Clamping voltage and the transient budget
The 1.5SMC36A-M3/9AT: Rated for 1500 W peak pulse power at a 10/1000 µs waveform, this unidirectional Zener TVS clamps at 49.9 V maximum while conducting 30.1 A. If the transient pushes the line voltage above 49.9 V, the diode absorbs the energy until the upstream fuse or breaker clears — the clamping voltage is the hard ceiling the protected circuit sees. Breakdown starts at 34.2 V minimum, so the part begins conducting only when the transient exceeds that threshold.
Package and board-fit for field rework
The supplier device package is DO-214AB (SMCJ), so the pad layout is standard and the part can be swapped on site with a hot-air station — no preheater needed for a single-device rework. Surface-mount on tape and reel means it feeds straight into a pick-and-place line — no manual insertion step.