2009/10 edition magnetic components selector guide we reserve the right to change specifications without prior notice. www.bitechnologies.com 43 hm55-12r40lf 0.40 0.32 0.35 20 29 1.00 8.76 1.30 2 hm55-14r40lf 0.40 0.32 0.35 15 38 1.75 8.40 1.00 2 hm55-21r43lf 0.43 0.36 0.40 18 27 0.77 4.10 1.30 1 hm55-21r95lf 0.95 0.76 0.84 22.5 33 1.28 6.90 1.30 1 hm55-211r3lf 1.38 1.10 1.25 15 22 2.26 6.60 1.05 1 hm55-22r79lf 0.79 0.56 0.63 27 39 1.20 12.5 1.45 2 hm55-24r28lf 0.28 0.21 0.25 30 85 0.72 12.7 1.30 2 hm55-26r50lf 0.50 0.36 0.40 40 50 0.90 12.7 1.50 2 hm55-311r4lf 1.40 1.08 1.20 35 50 0.98 6.60 1.65 1 hm55-313r0lf 3.00 2.43 2.70 21 30 2.60 9.45 1.30 1 hm55-315r6lf 5.60 4.86 5.40 9 14 7.30 7.11 0.91 1 hm55-321r0lf 1.0 0.72 0.80 40 56 1.25 15.24 1.50 2 electrical / environmental ? operating temperature range -40c to + 155c ? ambient temperature, maximum 100c ? temperature rise, maximum 50c ? insulation system class f, 155c ? operating frequency up to 400khz shielded drum compact package low cost inductors specifications notes: (1) rated current, i rated , is the approximate dc current at which inductance will be decreased by 20% from its initial (zero dc) value or the current at which ? t = 50 c, whichever is lower. (2) i sat is the saturation current at which inductance rolls off approximately 30% from its initial value. (3) dc resistance is measured at 25 c. inductance 100 khz 100 khz, 0.1 v part @ 0 adc @ i rated i rated (1) i sat (2) dcr (3) dim d. dim. e number h 10% h min. h typ. (adc) (adc) m w 5% (mm 0.5) (mm 0.1) fig. figure 1 figure 2 outline dimensions (inch/mm) case size fig . a b c 12 2 .295 .295 .433 7.50 7.50 11.0 14 2 .295 .295 .295 7.50 7.50 7.50 21 1 .413 .433 .413 10.5 11.0 10.5 22 2 .413 .413 .413 10.5 10.5 10.5 24 2 .413 .413 .295 10.5 10.5 7.50 26 2 .413 .413 .355 10.5 10.5 9.00 31 1 .532 .543 .532 13.5 13.8 13.5 32 2 .532 .532 .492 13.5 13.5 12.5 packaging standard : vacuum tray case size capacity per tray capacity per carton (units) (units) 12, 14, 21 40 560 22 44 660 24 50 600 26 45 630 31, 32 44 572 hm55 us 6,847,280 rohs compliant notes : (a) refer to specifcations table for d & e dimensions of each model. (b) for case size 12 & 14, only bi logo & datecode will be printed.
www.bitechnologies.com magnetic components selector guide 2009/10 edition we reserve the right to change specifications without prior notice. 44 electrical characteristics @ 25 c (a) case size 12, 14, 21, 22 & 24
2009/10 edition magnetic components selector guide we reserve the right to change specifications without prior notice. www.bitechnologies.com 45 ordering information electrical characteristics @ 25 c (contd) (b) case size 26, 31 & 32 inductance code: first 2 digits are signifcant. last digit denotes the number of trailing zeros. for values below 10h, r denotes the decimal point. case size: 12 = figure 2 24 = figure 2 14 = figure 2 26 = figure 2 21 = figure 1 31 = figure 1 22 = figure 2 32 = figure 2 model series hm55 - 21 1r3 lf lead-free
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