Peak pulse capability — the spec that decides fit
The 1.5SMC82CAHE3/9AT: The 1.5 kW peak pulse rating (10/1000µs waveform) is the rating that matters for automotive load-dump and inductive kickback scenarios — the transient a 12V rail sees when an alternator field collapses or a motor driver turns off. At the clamping voltage of 113V, the peak pulse current is 13.3A — meaning the diode must survive that current impulse while keeping the clamped voltage below 113V at the board rail. The CA suffix marks a bidirectional part: it clamps both positive and negative transients, so it suits single-polarity rails where the protected node swings both directions during fault events.
Temperature grade and automotive qualification
AEC-Q101 qualification means it passed the automotive stress suite: humidity, temperature cycling, and surge life — the test sequence that separates a consumer-grade TVS from one that survives a vehicle lifetime.
Package and footprint for this power class
The DO-214AB (SMC) package is the standard medium-power TVS footprint — the cathode bar in the center of the package identifies the polarity end, and the wide pad underneath carries the thermal path from the junction to the board copper. Supplied on tape and reel — the standard automotive reel count of 3000 per reel suits high-volume assembly; confirm the reel orientation matches your pick-and-place tooling before committing to the BOM.
Sourcing posture
Active product status — the part is ordered to BOM quantity through independent distribution, with availability and lead time confirmed at RFQ.