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EE22 Switching Power Transformer Vertical BobbinEE22 soft ferrite core bobbin. 5+5 pin vertical version EE22 coil former. Bobbin Size=21.9mmX16.0mmX17.0mm. Parallel Distance=10.4mm. Pin pitch=4.0mm. We have over 10 years in producing and selling bobbins, we have many type bobbin toolings. We also manufacture final high frequency transformers for power supply.