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EFD20 Flyback Transformer Multi-Section BobbinFerrite core EFD20 bobbin, multi section coil former L pins, SMD type transformer frame 7+2 pins. Bobbin size=26.3X17.8mmX7.7mm. Pin pitch=3.0mm. Row distance=24.1mm. Power transformer EFD20 for charger, welcome customized transformer.