Bridge Rectifier Fried?

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Harold W. Lehmann's picture

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Joined: Jan 12, 2022

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Bridge Rectifier Fried?
January 12, 2022 - 5:20am

I connected a "KBPC5010 Silicon Bridge Rectifier Diode 50A 1000V" to an output of 110VAC at 25KHz with a 1500 Watt load and Rectifier fried in less then 5 sec. Diode was mounted on a large heat sink and didn't even get warm before it fried.  Is it because this bridge can't switch 25KHz at this wattage.  Would draw about 14 Amps which is much less then 50 Amp rating.