Clamping voltage and peak pulse capacity
The 1.5SMC8.2CAHM3/I is a bidirectional Zener-based TVS (Transient Voltage Suppressor) — the TransZorb® series from Vishay — rated 1500 W peak pulse at a 10/1000 µs waveform. At that same surge shape it absorbs a 124 A peak pulse current and clamps to a maximum 12.1 V, while the standoff sits typ at 7.02 V and the minimum breakdown threshold is 7.79 V. The 7.79 V minimum breakdown figure is what sets the protection threshold — the part turns on sharply above that voltage and the 12.1 V clamping ceiling is what the downstream circuit sees during a transient event. For a 7.02 V rail that sees the occasional inductive kick or ESD hit, that window is tight enough to protect sensitive semiconductors without wasting clamp current on normal operation.
Temperature grade and automotive qualification
The AEC-Q101 qualifier means the part has passed the automotive stress-grade qualification sequence — temperature cycling, high-temperature reverse bias, power temperature cycle — making it deployable in safety-critical and powertrain-adjacent circuits where an unmodified commercial-grade TVS is not acceptable.
The DO-214AB (SMC) footprint is the standard six-millimeter body for this power class. It mounts surface-mount, with the cathode bar oriented toward the protected rail. The Tape & Reel packaging suits high-volume pick-and-place lines — confirm the reel pitch matches the feeder width before loading. The base product number 1.5SMC8.2 keys into the series voltage selection — the 8.2 V standoff rating is the centre point for this variant, sitting between the lower-standoff and higher-standoff siblings in the same package.
The 1.5SMC8.2CAHM3/I is listed Active. For production ramp or multi-year service builds, specify the full BOM quantity and any date-code preference at RFQ so the quote reflects the correct lot profile.