I'm choosing a transient voltage suppressor to absorb the freewheeling current from a 1mH inductor in the rare situation the output of a SMPS is disconnected during load.
The maximum output current is 6A and I have chosen a TVS with a maximum clamping voltage of 602 volts. (The 1.5KE440CA*) On the TVS datasheet the maximum peak pulse current is specified at 3.1 amps for a 10/1000us test waveform. Can I use this part safely in knowledge that the pulse width in my application is much shorter (10us for 6A to ramp down to 0A based on my calculations)?
The reason I think it may be safe is because in the datasheet the Peak Pulse Power Rating for a 10us pulse is 15kW. The peak power at the start of the my pulse (6A across the 602V clamp will be a measly 3.6kW)