www.bitechnologies.com 2 6 magnetic components selector guide / 2004 edition www.bitechnologies.com 2 7 2004 edition / magnetic components selector guide we reserve the right to change specifications without prior notice. hm70 high power shielded low profle surface mount inductors ? operating temperature range -40c to +180c ? temperature rise, maximum 50c electrical / environmental ordering information inductance code: first 2 digits are signifcant. last digit denotes the number of trailing zeros. for values below 10 h, r denotes the decimal point. model series case size packaging reel: diameter = 13 (330.2mm) capacity case size 10,20,25,30 = 500 units case size 40,50 = 400 units standard: embossed tape & reel hm70 50 1r2 notes: (1) dc resistance measured at 25c (2) the rated current (i rated ) is the current at which the inductance will be decreased by 20% from its initial (zero dc) value. (3) the heating current is the dc current, which causes the component temperature to increase by approximately 50c. this current is determined by soldering the component on a typical application pcb, and then apply the current to the device for 30 minutes. (4) core loss approximation is based on published core data: core loss (pfe) = k1 * (f) 1.338 * (k2 ? i) 2.2546 where: core loss = in watt f = frequency in khz k1 and k2 = core loss factor ? i = delta i across the component in amp. k2 ? i = one half of the peak to peak fux density across the component in gauss hm70-101r0 1.00 0.63 0.70 2.53 2.90 16 15 9.07e-11 86.721 1 hm70-201r3 1.33 0.93 1.16 3.38 3.74 16 13 1.24e-10 79.134 1 hm70-201r9 1.94 1.28 1.60 4.71 5.42 12 11 1.24e-10 95.591 1 hm70-25r80 0.83 0.488 0.61 1.75 2.01 18 19 1.29e-10 68.630 1 hm70-301r5 1.50 0.80 1.00 2.16 2.48 16 17 1.33e-10 97.919 1 hm70-302r0 2.10 1.12 1.40 3.48 4.00 12 14 1.33e-10 113.246 1 hm70-401r2 1.25 0.92 1.02 1.75 1.80 34 22 2.12e-10 72.072 2 hm70-401r6 1.68 1.15 1.44 2.13 2.36 20 20 2.12e-10 76.245 2 hm70-50r70 0.70 0.40 0.52 1.05 1.26 30 31 2.85e-10 42.602 2 hm70-501r2 1.20 0.80 0.90 1.68 2.00 24 25 2.85e-10 53.556 2 specifcations inductance 100khz 0.1v dcr (1) i rated (2) heating (3) core loss (4) @ 0 adc @ i rated (m ? ) @ 25c current factor part (h20%) (h) (adc) (adc) number typ. min. typ. typ. max. @ ? 50c k1 k2 fig. outline dimensions (mm)
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