PL IA NT CO M *R oH S Features Applications Fuses safely at 220/240 mains voltage White goods Resistance values as high as 2.2K ohms Inverters Flame-proof silicone coating Lighting Low TCR Metering RoHS compliant* Agency approval: PWR4522 Fusible Power Resistors General Introduction The PWR4522A Series of axial leaded wirewound resistors in a flame-proof silicone coating are designed to fuse under abnormal conditions such as sudden surges in voltage or circuit malfunctions. The resistor will fuse instantly upon the application of 220/240 mains voltage without flame or incandescent particles. Agency Approval Electrical Characteristics Model PWR4522 3W 8.2 ohms to 2.2K ohms (E12) 5% 90 PPM/C -55 C to +350 C P*R 16X Rated Power 45 Seconds Max.** Characteristic Power Resistance Range Tolerance Temperature Coefficient Operating Temperature Range Maximum Voltage Fusing Point Fusing Time Description File Number: E349323 UL Approved at 120 Vac UL Materials Resistor ................ Wirewound around a ceramic core Lead Frame .....................Tinned copper Housing ........... Flame-proof thermocoat ** The resistor will fuse safely if 220/240 mains voltage is applied. The time to fuse depends on the resistance value. Power Derating Curve 120 100 38.0 1.5 (1.50 0.06) 11.5 (0.45) MAX. 5.5 (0.22) MAX. 0.8 0.05 (0.03 0.002) DIMENSIONS: MM (INCHES) Power (%) Product Dimensions 80 60 40 20 0 For Standard Values Used in Capacitors, Inductors, and Resistors, click here. 0 50 100 150 200 250 300 350 Ambient Temperature (C) How to Order PWR 4522 A S 8R20 J A Model PWR = Power Resistor Package 4522 = Size (0.45 x 0.22 inches) Pin Style A = Axial Through-hole Version S = Safety Version (Fuses without flames or explosion when 220/240 mains voltage is applied) Resistance Value R<100 ohms "R" represents decimal point R100 ohms First three digits are significant, fourth digit represents number of zeros to follow Resistance Tolerance J = 5 % Packaging A = Ammo Pack (1500 pcs. per pack) *RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. PWR4522 Fusible Power Resistors Environmental Characteristics Test Description Specification Dielectric Withstanding Voltage Based on limiting voltage x 2 for 60 seconds R (1 % +0.05 ) - No flashover, mechanical damage, arcing or insulation breakdown Thermal Shock -55 C +0 C/-3 C to room temperature to +200 C +3 C/-0 C, 5 cycles, with minimum 15 minutes at each cycle (2.0 % +0.05 ) Short Time Overload Five times rated power for 5 seconds (2.0 % +0.05 ) Solderability As per IEC 60068 - 2 -20 Must meet all requirements Resistance to Solder Heat Immersion in solder +260 C to +270 C for 10 0.5 seconds (0.5 % +0.05 ) Dielectric Strength Test voltage >2X maximum voltage for greater than 1 minute (2.0 % +0.05 ) Insulation Resistance Test voltage greater than 500 V rms for one minute >1000 G Humidity +40 C at 93 % RH for 1000 hours no load +5 C (5.0 % +0.05 ) Load Life Rated continuous voltage for 1000 hours 1 hour on and 0.5 hours off at a test temperature of +70 C 2 C (5.0 % +0.05 ) Packaging Specifications Quantity 10.0 0.5 (0.39 0.02) 63.0 2.0 (2.5 0.08) 75.0 2.0 (2.95 0.08) 6.0 1.0 (0.24 0.04) Ammo Pack Box Master Box 275 x 100 x 110 (10.8 x 3.94 x 4.33) 450 x 290 x 330 (17.72 x 11.42 x 12.99) DIMENSIONS: Ammo Pack Master Box 1500 12000 MM (INCHES) Asia-Pacific: Tel: +886-2 2562-4117 Fax: +886-2 2562-4116 Europe: Tel: +41-41 768 5555 Fax: +41-41 768 5510 The Americas: Tel: +1-951 781-5500 Fax: +1-951 781-5700 www.bourns.com REV. 08/12 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.