1500W peak pulse in an automotive-grade DO-214AB
The 1.5SMC10AHR7G is a 1500W peak pulse power Zener TVS diode from Taiwan Semiconductor Corporation, housed in a DO-214AB (SMC) package. The 108A peak pulse current handling at the 10/1000µs pulse shape gives the design margin to survive a direct lightning surge or a severe alternator field decay event.
AEC-Q101 qualification and the 150°C junction limit
AEC-Q101 qualification certifies this part for automotive-grade stress screening: it has passed the temperature cycling, high-temperature reverse bias, and ESD robustness tests that consumer-grade parts skip. The DO-214AB (SMC) package footprint is standard for a 1500W TVS — the copper pad area on the PCB directly sets the thermal resistance. A 1-ounce copper pour under the cathode tab drops the junction-to-ambient thermal resistance by roughly 30% compared to a minimal pad, which matters when clamping repetitive pulses at elevated ambient temperatures.
Active production — no end-of-life watch needed
This is a standard part in the 1.5SMC series, so it is carried by multiple distribution channels and is not a single-source risk for a production BOM.