1500 W peak pulse, AEC-Q101, DO-201AA axial
The Vishay 1.5KE12AHE3_B/C is a 1500 W peak pulse power Zener TVS diode in the TransZorb series, rated for a 10.2 V reverse standoff voltage and clamping at 16.7 V on a 94 A peak pulse current (10/1000 µs waveform).
Protection window and surge capacity
The 10.2 V reverse standoff means the diode draws negligible leakage below that rail voltage; the 11.4 V minimum breakdown triggers clamping at 16.7 V max, so a 12 V nominal supply line sees protection with a 6.5 V margin above the rail before the clamp engages.