Clamping ceiling and protection window
The 1.5SMC82CAHM3_A/H: That 113 V ceiling sits comfortably above the 70.1 V reverse standoff, which defines the normal working voltage the protected node sees in steady state.
Automotive qualification and temperature margin
Junction temperature rated to 150 °C, qualified to AEC-Q101. The automotive grade means it has passed the temperature cycling, humidity, and surge stress screens that distinguish it from the standard 1.5SMC industrial line. For an under-hood ECU input or a telecom rail feeding outdoor equipment, that 150 °C TJ ceiling gives real margin against the derated continuous power figure. The DO-214AB (SMC) package is the standard land pattern for this power class — IPC-7521 stencil opening, 1.2 mm pad pitch, and a thermal pad under the body that conducts heat to the board copper. Second-source options from other AEC-Q101-qualified suppliers use the same footprint, so a pin-compatible alternative is generally available in this series without a board spin.