Surface Mount Coupled Inductors MODELS HM78D-1210XXXMLF HM78D-1210XXXMLF Operating Temperature Range -40C to +125C Ambient Temperature, Maximum +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 RoHS Compliant Electrical Schematic Coupled inductor, transformer and Autotransformer SEPIC modes and series modes Parallel mode Specifications 25C Leads connected in parallel Leads connected in series DCR Irated Isat Irms DCR Irated Isat Irms Part Number L (H) L (H) Max () (A) (A) (A) Max () (A) (A) (A) HM78D-12104R7MLF 4.7020% 0.014 10.60 18.00 3.250 18.8025% 0.056 5.30 9.00 1.625 HM78D-12106R8MLF 6.8020% 0.017 10.40 14.20 3.100 27.2025% 0.068 5.20 7.10 1.550 HM78D-12108R2MLF 8.2020% 0.018 9.50 12.85 2.250 32.8025% 0.072 4.75 6.45 1.125 HM78D-1210100MLF 10.0020% 0.020 8.60 11.75 3.200 41.1225% 0.080 4.30 5.85 1.600 HM78D-1210220MLF 22.0020% 0.040 5.40 8.20 2.700 88.0025% 0.160 2.70 4.10 1.350 HM78D-1210330MLF 33.0020% 0.050 4.50 6.60 2.000 132.0025% 0.200 2.25 3.30 1.000 HM78D-1210470MLF 47.0020% 0.065 3.70 5.50 1.900 188.0025% 0.260 1.85 2.75 0.950 HM78D-1210560MLF 56.0020% 0.081 3.28 4.90 0.850 224.0025% 0.324 1.64 2.45 0.425 HM78D-1210680MLF 68.0020% 0.098 2.96 4.45 0.800 272.0025% 0.392 1.48 2.20 0.400 HM78D-1210101MLF 100.0020% 0.128 2.54 3.70 0.700 400.0025% 0.512 1.27 1.85 0.350 HM78D-1210121MLF 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 Notes : (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 General Note TT electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT electronics own data and is considered accurate at time of going to print. www.bitechnologies.com TT electronics plc 05.12Surface Mount Coupled Inductors MODELS HM78D-1210XXXMLF Packaging 1) Tape and reel packaging. 2) 300pcs per 13 reel. Ordering Information HM78D-1210 XXX M LF TR Model Series Tape & Reel Packing Inductance Code: Lead-Free First 2 digits are significant. Last digit denotes the number of trailing zeros. For values below 10uH, R Inductance Code: denotes the decimal point. First 2 digits are significant. Last digit denotes the number of trailing zeros. For values below 10H, R denotes the decimal point. General Note TT electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT electronics own data and is considered accurate at time of going to print. www.bitechnologies.com TT electronics plc 05.12