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EFD50 High Voltage TransformerEFD50 power transformer bobbin, horizontal EFD50 7+9 pins coil former. Bobbin size=72.4X45.0mmX12.7mm. Parallel distance=48.7mm, Pin distance=5.0mm. EFD50 Transformer frame L pins. double grooves EFD50 transformer mainly used for switching power supplies, welcome customized transformers and inductors.