features fuses safely at 220/240 mains voltage resistance values as high as 2.2k ohms flame-proof silicone coating low tcr rohs compliant* agency approval: applications white goods inverters lighting metering pwr4522 fusible power resistors *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 perfor mance may vary over time. users should verify actual device performance in their speci c applications. power derating curve dimensions: mm (inches) electrical characteristics model characteristic pwr4522 power 3 w resistance range 8.2 ohms to 2.2k ohms (e12) tolerance 5 % temperature coef cient ?0 ppm/? operating temperature range -55 ? to +350 ? maximum voltage p*r fusing point 16x rated power fusing time 45 seconds max.** product dimensions 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 2 20/240 mains voltage without ame or incandescent particles. ** the resistor will fuse safely if 220/240 mains voltage is applied. the time to fuse depends on the resistance value. materials resistor ................ wirewound around a ceramic core lead frame .....................tinned copper housing ............ flameproof thermocoat 0 0 50 100 150 200 250 300 350 20 40 power (%) ambient temperature (?) 60 80 100 120 11.5 (0.45) max. 38.0 1.5 (1.50 0.06) 5.5 (0.22) max. 0.8 0.05 (0.03 0.002) 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 ??represents decimal point r 100 ohms first three digits are signi cant, fourth digit represents number of zeros to follow resistance tolerance j = ? % packaging a = ammo pack (750 pcs. per pack) for standard values used in capacitors, inductors, and resistors, click here. *rohs compliant agency approval description ul file number: e349323 ul approved at 120 vac
pwr4522 fusible power resistors rev. 03/13 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 perfor mance may vary over time. users should verify actual device performance in their speci c applications. dimensions: mm (inches) environmental characteristics test description speci cation dielectric withstanding voltage based on limiting voltage x 2 for 60 seconds r ?(1 % +0.05 ) - no ashover, mechani- cal damage, arcing or insulation breakdown thermal shock -55 ? +0 ?/-3 ? to room temperature to +200 ? +3 ?/-0 ?, 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 ? to +270 ?c for 10 ?.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 ? ? ? ?5.0 % +0.05 ) packaging speci cations 63.0 2.0 (2.5 0.08) 10.0 0.5 (0.39 0.02) 75.0 2.0 (2.95 0.08) 6.0 1.0 (0.24 0.04) ammo pack box master box quantity ammo pack 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) 750 6000 asia-paci c: 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
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