pm-86 low profile shielded drum (sd3112) description ? 125c maximum total temperature operation ? 3.1mm x 3.1mm x 1.2mm shielded drum core ? ferrite core material ? inductance range from 1.0uh to 220uh ? current range from 1.65 amps to 0.113 amps ? frequency range up to 4mhz applications ? cellular phones, digital cameras, cd players, pdas ? small lcd displays ? led driver and led flash circuits ? hard disk drives ? backlighting ? el panel environmental data ? storage temperature range: -40c to +125c ? operating temperature range: -40c to +125c (range is application specific) ? solder reflow temperature: +260c max. for 10 seconds maximum packaging ? supplied in tape and reel packaging, 4100 per reel sd3112 series low profile power inductors part number rated ocl (1) part irms (2) isat (3) dcr ( ) k-factor inductance (h) marking amperes amperes typ. @ (4) (h) designator 20c sd3112-1r0-r 1.0 1.11+/-30% a 1.39 1.65 0.069 135 sd3112-1r5-r 1.5 1.70+/-30% b 1.16 1.33 0.099 110 sd3112-2r2-r 2.2 2.41+/-30% c 0.97 1.12 0.140 92 SD3112-3R3-R 3.3 3.24+/-30% d 0.90 0.97 0.165 79 sd3112-4r7-r 4.7 4.72+/-30% e 0.74 0.80 0.246 66 sd3112-6r8-r 6.8 6.47+/-30% f 0.68 0.68 0.291 56 sd3112-8r2-r 8.2 8.50+/-30% g 0.57 0.60 0.408 49 sd3112-100-r 10.0 10.01+/-30% h 0.55 0.55 0.446 45 sd3112-150-r 15.0 15.28+/-20% i 0.45 0.44 0.654 37 sd3112-220-r 22.0 21.66+/-20% j 0.37 0.37 0.953 31 sd3112-330-r 33.0 33.30+/-20% k 0.30 0.30 1.48 25 sd3112-470-r 47.0 47.44+/-20% l 0.270 0.25 1.85 21 sd3112-680-r 68.0 68.10+/-20% m 0.228 0.211 2.56 17 sd3112-820-r 82.0 83.19+/-20% n 0.213 0.190 2.93 16 sd3112-101-r 100.0 99.8+/-20% o 0.184 0.174 3.95 14 sd3112-151-r 150.0 149.4+/-20% p 0.149 0.142 6.01 12 sd3112-221-r 220.0 219.9+/-20% q 0.121 0.117 9.12 10 (1) open circuit inductance test parameters: 100khz, 0.1v, 0.0adc. (2) irms: dc current for an approximate dt of 40c without core loss. derating is necessary for ac currents. pcb layout, trace thickness and width, air-flow, and proximity of other heat generating components will affect the temperature rise. it is recommended that the temperature of the part not exceed 125c under worst case operating conditions verified in the end application. (3) isat amperes peak for approximately 30% rolloff (@20c) (4) k-factor: used to determine b p-p for core loss (see graph). b p-p = k*l* i, b p-p(mt), k: (k factor from table), l: (inductance in uh), i (peak to peak ripple current in amps). rohs 2002/95/ec
pm-87 low profile shielded drum (sd3112) sd3112 series low profile power inductors dc current vs. temperature 0 10 20 30 40 50 60 70 80 90 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 total loss (w) temp. rise(c) dimensions are in millimeters. parts packaged on 13" diameter reel, 4,100 parts per reel. packaging information p art marking: 3 digit marking: (1st digit: indicates inductance value per letter in part marking designator); (2nd digit: bi-weekly production da te code); (3rd digit: last digit of the year produced). mechanical diagrams
pm-88 low profile shielded drum (sd3112) ocl vs isat 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 110% 120% 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 110% 120% 130% 140% % of isat % of ocl -40c 25c 85c 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 110% 120% 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 110% % of isat % of ocl inductance characteristics sd3112 series low profile power inductors core loss 1mhz 500khz 300khz 200khz 100khz 50khz 0.000001 0.00001 0.0001 0.001 0.01 0.1 1 10 1 10 100 1000 bp-p (mt) core loss (w)
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