What the 1500W rating means on the bench
The 1.5SMC24A M6G: For a 24V rail, the 20.5V reverse standoff means the part sits across the line and stays off until the surge pushes past 22.8V breakdown; it clamps at 33.2V max, so anything downstream rated for 35V or better survives the strike. Rework with hot air is straightforward; the body is large enough to grab with tweezers once the solder flows.
Active lifecycle and what it means for the BOM
The 1.5SMC series is a broad TVS family covering many standoff voltages, so if a different rail voltage is needed later, the same footprint and power rating carry across the series.
Temperature range and board-fit
The junction temperature rise during a 1500W strike is brief but real; the 150°C ceiling ensures the part does not degrade after repeated events. Surface-mount to DO-214AB — the standard SMC footprint. No power line protection (the part is a standalone TVS, not a combination device), so the board designer owns the input filtering and series impedance that limits the surge current to the 47A peak pulse rating.