power inductors (smd t ype) CDRH4D28C outline / CDRH4D28C dimensions (mm) / y? l measuring freq. (l) CDRH4D28C 100 khz / tolerance of inductance CDRH4D28C ? ?? h tt p :/ / w w w. s um id a . c o m re v 1 . 0 0 9 / 2 0 0 4 north america tel:(1) 847 545-6700 fax:(1) 847 545-6720 e-mail: sales@us.sumida.com japan tel:(81) 03 3667-3302 fax:(81) 03 3667-3408 hong kong tel:(852) 2880-6688 fax:(852) 2565-9600 e-mail: sales@hk.sumida.com taiwan tel:(886) 2 2726-2177 fax:(886) 2 2728-2726 e-mail: sales@tw.sumida.com singapore tel:(65) 6296-3388 fax:(65) 6296-3390 e-mail: sales@sg.sumida.com europe tel:(32) 2673-9565 fax:(32) 2672-0454 e-mail: sales@eu.sumida.com construction ? ? ? shielded type / _ land patterns (mm) ?X? 1.1 h C 100 h 25% CDRH4D28C parts no . l (h) d.c.r.( ? ) : max.(typ.) t e mperature rise rated curren t (a) * 3 smd type power inductors where by the electrode is attached to the ferrite core directly. they are also magnetically shielded to prevent noise radiation. I?O?????g??`????]]r?? / oUu ? about lead-free products . lead-free products are now available for sale . to order a lead-free product, please add"np" after the product type: oUu??F????? ??Hu??np?? e.g. ordering code of lead-free product: type name np . . ordering code of lead product: type name- *3 ?? r 65% k t=4 0 (ta=2 0 ) / rated current *3 it is either the inductance is 35% lower than its nominal value in d.c. saturation characteristics ? t=40 c( t a=20 c), whichever is lowe r . or temperature raise becomes 1r0 1r1 1r2 1r5 1r8 2r0 2r2 2r3 2r7 3r2 3r3 3r9 4r7 5r6 6r3 6r8 8r2 100 120 150 180 220 270 330 390 470 560 680 820 101 121 151 181 1.0 1.1 1.2 1.5 1.8 2.0 2.2 2.3 2.7 3.2 3.3 3.9 4.7 5.6 6.3 6.8 8.2 10 12 15 18 22 27 33 39 47 56 68 82 100 120 150 180 3.8 2.6 2.3 1.8 1.3 1.26 1.05 850m 700m 540m 490m 400m 22m( 17.5m) 29m( 23.0m) 42m( 33.3m) 63m( 50.0m) 94m( 75.0m) 106m( 85.0m) 137m(110.0m) 207m(166.0m) 331m(265.0m) 510m(408.0m) 625m(500.0m) 948m(758.0m) ( 1.1 h - 100 h ) 5.1max. . x a m 1 . 5 3.0max. . x a m 2 . 6 4 . 1 4 . 4 5 . 6 0 . 4 0 . 2
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