e l e c t r o n i c s i n c . thru-hole power inductor tel: (818) 892-0761 fax: (818) 894-5791 http://www.pca.com pca electronics, inc. 16799 schoenborn st. north hills, ca 91343 ? optimized for national? lm257x series ? low loss material ensures operation in high frequency switching converters, such as buck, boost or as output averaging filter inductor ? also suitable for use in high quality filter applications ? add ?lf?after part number for lead-free ? 52 khz switching frequency ? low cost inductor epixxxxxxac5 & epixxxxxxac5-lf product performance is limited to specified parameters. data is subject to change without prior notice. primary specification unless otherwise specified dimensions are in inches /mm ?.010 /.25 csixxxxxxac5 rev. 4 7/27/06 ft 260 437 542 757 1093 induct. (? ?20%) @ 0 adc dcr ( w typ.) .090 .117 .210 .247 .297 vt1 (v-?ec) 52 khz 230.8 230.8 230.8 230.8 230.8 induct. (? 10%) @ idc 220 330 470 680 1000 part number EPI221302AC5(-lf) epi331302ac5(-lf) epi471202ac5(-lf) epi681132ac5(-lf) epi102951ac5(-lf) idc (ma) 3000 3000 2000 1300 950 national semiconductor chip lm257x-h220 lm257x-h330 lm257x-h470 lm257x-h680 lm257x-h1000 @ vt1 ? (typ.) 23 26 20 12 9 temp.rise core loss 510 280 210 150 110 @ vt1 (mw) package ac5 applications +vin +5v regulated output load lx ? d1 1n5822 cin cout feedback output vsw on/off gnd lm257x + + 7v-40v (60v for hv) unregulated dc input package ac5v package ac5h 1.400 max. (35.56) .110/.150 (2.79/3.81) 1.300 (33.02) .500 (12.70) .700 (19.78) .500 (12.70) pad layout .060 (1.52) .625 (15.75) .375 ?.125 (9.53 ?3.18) 1.300 max. (33.02) pad layout .500 (12.70) .060 (1.52) .700 max. (19.78) .500 (12.70) .375 ?.125 (9.53 ?3.18) 1.300 max. (33.02) pad layout 1.100 (27.94) .060 (1.52) 1.300 max. (33.02) 1.100 (27.94) for no header version : add ??for vertical mount and add ??for horizonal mount notes : 1. lead finish 2. peak solder rating (for wave solder process only) 4. weight 5. packaging information (tube) epixxxxxxac5 snpb 225? 51 grams tbd pcs / tube epixxxxxxac5-lf hot tin dip (sn) 260? 51 grams tbd pcs / tube
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