1500W Zener TVS for 28V automotive rails
The 1.5SMC33AHM3/I: The 28.2V reverse standoff voltage means it sits across a 24V nominal rail without conducting leakage; the 31.4V minimum breakdown triggers avalanche clamping before the protected circuitry sees damage. AEC-Q101 qualification certifies it for automotive stress levels — temperature cycling, high-temperature reverse bias, and ESD robustness per the automotive discrete semiconductor standard.
Clamping voltage and pulse current
Maximum clamping voltage is 45.7V at the 32.8A peak pulse current. For a 24V system with a 36V load-dump transient, this TVS holds the line below the 50V abs-max of downstream DC-DC converters. Single unidirectional channel means one device protects one rail.
DO-214AB SMC package and rework
DO-214AB (SMC) package — the larger of the standard surface-mount TVS footprints. Polarity is marked by the cathode band — easy to verify under magnification before reflow. Supplied in Tape & Reel — compatible with standard pick-and-place.
Active production and sourcing
Listed as Active — Vishay continues to manufacture this part.