TVS protection window for 12V/15V rails
The 1.5SMC18CAHM3_A/H: Its 15.3V reverse standoff voltage sits just above a nominal 12V or 13.8V automotive rail, clamping at 25.2V max — the clamping ceiling stays below the typical 30V abs-max of downstream 12V-rated ICs, giving the protection margin a BOM engineer needs without overspecifying to a higher-voltage part.
AEC-Q101 qualification and the TransZorb series
AEC-Q101 Grade qualified, this device is production-released for automotive stress and reliability screens — PPAP documentation is available from Vishay.
Package and reflow fit for DO-214AB
Housed in the DO-214AB (SMC) surface-mount package, the part mates with standard JEDEC footprint patterns for this body size — the cathode band is absent on a bidirectional device, so orientation is non-polarised. The -65°C to 150°C junction temperature range covers under-hood ambient plus self-heating at peak pulse; the wide thermal envelope suits both engine-bay and outdoor telecom enclosures.