Forward Transformer EPC3577G-LF ELECTRONICS INC. • • • • • • • • • 90W PoE Synchronous Forward Transformer Designed to work with Linear Technology LT4276A Lead free Class B Insulation System Switching Frequency: 200kHz Duty Cycle: 65% Max. Switching Ipeak: 7A Operating Temperature: -40°C to +125°C Storage Temperature: -40°C to +125°C Electrical Parameters @ 25°C Inductance (µH±10%) @100kHz,1.0Vrms Leakage Inductance Interwinding Capacitance (µH Max.) (pF Max.) @100kHz, 0.1Vrms DCR (mΩ Max.) Turns Ratio 60Hz, 60 secs @100kHz, 0.1Vrms 25 180 0.45 250 Primary Primary with Aux. & Sec. shorted Primary to Aux. & Secondary 200 Primary Aux. 10 1 1.5:0.875:1 Secondary Pri.: Aux.: Sec Package 0.906 Max. (23.0) Hipot (Vrms) 0.028 (0.700) 2 Primary Vin: 33V - 57V 12 0.591 (15.00) 0.830 (21.08) 12 11 10 1 7 Secondary 12V (7.5A) 9 8 7 Aux. 10V (50mA) 6 1500 Pri. & Aux. to Sec. Schematic 5 0.118 (3.00) 1500 Wdgs. to Core 6 Pins 3 & 4 - no connection Component Outline 1.20 x 0.906 (30.48 x 23.00) 0.125 (3.175) Notes EPC3577G-LF 1. Lead Finish Pb-Free 2. Peak Solder Rating PCB Layout 0.118 (3.00) 0.065 (1.65) 260°C 3. Weight 4. Packaging Information 14.6 grams (Tray) 40 pcs./ Tray 1.150 (29.21) 0.018 (0.450) 0°-8° 0.047 (1.20) 0.453 Max. (11.50) 0.004 Max. (0.100) 0.010 (0.25) 12 Surfaces 1.140 Max. (28.86) Unless Otherwise Specified Dimensions are in Inches /mm ± .010 /.25 PCA ELECTRONICS, INC. 16799 SCHOENBORN ST. NORTH HILLS, CA 91343 Product performance is limited to specified parameters. Data is subject to change without prior notice. CSC3577G-LF Rev. 4 08/03/15 TEL: (818) 892-0761 FAX: (818) 894-5791 http://www.pca.com