ac03 safety (ac03..cs) www.vishay.com vishay draloric revision: 24-may-12 1 document number: 28861 for technical questions, contact: ww1resistors@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 axial cemented wirewound safety resistor features ? surge voltage capabili ty: 2 kv (30 pulses/ 15 min) as per iec 61000-4-5. higher surge capability on cu stomer request. ? fusing time < 30 s for 45 w overload ? tinned cu wire terminations ? p 40 = 3 w ? ohmic range: 10 ? to 100 ? , 5 % ? special cement coating for immediate interruption without flame and explosion when mains voltage (220 v rms ) is applied ? specially designed for applicat ions in electric appliances, energy meters ? material categorization: for definitions of compliance please see www.vishay.com/doc?99912 vishay has introduced special version of ac 03 wirewound resistors to be used as fusi ble safety resistor (or, ac mains input resistors). it uses specially selected resi stive winding wire and special coating material to ensure safe and silent fusing ope ration in overload conditions. the resistor fuses without a bang when ac mains voltage is applied. at the same time, it acts as a in-rush current limiting resistor for the normal operation. the specially developed lacquer coating matches the thermal and electrical insulating properties of standard silicone ceme nt. this allows designer s to more easily meet the requirements of ul approval, whilst eliminat ing the need to put additional fuses in series with the input resistor. in the conventional wirewound resistor, ceramic rod at the resistor's core acts as a heat sink for the wire element. this can d elay fusing, resulting in high temperatures to fragment the coating and ionize the air near the fusing spot. if ionization occurs cl ose to the cap edge and at a voltage peak in the mains cycle, it can initiate a momentary flashover outside the component body, releasing far more energy than is required to fuse the wire element. although the opening of the circuit is safe for most applications, it can be with a bang with splattering of cement coating. this is un-safe operation and not desirable. ac03 safety resistor has new coating materi al and process to give silent and safe fus ing. it can absorb th ermal stresses withou t fragmenting or burning of resistor coating. note (1) resistance value to be selected for 10 % to lerance from e12 and fo r 5 % from e24 series standard electrical specifications model power rating p 40 c w power rating p 70 c w limiting voltage u max. resistance range (1) ? tcr = 200 ppm/k tolerance % ac03 3 2.5 10 to 100 5 p x r
ac03 safety (ac03..cs) www.vishay.com vishay draloric revision: 24-may-12 2 document number: 28861 for technical questions, contact: ww1resistors@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 packaging 500 pieces ammo pack. functional performance b a g c a 1 dimensions in millimeters model a max. a 1 max. b max. c g ac03..cs 13.0 19 5.5 0.8 63 1 part number and product description part number: AC03000002209JACCS model variant tcr/material value tolerance code packaging code special ac03000 = ac03 0 = neutral 0 = standard 3 digit value 1 digit multiplier multiplier 9 = *10 -1 0 = *10 0 1 = *10 1 j = 5.0 % ac = 500 pieces ammo pack cs = safety resistor product description: ac03 22r 5 % ac g63 cd1281 ac03 22r 5 % ac g63 cd1281 model r value tolerance packaging tape width specification for safety resistor 40 70 0 20 40 60 8 0 100 120 - 40 50 100 150 200 250 ambient temperature in c rated power in % 0 deratin g 0 45 w 8 0 w 100 w 110 w 120 w 60 w 2 4 6 8 10 12 14 16 1 8 20 ac03..cs 22r typical fu s in g g raph fusing time in s overload power in w 3000 022 0 c0 9ja s 0 a c c
ac03 safety (ac03..cs) www.vishay.com vishay draloric revision: 24-may-12 3 document number: 28861 for technical questions, contact: ww1resistors@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 notes ? please see document vishay material category policy: www.vishay.com/doc?99902 ? refer www.vishay.com/doc?28730 for other details ? for further information, please contact: ww1resistors@vishay.com performance test permissible change climatic category (lct/uct/days) 40/200/56 climatic sequence, iec 60115-1, 4.23 ? r = (1 % r + 0.05 ? ) damp heat, steady state, iec 60115-1, 4.24 (40 2) c, 56 days, (93 3) % rh ? r = (5 % r + 0.1 ? ) endurance at room temperature (116 % p 70 ), 1000 h, iec 60115-1, 4.25.2 ? r = (5 % r + 0.1 ? ) endurance at uct, 200 c (30 % p 70 ), 1000 h, iec 60115-1, 4.25.3 ? r = (5 % r + 0.1 ? ) resistance to soldering heat, iec 60115-1, 4.18 (260 5) c, (10 1) s ? r = (0.5 % r + 0.05 ? ) robustness of termination, iec 60115-1, 4.16 ? r = (0.5 % r + 0.05 ? ) short time overload, iec 60115-1, 4.13 10 x rated power for 5 s ? r = (2 % r + 0.1 ? ) fail safe mains fusing at 240v v rms resistance > 100 k ? , fusing time < 2 s (fusing without flames, explosion or smoke)
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