Document 580-1 Shielded Coupled Inductors LPD4012 Only 1.1 mm high and 4 mm square Ideal for use in flyback, multi-output buck and SEPIC applications. High inductance, high efficiency and excellent current handling Can also be used as two single inductors connected in series or parallel or as a common mode choke. + + D C V L1 L2 OUT C V IN SW Typical Flyback Converter + D V OUT C AUX L2 ++ L1 V V C OUT D IN SW Dot indicates pin 1 14 1 4 Typical Buck Converter with auxiliary output 0.155 0.003* L1 L2 3,94 0,076 D ++ XXXX 23 2 3 C1 L1 V C V Q L2 C OUT IN Dash Internal number code 0.155 0.003* Typical SEPIC schematic 3,94 0,076 Recommended 0.0433 0.004* Core material Ferrite LandPattern 1,10 0,10 Core and winding loss Go to online calculator ++ Weight 54 64 mg L2 C1 1 4 45 Q typ Environmental RoHS compliant, halogen free V CCD OUT V L1 0.031 IN Terminations RoHS compliant matte tin over nickel over silver. 0,78 0.103 0.049 0.174 Other terminations available at additional cost. 2,61 1,25 4,40 Ambient temperature 40C to +85C with (40C rise) Irms current. Typical Zeta schematic Maximum part temperature +125C (ambient + temp rise). 2 3 Storage temperature Component: 40C to +125C. 0.049 0.060 Tape and reel packaging: 40C to +80C 1,25 1,52 Winding to winding isolation 100 V 0.103 * Dimensions are of the case not including Resistance to soldering heat Max three 40 second reflows at 2,61 the termination. For maximum overall +260C, parts cooled to room temperature between cycles 0.174 dimensions including the termination, add 4,40 Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30C / 0.005 in/ 0.13 mm. 85% relative humidity) For optional tin-lead and tin-silver-copper terminations, dimensions are for the Failures in Time (FIT) / Mean Time Between Failures (MTBF) inches mounted part. Dimensions before mounting 38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332 Dimensions are in can be an additional 0.005 in/ 0.13 mm. mm PCB washing Tested to MIL-STD-202 Method 215 plus an additional Packaging 1000/7 reel 3500/13 reel Plastic tape: 12 mm wide, aqueous wash. See Doc787 PCB Washing.pdf. 0.25 mm thick, 8 mm pocket spacing, 1.32 mm pocket depth Recommended pick and place nozzle OD: 4 mm ID: 2 mm Document 580-1 Revised 02/24/17 US +1-847-639-6400 sales coilcraft.com UK +44-1236-730595 sales coilcraft-europe.com Coilcraft Inc. 2017 This product may not be used in medical or high Taiwan +886-2-2264 3646 sales coilcraft.com.tw risk applications without prior Coilcraft approval. China +86-21-6218 8074 sales coilcraft.com.cn Specification subject to change without notice. Singapore + 65-6484 8412 sales coilcraft.com.sg Please check web site for latest information.Document 580-2 Coupled Inductors for SEPIC Applications LPD4012 Series 6 Isat (A) Irms (A) Coupling Leakage 2 3 4 5 Inductance DCR max SRF typ coefficient L typ 10% 20% 30% both one 1 7 8 Part number (H) (Ohms) (MHz) typ (H) drop drop drop windings winding LPD4012-331NR 0.33 30% 0.042 255 0.94 0.06 5.2 5.4 5.6 1.87 2.65 LPD4012-561NR 0.56 30% 0.087 185 0.95 0.08 3.7 3.8 3.9 1.30 1.84 LPD4012-821NR 0.82 30% 0.100 130 0.97 0.09 3.2 3.3 3.4 1.21 1.72 LPD4012-152NR 1.5 30% 0.185 86 0.97 0.11 2.50 2.81 2.91 1.15 1.62 LPD4012-222NR 2.2 30% 0.235 70 0.98 0.14 2.30 2.40 2.50 0.95 1.35 LPD4012-332NR 3.3 30% 0.320 48 0.98 0.16 1.80 1.90 2.00 0.75 1.06 LPD4012-472MR 4.7 20% 0.500 39 0.98 0.18 1.70 1.80 1.90 0.65 0.92 LPD4012-562MR 5.6 20% 0.620 32 0.99 0.20 1.60 1.70 1.80 0.55 0.78 LPD4012-682MR 6.8 20% 0.530 31 0.99 0.22 1.20 1.52 1.63 0.60 0.86 