Document 458 For National Semiconductor Flyback Transformers LM5070 PoE Interface 7 Watt Flyback transformers for 7 W PoE applications Designed to operate in continuous mode at 250 kHz with an input of 36 72 Vdc 1500 Vrms isolation from primary and bias to secondary Core material Ferrite Terminations RoHS tin-silver over tin over nickel over phos bronze. Other terminations available at additional cost. Weight 3.85 g Ambient temperature 40C to +85C Storage temperature Component: 40C to +85C. Tape and reel packaging: 40C to +80C Resistance to soldering heat Max three 40 second reflows at +260C, parts cooled to room temperature between cycles Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30C / 85% relative humidity) PCB washing Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. See Doc787 PCB Washing.pdf. Inductance Inductance Leakage 4 6 2 3 DCR max (Ohms) Turns ratio 3 Part at 0 A at Ipk inductance Ipk 1 5 7 number 10% (H) min (H) pri bias sec max (H) pri : sec pri : bias (A) Output C1587-AL 155 139.5 0.414 0.822 0.036 4.00 1 : 0.19 1 : 0.667 0.65 3.3 V, 2.12 A C1588-AL 155 139.5 0.414 0.822 0.060 3.60 1 : 0.262 1 : 0.667 0.65 5.0 V, 1.4 A C1589-AL 155 139.5 0.414 0.822 0.343 3.25 1 : 0.667 1 : 0.667 0.65 12 V, 0.6 A 1. When ordering, please specify packaging code: 2. Inductance is for the primary, measured at 10 kHz, 0.1 Vrms, 0 Adc. 3. Ipk is peak primary current drawn at minimum input voltage. C1589-ALD 4. DCR for the secondary is per winding. Packaging: D = 13 machine-ready reel. EIA-481 embossed plastic 5. Leakage inductance measured between pins 3 and 4 with all other pins tape. Quantities less than full reel available: in tape (not shorted. machine ready) or with leader and trailer ( 25 charge). 6. Turns ratio is with the secondary windings connected in parallel. B = Less than full reel. In an effort to simplify our part 7. Output of the secondary is with the windings connected in parallel. Bias numbering system, Coilcraft is eliminating the need winding output is 12 V, 20 mA. for multiple packaging codes. When ordering, simply 8. Electrical specifications at 25C. change the last letter of your part number from B to D. Refer to Doc 362 Soldering Surface Mount Components before soldering. Dot above pin1 6 5 3 0.433 max 11,00 Pri Sec 7 4 0.004/0,10 0.041 8 2 1,05 0.600 max 15,24 Bias Recommended LandPattern 0.050 0.413 1 0.024 1,27 0.080 10,50 0.460 0,60 Secondary windings to be connected 2,03 11,68 8 in parallel on the PC board 1 Packaging: 0.50 max 12,7 C1587-AL 250 per 13 reel Plastic tape: 32 mm wide, 0.5 mm thick, 20 mm pocket spacing, 11.2 mm pocket depth 1 4 5 C1588/C1589-AL 200 per 13 reel Plastic tape: 32 mm wide, 0.098 0.098 0.5 mm thick, 24 mm pocket spacing, 11.2 mm pocket depth inches 2,50 2,50 Dimensions are in mm Document 458 Revised 07/28/21 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.X-ON Electronics Largest Supplier of Electrical and Electronic Components Click to view similar products for Audio Transformers / Signal Transformers category: Click to view products by Coilcraft manufacturer: Other Similar products are found below : CX2041NLT MGPWT-00449-P PE-64961 H1302FNLT H5008FNL H5012FNL H5020FNLT H5077NLT H5079NLT H5084FNLT B78476A9558A003 1812WBT2-4 1879479-1 HX2260FNL HX5014FNL EX2024FNL FL1066 T1137NLT T3012NL PE-65812FNL PE- 65848FNLT H1174FNL H1302FNL H5015FNL H5019EFNL H5062FNLT CX2047LNL MGPWT-00059-P MGPWT-00266-P MGPWT- 00278-P MGPWT-00431-P TTC-100 TTC-143-H TTC-5032-1 BX1194WNLT HX1234NLT HX5008FNLT HX5019FNL HX5084NL 3- 1879385-5 TX1263NLT 4-1879391-0 T1142NL HX6101FNL HX5084FNL HX1148NL HX5020FNLT HX5014FNLT T1124NL 1879732-1