1500 W peak pulse, 102 V standoff — the clamping decision
The 1.5KE120CAHE3_A/D: It clamps a 102 V reverse standoff voltage to 165 V maximum at a peak pulse current of 9.1 A (10/1000 µs waveform), absorbing 1500 W of peak pulse power in a single surge event.
AEC-Q101 and the 175 °C junction ceiling
The DO-201AA (DO-27) axial-lead package is a through-hole form factor with a 1.5KE supplier device package code. The lead diameter and body length are standard for this power class; the axial leads require a 0.042-inch (1.07 mm) diameter hole in the PCB and a minimum 0.100-inch (2.54 mm) annular ring for solder joint reliability under vibration.