25W Flyback Transformer EPC3472G & EPC3472G-LF ELECTRONICS INC. • Designed to work with Linear Tech. LTC4278 • Bobbin : UL94V-0 Recognized Materials • Storage Temperature : -40°C to +125°C • Operating Temperature : -40°C to + 85°C • Class 130ºC Insulation System • Duty Cycle : 62% Max. • Switching Frequency : 250kHz • Add “-LF” after part for Lead Free Electrical Parameters @ 25° C Inductance (µH ± 5%) @ 100 KHz, 1.0 Vrms 9.0 Pri. DCR (mΩ Typ.) 13.5 Pri. 280 Turns Ratio 2.6 Aux. 1:0.375 Pri.:Sec. Sec. Cw-w (pF Max.) @ 100 KHz, 1.0 Vrms 1:0.75 Pri.:Aux. 0.25 1500 Pri. to Aux. and Sec. Pri. w/ Aux. and Sec. shorted Wdg. - Wdg. Wdgs. - Core Schematic PCA EPC3472G(-LF) D.C. 12 Pri. 9V to 57V 0.866 Max. (22.00) 6 Aux. 10V (30mA) 1.140 Max. (28.96) 0.028 (0.71) 7 2 11 3 Sec. 5V (5A) 5 8 6 7 0.866 (22.00) Notes : 1. Lead Finish (for wave solder process Only) 3. Weight 1 12 Component Outline 1.20 x 0.840 (30.48 x 21.34) 0.118 (3.00) 2. Peak Solder Rating 0.118 (3.00) 0.080 (2.03) PCB Layout (Top View) 0.079 (2.01) 0.906 Max. (23.01) 12 0.150 (3.81) 0.004 (0.10) 0.453 Max. (11.51) 1 4 7 6 Dielectric Rating (Vrms) 95 Package 1 Leakage Inductance (µH Max.) @ 100 KHz, 1.0 Vrms 4. Packaging Information EPC3472G EPC3472G-LF SnPb Hot Tin Dip (Sn) or SnCu 225°C 260°C 13.5 grams 13.5 grams (Tray) 40 pcs / Tray 40 pcs / Tray (T&R) 150 pcs / Reel 150 pcs / 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. CSC3472G & -LF Rev. 11 06-18-15 TEL: (818) 892-0761 FAX: (818) 894-5791 http://www.pca.com