HM78D-1210XXXMLF Electrical / Environmental Surface Mount Coupled Inductors Operating Temperature Range Ambient Temperature, Maximum -40C to +125C +85C Temperature Rise, Maximum 40C Ideal for SEPIC applications, high inductance, high efficiency and excellent current handling in rugged, low cost part Use as DC-DC converter and in applications like hand phones, CD/DVD player, digital camera, GPS system. Also used as two single inductors connected series or parallel or as 1:1 transformer Electrical Schematic Coupled inductor, transformer and SEPIC modes Autotransformer and series modes Parallel mode Specifications @ 25C Leads connected in parallel Leads connected in series L (H) DCR max () Irated (A) Isat (A) Irms (A) L (H) HM78D-12104R7MLF 4.7020% 0.014 10.60 18.00 3.250 18.8025% HM78D-12106R8MLF 6.8020% 0.017 10.40 14.20 3.100 27.2025% HM78D-12108R2MLF HM78D-1210100MLF 8.2020% 0.018 9.50 12.85 2.250 32.8025% 10.0020% 0.020 8.60 11.75 3.200 HM78D-1210220MLF 22.0020% 0.040 5.40 8.20 HM78D-1210330MLF 33.0020% 0.050 4.50 HM78D-1210470MLF 47.0020% 0.065 3.70 HM78D-1210560MLF 56.0020% 0.081 HM78D-1210680MLF 68.0020% HM78D-1210101MLF 100.0020% HM78D-1210121MLF Part Irated (A) Isat (A) Irms (A) 0.056 5.30 9.00 1.625 0.068 5.20 7.10 1.550 0.072 4.75 6.45 1.125 41.1225% 0.080 4.30 5.85 1.600 2.700 88.0025% 0.160 2.70 4.10 1.350 6.60 2.000 132.0025% 0.200 2.25 3.30 1.000 5.50 1.900 188.0025% 0.260 1.85 2.75 0.950 3.28 4.90 0.850 224.0025% 0.324 1.64 2.45 0.425 0.098 2.96 4.45 0.800 272.0025% 0.392 1.48 2.20 0.400 0.128 2.54 3.70 0.700 400.0025% 0.512 1.27 1.85 0.350 120.0020% 0.170 2.38 3.40 0.630 480.0025% 0.680 1.19 1.70 0.315 HM78D-1210331MLF 330.0020% 0.440 1.32 2.10 0.410 1320.0025% 1.760 0.66 1.05 0.205 HM78D-1210471MLF 470.0020% 0.570 1.22 1.80 0.300 1880.0025% 2.280 0.61 0.90 0.150 Number Notes : DCR max () (1) Inductance is measured at 100kHz, 0.1Vrms, 0Adc. (2) When leads connected in parallel, DCR is half the value. When lead connected in series, DCR is twice the value (3) Isat current is the saturation current at which inductance rolls off approximately 30% from its initial (zero DC) value. (4) Irms equals DC current, that causes component to increase by 40C from 25C ambient. (5) Irated current is the rated current at which inductance rolls off approximately 10% from its initial (zero DC) value. Mechanical Outline (mm) Recommended PCB Patern Packaging 1) Tape and reel packaging. 2) 300pcs per 13" reel. Ordering Information HM78D-1210 XXX Model Series M LF TR Tape & Reel Packing Lead Free Inductance Code: First 2 digits are significant. Last digit denotes the number of trailing zeros. For values below 10uH, "R" denotes the decimal point. MAGNETIC COMPONENTS SELECTOR GUIDE 2011/2012 EDITION We reserve the right to change specifications without prior notice. Revision : 1 Last Updated: 5 JAN 2012 Inductance Tolerance K=10% M=20%