Clamping parametrics and surge rating
The 1.5KE75CA-E3/73: Reverse standoff voltage is 64.1 V, breakdown minimum is 71.3 V, and the clamping voltage at peak pulse current (14.6 A) is 104 V. The 1500 W rating means the device can absorb a single 10/1000 µs surge up to that power level without exceeding the junction temperature limit of 175 °C. For repetitive transients, the average power dissipation must be derated per the datasheet thermal impedance curve.
Package and board integration
Housed in a DO-201AA (DO-27) axial-lead package, the 1.5KE75CA-/73 mounts through-hole. The leaded form factor suits point-to-point wiring, terminal blocks, or PCB through-holes in power-supply and industrial-control boards where surface-mount TVS diodes are not preferred due to board thickness or thermal cycling requirements. The wide junction temperature margin ensures the clamping performance holds across the full ambient range without derating the surge capability.