LPD4012-822MR 8.2 20% 0.600 29 0.99 0.24 1.10 1.20 1.30 0.55 0.78 LPD4012-103MR 10 20% 0.750 25 0.99 0.26 0.98 1.00 1.10 0.50 0.71 LPD4012-153MR 15 20% 1.13 21 0.99 0.30 0.90 0.92 0.94 0.43 0.60 LPD4012-223MR 22 20% 1.63 15 0.99 0.34 0.70 0.82 0.84 0.34 0.48 LPD4012-333MR 33 20% 1.83 12 >0.99 0.41 0.37 0.57 0.58 0.31 0.44 LPD4012-473MR 47 20% 2.52 8.8 >0.99 0.51 0.33 0.39 0.40 0.28 0.39 LPD4012-683MR 68 20% 3.23 7.8 >0.99 0.66 0.27 0.36 0.37 0.25 0.36 LPD4012-823MR 82 20% 3.66 7.3 >0.99 0.75 0.27 0.27 0.29 0.23 0.31 LPD4012-104MR 100 20% 4.76 6.1 >0.99 0.86 0.22 0.28 0.29 0.20 0.27 LPD4012-124MR 120 20% 5.54 5.3 >0.99 0.98 0.21 0.26 0.27 0.19 0.27 LPD4012-154MR 150 20% 6.90 4.6 >0.99 1.19 0.18 0.26 0.27 0.17 0.23 LPD4012-184MR 180 20% 8.75 4.1 >0.99 1.40 0.16 0.21 0.23 0.14 0.18 LPD4012-224MR 220 20% 11.24 3.3 >0.99 1.66 0.15 0.16 0.17 0.12 0.17 LPD4012-334MR 330 20% 17.00 2.8 >0.99 2.45 0.13 0.16 0.16 0.10 0.14 1. Please specify termination and packaging codes: Coupled Inductor Core and Winding Loss Calculator This web-based utility allows you to enter frequency, peak-to-peak LPD4012-334MRC (ripple) current, and Irms current to predict temperature rise and Termination: R = RoHS compliant, matte tin over nickel over silver. overall losses, including core loss. Go to online calculator. Special order: Q = RoHS tin-silver-copper (95.5/4/0.5) or P = non-RoHS tin-lead (63/37). Packaging: C = 7 machine-ready reel. EIA-481 embossed plastic tape (1000 parts per full reel). B = Less than full reel. In tape, but not machine ready. To have a leader and trailer added ( 25 charge), use code letter D instead. D = 13 machine-ready reel. EIA-481 embossed plastic tape. Factory order only, not stocked (3500 parts per full reel). 2. Inductance shown for each winding, measured at 100 kHz, 0.1 Vrms, 0 Adc on an Agilent/HP 4284A LCR meter or equivalent. When leads are connected in parallel, inductance is the same value. When leads are connected in series, inductance is four times the value. 3. DCR is for each winding. When leads are connected in parallel, DCR is half the value. When leads are connected in series, DCR is twice the value. 4. SRF measured using an Agilent/HP 4191A or equivalent. When leads are connected in parallel, SRF is the same value. 5. Leakage Inductance is for L1 and is measured with L2 shorted. 6. DC current at 25C that causes the specified inductance drop from its value without current. It is the sum of the current flowing in both windings. 7. Equal current when applied to each winding simultaneously that causes a 40C temperature rise from 25C ambient. This information is for reference only and does not represent absolute maximum ratings. 8. Maximum current when applied to one winding that causes a 40C temperature rise from 25C ambient. This information is for reference only and does not represent absolute maximum ratings. 9. Electrical specifications at 25C. Refer to Doc 639 Selecting Coupled Inductors for SEPIC Applications. Refer to Doc 362 Soldering Surface Mount Components before soldering. Document 580-2 Revised 02/27/17 US +1-847-639-6400 sales coilcraft.com Document 580-2 Revised 02/15/11 UK +44-1236-730595 sales coilcraft-europe.com Coilcraft Inc. 2017 This product may not be used in medical or high Taiwan +886-2-2264 3646 sales coilcraft.com.tw risk applications without prior Coilcraft approval. China +86-21-6218 8074 sales coilcraft.com.cn Specification subject to change without notice. Singapore + 65-6484 8412 sales coilcraft.com.sg Please check web site for latest information.