www.vishay.com for technical questions, contact: ww1resistors@vishay.com document number: 28731 144 revision: 06-oct-11 pac.. series vishay draloric cemented wirewound precision resistors this document is subject to change without notice. the products described herein and this document ar e subject to specific disclaimers, set forth at www.vishay.com/doc?91000 features ? high power dissipation in small volume ? ideal for pulse application ? tcr 100 ppm/k ? maximum permissible hot spot temperature is 275 c ? lead (pb)-free ? tolerance 1 % ? compliant to rohs directive 2002/95/ec the resistor element is a resistive wire which is wound in a single layer on a ceramic rod. metal caps are pressed over the ends of the rod. the ends of the resistance wire and the leads are connected to the caps by welding. tinned copper-clad iron leads with poor heat conductivity are employed permitting the use of relatively short leads to obtain stable mounting without overheating the solder joint. the resistor is coated with a green silicon cement which is not resistant to aggressive fluxes. the coating is non-inflammable, will not drip even at high overloads and is resistant to most commonly used cleaning solvents, in accordance with iec 60068-2-45. notes (1) pac02 wsz: p 25 c = 1.8 w (2) resistance value to be selected for 1 % tolerance from e24 and e96 ? for pulse diagrams see ac..series ( www.vishay.com/doc?28730 ) ** please see document ?please see document ?vishay material category policy?:?: www.vishay.com/doc?99902 standard electrical specifications model power rating p 25 c limiting voltage u max. resistance range (2) tolerance pac01 1 w 0.10 ? to 2.2 k ? 1 % pac02 (1) 2 w 0.10 ? to 3.6 k ? 1 % pac03 3 w 0.10 ? to 4.7 k ? 1 % pac04 4 w 0.10 ? to 8.2 k ? 1 % pac05 5 w 0.10 ? to 10 k ? 1 % pac06 6 w 0.10 ? to 12 k ? 1 % p x r p x r p x r p x r p x r p x r
document number: 28731 for technical questions, contact: ww1resistors@vishay.com www.vishay.com revision: 06-oct-11 145 pac.. series cemented wirewound precision resistors vishay draloric this document is subject to change without notice. the products described herein and this document ar e subject to specific disclaimers, set forth at www.vishay.com/doc?91000 notes (1) special winding on request (2) other dimensions on request (3) see ?part number and product description? (4) see ?packaging table? part number and product description part number: pac300004701fac000 model variant tcr/material value tolerance code pac k ag i n g code special pac 1 0 0 = pac01 pac 2 0 0 = pac02 pac 3 0 0 = pac03 pac 4 0 0 = pac04 pac 5 0 0 = pac05 pac 6 0 0 = pac06 0 = neutral 1 = swi = special winding (1) 2 = rt 3 = dk sp 20 mm 4 = dk lp 33 mm (2) 5 = dk lp 17.8 mm (2) 7 = dk lp 25.4 mm (2) 8 = dk sp 25.4 mm 9 = wsz 6720 c = e/k 22.4 mm (2) z = value overflow (special) 0 = standard ( 100 ppm/k) 3 digit value 1 digit multiplier multiplier 7 = *10 - 3 8 = *10 - 2 9 = *10 - 1 0 = *10 0 1 = *10 1 2 = *10 2 3 = *10 3 4 = *10 4 5 = *10 5 f = 1.0 % (see packaging table) the 3 digits are used for all special part styles. to encode the non standard specifications all special parts of one series are listed in a cross reference table. 000 = standard product description: pac03 4k7 1 % ac pac03 4k7 1 % ac model (3) value (3) tolerance code (3) pac k ag i n g description (4) packaging table model ammo loose blister pieces pack. code pack. desc. pieces pack. code pack. desc. pieces pack. code pack. desc. pac01 1000 a1 a1 pac01 dk/ek 500 lc lc pac01rt 2500 ae ae pac02 500 ac ac pac02 dk/ek 500 lc lc pac02 wsz 1250 bm bm pac03 500 ac ac pac03 dk/ek 500 lc lc pac04 500 ac ac pac04 dk/ek 500 lc lc pac05 500 ac ac pac05 dk/ek 250 lb lb pac06 500 ac ac pac06 dk/ek 250 lb lb 3000 470 0 ac fac 0 1 p 0 0
www.vishay.com for technical questions, contact: ww1resistors@vishay.com document number: 28731 146 revision: 06-oct-11 pac.. series vishay draloric cemented wirewound precision resistors this document is subject to change without notice. the products described herein and this document ar e subject to specific disclaimers, set forth at www.vishay.com/doc?91000 dimensions model dimensions in millimeters (inches) d max. l max. d x max. g weight g per unit pac01 4.3 [0.169] 11 [0.433] 0.8 0.03 [0.031 0.001] 2 63 1 [2.480 0.039] 0.52 pac02 4.8 [0.189] 13 [0.512] 2 63 1 [2.480 0.039] 0.75 pac03 5.5 [0.217] 16.5 [0.650] 3 63 1 [2.480 0.039] 1.10 pac04 7.5 [0.295] 18 [0.709] 3 73 1 [2.874 0.039] 1.90 pac05 7.5 [0.295] 26 [1.024] 3 73 1 [2.874 0.039] 2.60 pac06 7.5 [0.295] 26 [1.024] 3 73 1 [2.874 0.039] 2.60 d l g d x (lacquer) for packaging dimensions see: www.vishay.com/doc?28721
