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Q&A Power switches and automotive load dump, unclamped

The spec 79V 0.5 ohm 5ms = 62.41 Joules . The TVS must be rated for a low temp. rise at this energy dump or higher. MOV's are limited by the number of discharges as the oxide wears out, but may be...

posted 8mo ago by TonyStewart‭

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#1: Initial revision by user avatar TonyStewart‭ · 2023-08-29T00:00:36Z (8 months ago)
The spec 79V 0.5 ohm 5ms = 62.41 Joules . The TVS must be rated for a low temp. rise at this energy dump or higher.

  MOV's are limited by the number of discharges as the oxide wears out, but may be used if size appropriately for desired MTBF.