Document 713-1 For Step-Up, Resonant Coupled Inductors LPR4012 & Flyback Applications Halogen Miniature, shielded coupled inductors are only 1,1 mm high Free and 4 mm square Excellent coupling coefficient (k = 0.95) makes them ideal for use as flyback transformers in DC-DC converters or as coupled inductors in buck regulators to provide multiple AEC + Q200 85C outputs 100 Vrms, one minute isolation (hipot) between windings Wide selection of turns ratios makes them suitable for a variety of voltage step-up and step-down applications Can also be used in autotransformer applications. High Isat and low DCR ratings of these low profile parts provide high efficiency and excellent current handling in a rugged, low cost design Custom inductance values and turn ratios are available upon request. Primary (L1) SRF 4 5 2 3 DCR max (Ohms) Isat (A) Irms (A) inductance Turns typ 1 Part number 20% (H) ratio L1 L2 (MHz) 10% drop 20% drop 30% drop 20C rise 40C rise LPR4012-202AMR 2.0 1 : 1.5 0.240 0.325 61.5 1.70 1.73 1.74 1.10 1.45 LPR4012-202BMR 2.0 1 : 2 0.240 0.480 49.4 1.70 1.73 1.74 1.10 1.45 LPR4012-202DMR 2.0 1 : 3 0.240 1.15 31.0 1.70 1.73 1.74 1.10 1.45 LPR4012-202LMR 2.0 1 : 10 0.240 11.62 7.43 1.70 1.73 1.74 1.10 1.45 LPR4012-103BMR 10.0 1 : 2 0.600 1.55 19.5 0.62 0.64 0.65 0.52 0.70 LPR4012-103DMR 10.0 1 : 3 0.600 3.71 12.8 0.62 0.64 0.65 0.52 0.70 LPR4012-223BMR 22.0 1 : 2 1.16 3.65 11.2 0.43 0.45 0.46 0.43 0.57 LPR4012-223DMR 22.0 1 : 3 1.16 7.08 8.00 0.43 0.45 0.46 0.43 0.57 1. When ordering, please specify termination and packaging codes: LPR4012-223XMRC Termination: R = RoHS compliant matte tin over nickel over silver. 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). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ( 25 charge). D = 13 machine-ready reel. EIA-481 embossed plastic tape. Factory order only, not stocked (3500 parts per full reel). B = Less than full reel. In an effort to simplify our part numbering system, Coilcraft is eliminating the need for multiple packaging codes. When ordering, simply change the last letter of your part number from B to C. 2. Inductance is measured at 100 kHz, 0.1 Vrms, 0 Adc on an Agilent/HP 4284A LCR meter or equivalent. 3. SRF measured using an Agilent/HP 4191A or equivalent. When leads are connected in parallel, SRF is the same value. 4. DC current at 25C applied to L1 that causes the specified inductance drop from its value without current. 5. Current applied to L1 that causes the specified temperature rise from 25C ambient. This information is for reference only and does not represent absolute maximum ratings. Refer to Doc 362 Soldering Surface Mount Components before soldering. Document 713-1 Revised 12/13/21 US +1-847-639-6400 sales coilcraft.com UK +44-1236-730595 sales coilcraft-europe.com Coilcraft Inc. 2021 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 713-2 Coupled Inductors LPR4012 Series Core material Ferrite + D Weight 54 64 mg V C OUT AUX Terminations RoHS compliant matte tin over nickel over silver. Other L2 terminations available at additional cost. Halogen Ambient temperature 40C to +85C with Irms current Free + + Maximum part temperature +125C (ambient + temp rise) L1 Storage temperature Component: 40C to +125C. SW V V IN OUT D C Tape and reel packaging: 40C to +80C Winding to winding isolation 100 Vrms AEC Resistance to soldering heat Max three 40 second reflows at + Q200 85C +260C, parts cooled to room temperature between cycles Typical Buck Converter with auxiliary output Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30C / 85% relative humidity) Packaging 1000/7 reel 3500/13 reel Plastic tape: 12 mm wide, 0.25 mm thick, 8 mm pocket spacing, 1.45 mm pocket depth + + Recommended pick and place nozzle OD: 4 mm ID: 2 mm D PCB washing Tested to MIL-STD-202 Method 215 plus an additional C L1 V L2 OUT aqueous wash. See Doc787 PCB Washing.pdf. V IN C PWM Typical Flyback Converter inches Dimensions are in mm Document 713-2 Revised 12/13/21 US +1-847-639-6400 sales coilcraft.com UK +44-1236-730595 sales coilcraft-europe.com Coilcraft Inc. 2021 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.