The 1.5SMC43AHM3/H: It is a unidirectional device with a single protection channel. This clamping voltage is the key parameter for selecting the downstream voltage rating of the protected circuit.
Automotive qualification and temperature range
The 1.5SMC43AHM3/H carries AEC-Q101 qualification, meaning it has passed the automotive-grade stress tests for discrete semiconductors including high-temperature reverse bias, temperature cycling, and ESD robustness. The device is rated for use in telecom applications per the specification, and its automotive grade also suits it for harsh industrial and transportation environments where reliability under surge conditions is required.