Understanding the MOSFET peak drain current rating

This whitepaper provides an explanation of the derivation of the maximum drain current as a function of pulse duration rating. Idm is the maximum rated peak drain current for a power MOSFET. It is difficult for the user to know what the capability would be at different time durations. Some information can be gleaned from the Safe Operating Area (SOA) graph, however, it is still hard to assess the actual capability for different time intervals.

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