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| *rohs directive 2002/95/ec jan 27 2003 including annex specifications are subject to change without notice. customers should verify actual device performance in their specific applications. *rohs compliant srp1255 series - shielded power inductors features shielded construction unit height of 5.4 mm inductance range: 0.68 h to 4.7 h current up to 29.7 a rohs compliant* electrical specifications product dimensions max. 12.9 0.3 (0.508 0.012) 13.9 (0.547) max. nc nc 12 7.6 0.3 (0.299 0.012) 2.0 0.3 (0.079 0.012) 1.5 (0.059) 2.2 0.3 (0.087 0.012) 5.2 (.205) max. 5.4 (.213) 12.9 0.3 (0.508 0.012) 13.9 (0.547) max. r68 2.5 (.098) general specifications test voltage...................................0.25 v test frequency ..........................100 khz reflow soldering .....230 ?c; 50 sec max. operating temperature ..-55 ? to +150 ? (temperature rise included) storage temperature..-55 ? to +150 ? resistance to soldering heat ..............................+260 ? for 10 sec. materials core...................................................iron wire .............................enameled copper terminal .........................................cu/sn rated current....... ind. drops 20 % at i sat temperature rise..........40 ?c at rated i rms packaging .......500 pcs. per 13-inch reel recommended layout electrical schematic nc 12 inductance i rms i sat dcr bourns part no. l ( h) (a) (a) (m ? ) max. srp1255-r68m 0.68 29.7 38.8 1.5 srp1255-1r0m 1.00 25.7 33.6 2.0 SRP1255-1R2M 1.20 23.1 26.9 2.6 srp1255-2r2m 2.20 17.8 19.6 4.5 srp1255-3r3m 3.30 14.4 17.5 7.0 srp1255-4r7m 4.70 12.8 14.9 8.8 *rohs compliant soldering profile 25 75 125 175 225 275 0 50 100 150 200 250 300 time (seconds) temperature (c) 120-150 seconds 60 seconds maximum 260 c peak 190c 150 c 220 c ramp down 5 c/second <1> 255 c <1> maximum of 10 seconds between +255 c and +260 c ramp up 4 c/second maximum 10 seconds minimum dimensions: mm (inches) 2.9 (.114) 9.7 (.382) 2.4 (.094) 15.0 (.591) 3.0 (.118) nc 2.5 (.098) 2.5 (.098) 5.0 (.197) the srp1255 series is currently available, although not recom- mended for new designs. the srp1250 series is preferred. obsolete
specifications are subject to change without notice. customers should verify actual device performance in their specific applications. srp1255 series - shielded power inductors l vs. i charts 0 0 5 10 15 20 25 30 35 40 45 50 55 0.2 0.4 0.6 0.8 1.0 inductance ( h) dc current (a) srp1255-r68m 0 0 5 10 15 20 25 30 35 40 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.8 1.6 2.0 inductance ( h) dc current (a) srp1255-1r0m 0 02 4 0.5 1.0 1.5 2.0 2.5 3.0 4.0 3.5 4.5 inductance ( h) dc current (a) srp1255-2r2m 6 8 10 12 14 16 18 20 0 03 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 inductance ( h) dc current (a) SRP1255-1R2M 6 9 12 15 18 21 24 27 30 0 02468101214161820 1 2 3 5 4 6 inductance ( h) dc current (a) srp1255-3r3m 0 2 4 6 8 10 12 14 16 18 20 0 2.5 inductance ( h) dc current (a) srp1255-4r7m 5.0 7.5 10.0 12.5 15 rev. 03/09 packaging specifications 24.0 0.5 (0.95 0.020) 2.0 0.5 (.079 .020) 75.0 2.0 (2.96 0.08) 330.0 (13.00) dia. 13.5 0.5 (.53 .020) dia. 13.5 0.5 (0.53 .020) dia. embossed carrier embossed cavity 0.10 (.004) thickness max. dimensions: mm (inches) 1.5 0.1 (0.059 0.004) 0.15 (0.0006) 2.0 0.1 (0.079 0.004) 4.0 0.1 (0.157 0.004) dia. dia. 0.35 0.05 (0.014 0.020) 5.6 0.1 (0.220 0.004) 13.9 0.1 (0.547 0.004) 16.0 0.1 (0.629 0.004) 13.5 0.1 (0.520 0.004) 24.0 0.3 (0.95 0.012) 1.75 0.1 (.069 0.004) 2.2 0.3 (.087 0.012) applications input/output of dc/dc converters power supplies for: portable communications equipment camcorders lcd tvs car audio systems obsolete |
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