Automotive TVS — 1500W pulse, AEC-Q101 qualified
The 1.5KE100AHE3_A/C is a 1500W (1.5kW) unidirectional TVS diode from Vishay's TransZorb® series, with AEC-Q101 automotive qualification. The 137V clamping voltage at 10.9A peak pulse current (10/1000µs waveform) defines the protection ceiling — any transient that exceeds 137V is clipped, but the downstream silicon must survive that clamp voltage. The minimum breakdown of 95V gives a guard band above the 85.5V standoff, so the diode doesn't conduct during normal rail ripple.
DO-201AA axial package and board-level fit
Housed in a DO-201AA (DO-27) axial-lead through-hole package. The 1.5KE footprint is standard — two 1.1mm diameter holes on 0.400-inch lead spacing. The axial leads are tin-plated copper; wave solder or hand-solder with a 350°C tip, 3-second dwell max. No power line protection, so this is a signal or low-side supply rail clamp, not a mains-side TVS.