) global automotive declarable substance list, see www.gadsl.org . (2) cefic (european chemical industry council), eeca (european electr onic component manufacturers as sociation), eict a (european tra de organisation representing the information and communications technology and consumer electronics), see www.eicta.org/index.php?id=995 ? issues ? environment policy ? chemicals ? chemicals for electronics. (3) the quoted iec standards are also released as en st andards with the same number and identical contents.
cmb 0207 www.vishay.com vishay beyschlag revision: 16-may-13 5 document number: 28755 for technical questions, contact: melf@vishay.com this document is subject to change without notice. the products described herein and this document are subject to specific disclaimers, set forth at www.vishay.com/doc?91000 functional performance c 100 150 - 50 0 50 70 derating ambient te mperature amb ? 0 0.5 1 w power dissipation p po w er operation mode (1) standard operation mode note (1) specified po w er rating re qu ires dedicated heat sink pads 1.2/50 pulse resistance value r 1 10 100 1k 10k 100k 1m 10 100 1k 10k v cmb 0207 pulse voltage u 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 % 10/700 pulse resistance value r 1 10 100 1k 10k 100k 1m 10 100 1k 10k v cmb 0207 pulse voltage ? 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 %
cmb 0207 www.vishay.com vishay beyschlag revision: 16-may-13 6 document number: 28755 for technical questions, contact: melf@vishay.com this document is subject to change without notice. the products described herein and this document are subject to specific disclaimers, set forth at www.vishay.com/doc?91000 historical 12nc information ? the resistors had a 12-digit numeric code starting with 2312. ? the subsequent 4 digits indicated th e resistor type, specification and packaging; see the 12nc table. ? the remaining 4 digits indicated the resistance value: -the first 3 digits indicated th e resistance value. - the last digit indicated the resistance decade in accordance with the 12nc indicating resistance decade table. last digit of 12nc indi cating resistance decade historical 12nc example the 12nc of a cmb 0207 resistor, value 47 k ? with 2 % tolerance, supplied in blister tape of 2000 units per reel was: 2312 199 24703. temperature coefficent (tcr) (typical curve) resistance value r 1 10 100 1k 10k 100k 1m - 500 - 400 - 300 - 200 - 100 0 ppm/k cmb 0207 temperature coefficient alue r current noise a 1 0.01 100 0. 1 1 v/ v resistance v current noise - a 1 in accordance w ith iec 60195 1k 10k 100k 1m cmb 0207 resistance decade last digit 1 ?? to 9.99 ?? 8 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 1 m ? to 9.99 m ? 5 historical 12nc - resistor type and packaging description code 2312 ... ..... blister tape on reel type tol. b2 2000 units b7 7000 units cmb 0207 5 % 199 3.... 189 3.... 2 % 199 2.... 189 2.... 1 % 199 1.... 189 1....
legal disclaimer notice www.vishay.com vishay revision: 02-oct-12 1 document number: 91000 disclaimer all product, product specifications and data are subject to change without notice to improve reliability, function or design or otherwise. vishay intertechnology, inc., its affiliates, agents, and employee s, and all persons acting on it s or their behalf (collectivel y, vishay), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any o ther disclosure relating to any product. vishay makes no warranty, repres entation or guarantee regarding the suitabilit y of the products for any particular purpose or the continuing production of any product. to the maximum extent permitted by applicable law, vi shay disclaims (i) any and all liability arising out of the application or use of any product, (ii) any and all liability, including without limitation specia l, consequential or incidental damages, and (iii) any and all i mplied warranties, including warra nties of fitness for particular purpose, non-infringement and merchantability. statements regarding the suitability of products for certain type s of applications are based on vishays knowledge of typical requirements that are often placed on vishay products in generic applications. such statements are not binding statements about the suitability of products for a particular application. it is the customers responsib ility to validate that a particu lar product with the properties descri bed in the product specification is suitable fo r use in a particular application. parameters provided in datasheets and/or specification s may vary in different applications an d performance may vary over time. all operating parameters, including typical pa rameters, must be validated for each customer application by the customers technical experts. product specifications do not expand or otherwise modify vish ays terms and condit ions of purchase, including but not limited to the warranty expressed therein. except as expressly indicate d in writing, vishay products are not designed for use in medical, life-saving, or life-sustaining applications or for any other application in which the failure of the vi shay product could result in personal injury or death. customers using or selling vishay products not expressly indicated for use in such applications do so at their own risk. pleas e contact authorized vishay personnel to ob tain written terms and conditions regarding products designed for such applications. no license, express or implied, by estoppel or otherwise, to any intellectual prope rty rights is granted by this document or by any conduct of vishay. product names and markings noted herein may be trad emarks of their respective owners. material category policy vishay intertechnology, inc. hereby certi fies that all its products that are id entified as rohs-compliant fulfill the definitions and restrictions defined under directive 2011/65/eu of the euro pean parliament and of the council of june 8, 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment (eee) - recast, unless otherwis e specified as non-compliant. please note that some vishay documentation may still make reference to rohs directive 2002/95/ ec. we confirm that all the products identified as being compliant to directive 2002 /95/ec conform to directive 2011/65/eu. vishay intertechnology, inc. hereby certifi es that all its products that are identified as ha logen-free follow halogen-free requirements as per jedec js709a stan dards. please note that some vishay documentation may still make reference to the iec 61249-2-21 definition. we co nfirm that all the products identified as being compliant to iec 61249-2-21 conform to jedec js709a standards.
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