1500 W peak pulse, AEC-Q101, now obsolete
The 1.5KE75CAHE3/51: It clamps at 104 V max with a 64.1 V reverse standoff and 71.3 V minimum breakdown voltage, handling 14.6 A peak pulse current. Part of the Automotive, AEC-Q101 qualified TransZorb series, it is designed for transient protection in automotive electronics — engine control units, infotainment, and body controllers that see load-dump and inductive-switching spikes. Vishay lists this part as obsolete.
Clamping voltage and pulse capability
The 104 V clamping voltage at 14.6 A peak pulse current defines the protection ceiling — any downstream circuitry must survive that voltage for the 10/1000 µs pulse duration. The 64.1 V standoff means the diode stays transparent on a nominal 48 V or 60 V bus, only clamping when the transient exceeds the breakdown threshold.