AC03 Safety (AC03..CS) www.vishay.com Vishay Draloric Axial Cemented Wirewound Safety Resistor FEATURES • Surge voltage capability: 2 kV (30 pulses/ 15 min) as per IEC 61000-4-5. Higher surge capability on customer request. • Fusing time < 30 s for 45 W overload • Tinned Cu wire terminations • P40 = 3 W • Ohmic range: 10 to 100 , 5 % • Special cement coating for immediate interruption without flame and explosion when mains voltage (220 VRMS) is applied • Specially designed for applications in electric appliances, energy meters • Material categorization: For definitions of compliance please see www.vishay.com/doc?99912 Vishay has introduced special version of AC03 wirewound resistors to be used as fusible safety resistor (or, AC mains input resistors). It uses specially selected resistive winding wire and special coating material to ensure safe and silent fusing operation 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 cement. This allows designers to more easily meet the requirements of UL approval, whilst eliminating 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 delay fusing, resulting in high temperatures to fragment the coating and ionize the air near the fusing spot. If ionization occurs close 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 material and process to give silent and safe fusing. It can absorb thermal stresses without fragmenting or burning of resistor coating. STANDARD ELECTRICAL SPECIFICATIONS MODEL AC03 POWER RATING P40 °C W POWER RATING P70 °C W 3 2.5 LIMITING VOLTAGE Umax. P x R RESISTANCE RANGE (1) TCR = ± 200 ppm/K TOLERANCE ±% 10 to 100 5 Note (1) Resistance value to be selected for ± 10 % tolerance from E12 and for ± 5 % from E24 series Revision: 24-May-12 Document Number: 28861 1 For technical questions, contact: [email protected] 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 AC03 Safety (AC03..CS) www.vishay.com Vishay Draloric DIMENSIONS G A1 B A C DIMENSIONS in millimeters MODEL A MAX. A1 MAX. B MAX. C G 13.0 19 5.5 0.8 63 ± 1 AC03..CS PACKAGING 500 pieces ammo pack. PART NUMBER AND PRODUCT DESCRIPTION Part Number: AC03000002209JACCS A C 0 3 0 0 0 0 0 2 2 MODEL VARIANT TCR/MATERIAL VALUE AC03000 = AC03 0 = Neutral 0 = Standard 3 digit value 1 digit multiplier MULTIPLIER 9 = *10-1 0 = *100 1 = *101 0 9 J A C TOLERANCE CODE PACKAGING CODE J = ± 5.0 % AC = 500 pieces ammo pack C S SPECIAL 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 120 FUSING TIME IN s RATED POWER IN % FUNCTIONAL PERFORMANCE 100 80 20 18 AC03..CS 22R 16 14 12 10 60 8 40 6 4 20 2 0 - 40 0 0 DERATING Revision: 24-May-12 50 40 70 100 150 200 250 AMBIENT TEMPERATURE IN °C 45 W 60 W 80 W 100 W 110 W 120 W OVERLOAD POWER IN W TYPICAL FUSING GRAPH Document Number: 28861 2 For technical questions, contact: [email protected] 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 AC03 Safety (AC03..CS) www.vishay.com Vishay Draloric 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 % P70), 1000 h, IEC 60115-1, 4.25.2 R = ± (5 % R + 0.1 ) Endurance at UCT, 200 °C (30 % P70), 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 Fail safe mains Fusing at 240V VRMS R = ± (2 % R + 0.1 ) Resistance > 100 k, fusing time < 2 s (fusing without flames, explosion or smoke) 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: [email protected] Revision: 24-May-12 Document Number: 28861 3 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. 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