What the 1500W peak pulse rating means for your 36V rail
The SMCJ36AQ-13-F: At that surge condition the device clamps at 58.1V max while conducting 25.8A peak pulse current, so a 36V bus sees the transient clipped well below the downstream IC's abs-max rating.
AEC-Q101 automotive qualification
This part carries AEC-Q101 qualification — the automotive discrete semiconductor stress test that covers temperature cycling, high-temperature reverse bias, and ESD robustness. The -55°C to 150°C junction temperature range matches the under-hood and chassis-mounted ECU environment where the TVS sits directly on the 36V power input.
Housed in a DO-214AB (SMC) surface-mount package, the SMCJ36AQ-13-F uses the standard SMC footprint common across 1500W TVS diodes. The copper pad area under the cathode tab sets the thermal resistance — the board's copper pour and solder mask opening determine how much of the 1500W peak pulse the junction can absorb before the temperature rise exceeds the 150°C limit.