RoHS EFD20 High Frequency Transformer AEFD20-3746 Electrical Specificat ions @25oC EFD20 Core Design 12 Pin SMD Flyback Topology Operating Temperature range: -40ºC to +130ºC Maximum reflow temperature: 250ºC/-5ºC for 20-40 seconds (Refer to IPC/JEDEC J-STD-02C Standard) Specifications @25℃ Inductance Lp @200KHz, 0.1V (1,2 - 3,4) 20.5uH (±5%) Leakage Inductance Ls @ 200KHz, 0.1V (tie 7+8+9+10+11+12) (1,2 - 3,4) DCR (1,2 - 3,4) DCR (5 - 6) DCR (12,11,10 – 9,8,7) Isolation Voltage 3mA, 1sec, 60Hz 1,2,5 to 12,11,10 1.0uH Max 39mΩ max 230mΩ max 8.5mΩ max 1800Vac All specifications subject to change without notice. MECHANICAL Marking : A ● ALLIED 29.21 Max AEFD20-3746 B 21.84 Max C 12.00 Max D 24.60 Ref E 2.00 Ref F 3.00 ± 0.10 G 0.70 ± 0.10 ● YYWW Remark: YYWW=DATE CODE, YY=YEAR; WW=WEEK Unit : mm SCHEMATICS 714-665-1140 ALLIED COMPONENTS INTERNATIONAL 05/21/12 15 www.alliedcomponents.com