1500 W TransZorb for 7.37 V DC rail clamping
The Vishay 1.5KE9.1HE3/54 is a 1500 W peak-pulse power TVS diode in the TransZorb series, rated for a 7.37 V reverse standoff voltage and clamping at 13.8 V with a 109 A peak pulse current (10/1000 µs waveform).
