LM257X-H330

Thru-Hole Power Inductor ELECTRONICS INC. EPIXXXXXXAC5 & EPIXXXXXXAC5-LF • Optimized for National’s 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 Primary Specification Part Number EPI221302AC5(-LF) EPI331302AC5(-LF) EPI471202AC5(-LF) EPI681132AC5(-LF) EPI102951AC5(-LF) National Semiconductor Chip LM257X-H220 LM257X-H330 LM257X-H470 LM257X-H680 LM257X-H1000 Induct. (µH ± 20%) @ 0 Adc 260 437 542 757 1093 DCR (Ω Typ.) .090 .117 .210 .247 .297 Induct. (µH 10%) @ Idc 220 330 470 680 1000 Idc (mA) 3000 3000 2000 1300 950 Core Loss @ Vt1 (mW) 510 280 210 150 110 Vt1 (V-µSec) 52 KHz 230.8 230.8 230.8 230.8 230.8 Temp.Rise @ Vt1 °C (Typ.) 23 26 20 12 9 For no header version : add “V” for Vertical Mount and add “H” for Horizonal Mount Applications 7V-40V (60V for HV) Unregulated DC Input Feedback +Vin Cin + LM257X Vsw Output D1 1N5822 LX µH + Cout +5V Regulated Output Load Gnd On/Off Package AC5V Pad Layout .700 Max. (19.78) 1.300 Max. (33.02) .500 (12.70) .060 Ø (1.52) Package AC5 Pad Layout .060 Ø (1.52) .500 (12.70) Package AC5H 1.300 Max. (33.02) 1.300 (33.02) .700 (19.78) .375 ± .125 (9.53 ± 3.18) 1.100 (27.94) Pad Layout 1.300 Max. (33.02) 1.100 (27.94) 1.400 Max. (35.56) .375 ± .125 (9.53 ± 3.18) .500 (12.70) Notes : 1. Lead Finish 2. Peak Solder Rating (for wave solder process Only) .625 (15.75) .110/.150 (2.79/3.81) .500 (12.70) EPIXXXXXXAC5-LF Hot Tin Dip (Sn) 260°C 51 grams TBD pcs / tube .060 Ø (1.52) EPIXXXXXXAC5 SnPb 225°C 51 grams (Tube) TBD pcs / tube 4. Weight 5. Packaging Information Unless Otherwise Specified Dimensions are in Inches /mm ± .010 /.25 PCA ELECTRONICS, INC. 16799 SCHOENBORN ST. NORTH HILLS, CA 91343 Product performance is limited to specified parameters. Data is subject to change without prior notice. CSIXXXXXXAC5 Rev. 4 7/27/06 FT TEL: (818) 892-0761 FAX: (818) 894-5791 http://www.pca.com