Features This series is OBSOLETE AND Fuses safely at 220/240 mains voltage not recommended for new designs. Resistance values as high as 2.2K ohms Flame-proof silicone coating Low TCR RoHS compliant* Agency approval: PWR4522 Fusible Power Resistors General Introduction The PWR4522A Series of axial leaded wirewound resistors in a ameproof 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 ame or incandescent particles. Electrical Characteristics Agency Approval Description Model Characteristic PWR4522 File Number: E349323 UL Power 3 W UL Approved at 120 Vac Resistance Range 8.2 ohms to 2.2K ohms (E12) Tolerance 5 % Materials Temperature Coef cient 90 PPM/C Operating Temperature Range -55 C to +350 C Resistor ................ Wirewound around a ceramic core Maximum Voltage P*R Lead Frame .....................Tinned copper Fusing Point 16X Rated Power Housing ............ Flameproof thermocoat Fusing Time 45 Seconds Max.** ** The resistor will fuse safely if 220/240 mains voltage is applied. The time to fuse depends Power Derating Curve on the resistance value. 120 100 Product Dimensions 80 5.5 38.0 1.5 11.5 (0.22) (1.50 0.06) (0.45) 60 MAX. MAX. 0.8 0.05 MM (0.03 0.002) DIMENSIONS: 40 (INCHES) 20 0 0 50 100 150 200 250 300 350 For Standard Values Used in Capacitors, Inductors, and Resistors, click here. 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 ames or explosion when 220/240 mains voltage is applied) Resistance Value R<100 ohms R represents decimal point R100 ohms First three digits are signi cant, fourth digit represents number of zeros to follow Resistance Tolerance J = 5 % Packaging A = Ammo Pack (750 pcs. per pack) *RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. Speci cations are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their speci c applications. OBSOLETE *RoHS COMPLIANT Power (%)Applications White goods Inverters Lighting Metering PWR4522 Fusible Power Resistors Environmental Characteristics Test Description Speci cation R (1 % +0.05 ) - No ashover, mechani- Dielectric Withstanding Voltage Based on limiting voltage x 2 for 60 seconds cal damage, arcing or insulation breakdown -55 C +0 C/-3 C to room temperature to Thermal Shock +200 C +3 C/-0 C, 5 cycles, with minimum (2.0 % +0.05 ) 15 minutes at each cycle 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 Immersion in solder +260 C to +270 C for 10 Resistance to Solder Heat (0.5 % +0.05 ) 0.5 seconds Test voltage >2X maximum voltage for greater Dielectric Strength (2.0 % +0.05 ) than 1 minute Test voltage greater than 500 V rms for one Insulation Resistance >1000 G minute +40 C at 93 % RH for 1000 hours no load Humidity (5.0 % +0.05 ) +5 C Rated continuous voltage for 1000 hours Load Life 1 hour on and 0.5 hours off at a test (5.0 % +0.05 ) temperature of +70 C 2 C Packaging Speci cations Quantity Ammo Pack Box Master Box Ammo Master Pack Box 275 x 100 x 110 450 x 290 x 330 750 6000 (10.8 x 3.94 x 4.33) (17.72 x 11.42 x 12.99) 10.0 0.5 MM DIMENSIONS: (0.39 0.02) (INCHES) 63.0 2.0 6.0 1.0 (2.5 0.08) (0.24 0.04) 75.0 2.0 (2.95 0.08) REV. 12/1 Speci cations are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their speci c applications. OBSOLETE