PoE Synchronous Flyback Transformer EPC3408G-LF ELECTRONICS INC. • Designed to work with LT42691 Chip • Storage Temperature : -40°C to +125°C • Operating Temperature : -40°C to +85°C • Small Size and Cost Effective • Max. Duty Cycle : 42% • Lead Free Electrical Parameters @ 25° C Primary OCL (µH ± 10%) Secondary Output Input Voltage (Vdc) Auxiliary Output @ 100 KHz, 1.0 Vrms Leakage Inductance (µH Max.) Turns Ratio DCR (Ω Max.) @ 100 KHz, 1.0 Vrms Aux : Pri : Sec1:Sec2 Pri. Sec. Aux. 37.5 36-57 3.3 (7A) 12 (200 mA) 0.60 1:1.67:0.25:0.25 0.085 0.0065 0.09 Pins 3-5 Pins 3-5 Pins 10/9 - 7/6 Pins 1-2 Pins 3-5 with others shorted Pins 1-2:3-5:10-7:9-6 Pins 3-5 Pins 9-6 or Pins10-7 Pins 1-2 • Isolation : 1500 Vrms (Wdg-Wdg, Wdgs to Core) • Package 0.550 Max. (13.97) 6 0.550 Max. (13.97) 0.090 (2.29) 10 PCA EPC3408G -LF D.C. 5 Schematic 0.050 (1.27) 0.715 (18.16) Pad Layout 1 0.028 (0.711) 0.098 (2.49) 0.098 (2.49) 0.485 Max. (12.32) 0.005/0.015 (0.127/0.381) 0°-8° 1 Aux. 2 10 Sec. 1 7 3 Pri. 5 9 Sec. 2 6 Component Placement Outline 0.740 x 0.550 (18.80 x 13.97) Output 0.008/0.012 (0.203/0.305) 0.031 (0.787) 0.695 Max. (17.65) Notes : EPC3408G-LF 1. Lead Finish Hot Dipped Sn or SnCu 2. Peak Solder Rating 245°C 3. Weight 6.6 grams 4. Packaging Information Tube : Tape & Reel : 40 pieces/tube 400 pieces/13” reel 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. CSC3408G-LF Rev.4 9/2/09 JDG TEL: (818) 892-0761 FAX: (818) 894-5791 http://www.pca.com