The 1.5KE22AE3/TR13: Reverse standoff is 18.8 V typical — the rail it protects should sit below that to avoid leakage in normal operation. Breakdown voltage starts at 20.9 V minimum, and the clamping voltage peaks at 30.6 V when the 49 A peak pulse current flows — that 30.6 V ceiling is what the downstream components must survive. Single unidirectional channel, Zener-type avalanche structure — polarity matters; the cathode band marks the protected line side.
Package and board integration
DO-201AA (DO-27) axial-lead through-hole package, supplier case CASE-1 — the body diameter and lead spacing match standard 0.100-inch pitch hole patterns on a PCB or terminal strip. Operating junction temperature range -65°C to 150°C covers military and industrial thermal extremes — the derating curve above 25°C reduces peak pulse power linearly.