document number: 28731 for technical questions, contact: ww1resistors@vishay.com www.vishay.com revision: 06-oct-11 147 pac.. series cemented wirewound precision resistors vishay draloric this document is subject to change without notice. the products described herein and this document ar e subject to specific disclaimers, set forth at www.vishay.com/doc?91000 note (1) see table dimensions bending forms type ? d ? d max. l h 1 p 1 s max. pac01 0.8 (1) (1) 8 17.8 2 pac02 - pac04 25.4 pac05 - pac06 33.0 type ? d ? d max. lh 1p 1 1 p 2 3 s max. ? b c pac01 0.8 (1) (1) 8 19.8 17.8 2 1.0 0.1 4.5 1 pac02 - pac04 22.0 20.0 27.4 25.4 pac05 - pac06 35.0 33.0 type ? d ? d max. lh 1p 1 1 p 2 3 s max. ? b c pac01 - pac02 0.8 (1) (1) 8 17.8 17.8 2 1.0 0.1 4.5 1 pac02 - pac04 25.4 25.4 pac05 - pac06 33.0 33.0 p h l ? d ? d s kink type s = ek ? d double kink sp = dk sp s ? d p 1 h p 2 c ? b l ? d double kink lp = dk lp s ? d p 1 h p 2 c ? b l
www.vishay.com for technical questions, contact: ww1resistors@vishay.com document number: 28731 148 revision: 06-oct-11 pac.. series vishay draloric cemented wirewound pr ecision resistors this document is subject to change without notice. the products described herein and this document ar e subject to specific disclaimers, set forth at www.vishay.com/doc?91000 notes (1) see table dimensions (2) test over 10 holes - 9 intervals p 0 12.7 x 9 = 114.3 0.5 (3) parallelism, < 0.5 mm (4) thickness of carrier tape: 0.55 mm 0.1 bending forms type ? d ? d max. alfheab l pac02 wsz 0.8 (1) 17 0.5 11 - 12 4.8 0.5 3.6 0.5 5.0 0.5 2.5 5.5 14.5 type pac01 lead ? ? d 0.8 diameter ? d (1) length l (1) pitch of components p 12.7 1.0 pitch of spocket holes (2) p 0 12.7 0.3 distance between hole center and resistor center p 1 3.85 0.7 distance between hole center and lead center p 2 6.35 1.0 lead spacing f 5.0 + 0.6, - 0.1 angle of insertion ? h 1 2 max. width of carrier tape w 18.0 0.5 width of adhesive tape w 0 12.0 0.5 position of holes w 1 9.0 0.5 position of adhesive tape w 2 0.5 max. body to hole center h 19.5 1.0 lead crimp to hole center (3) h 0 16.0 0.5 hole ? d 0 4.0 0.2 thickness of tape (4) t 0.9 max. height for cutting l 1 11 max. height for insertion h 1 32 max. wsz ? d a l e ? d f h i b a solder pad dimensions radial taped = rt 1 max. h 1 t direction of unreelin g p 1 f p 0 d 0 p 2 p h 1 l 1 h h 0 w 0 w 2 w 1 w d l ? d
document number: 28731 for technical questions, contact: ww1resistors@vishay.com www.vishay.com revision: 06-oct-11 149 pac.. series cemented wirewound precision resistors vishay draloric this document is subject to change without notice. the products described herein and this document ar e subject to specific disclaimers, set forth at www.vishay.com/doc?91000 derating performance test permissible change climatic category (lct/uct/days) 55/200/56 climatic sequence iec 60115-1 4.23 ? r = (0.5 % r + 0.05 ? ) damp heat, steady state, iec 60115-1, 4.24 (40 2) c, 56 days, (93 3) % rh ? r = (1.0 % r + 0.05 ? ) endurance at room temperature (116 % p 70 ), 1000 h, iec 60115-1, 4.25.2 ? r = (0.5 % r + 0.05 ? ) storage, uct, iec 60115-1, 4.25.3 1000 h, 200 c, no load ? r = (1.0 % r + 0.05 ? ) resistance to soldering heat, iec 60115-1, 4.18 (260 5) c, (10 1) s ? r = (0.2 % r + 0.05 ? ) robustness of termination, iec 60115-1, 4.16 10n ? r = (0.1 % r + 0.05 ? ) short time overload, iec 60115-1, 4.13 10 x rated power for 5 s ? r = (0.2 % r + 0.05 ? ) 0 20 40 60 8 0 100 50 100 150 200 250 300 ambient temperature in c 0 25 rated power in % maximum dissipation (p max. ) as a function of the ambient temperature (t amb )
www.vishay.com for technical questions, contact: ww1resistors@vishay.com document number: 28731 150 revision: 06-oct-11 pac.. series vishay draloric cemented wirewound pr ecision resistors this document is subject to change without notice. the products described herein and this document ar e subject to specific disclaimers, set forth at www.vishay.com/doc?91000 historical 12nc information ? the resistors had a 12-digit ordering code staring with 2306 327 ? the subsequent first digit indi cated the resistor type and packaging. ? the remaining 4 digits indicated the resistance value: - the first 3 digits indicated the resistance value. - the last digit indicated the resistance decade in accordance with resistance decade table. resistance decade ordering example the ordering code for an pac02, resistor value 47 ? with 1 % tolerance, supplied in ammopack of 500 units was: 2306 327 04709. note (1) radial parts with tin plated copper leads resistance decade last digit 0.10 to 0.976 ? 7 1to9.76 ? 8 10 to 97.6 ? 9 100 to 976 ? 1 1to9.76k ? 2 10 to 12 k ? 3 historical 12nc - resistor type and packaging type 2306 327 ..... bandolier in ammopack radial straight leads 2500 units 500 units 1000 units pac 0 1 r t (1) - 2306 327 5.... pac02 - 2306 327 0.... - pac03 - 2306 327 1.... - pac04 - 2306 327 2.... - pac05 - 2306 327 3.... - pac06 - 2306 327 4.... -
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