The 1.5SMC20AS_R1_00001: It clamps a 17.1 V reverse standoff voltage to 27.7 V maximum at a peak pulse current of 54 A. Housed in the DO-214AB (SMC) surface-mount package, it operates across -55°C to 150°C junction temperature — the full industrial and automotive ambient range.
Clamping voltage and the protection margin
The 27.7 V clamping voltage at 54 A peak pulse current sets the upper limit the protected circuitry must survive. The 1500 W peak pulse rating at 10/1000 µs defines the energy-handling capability — a 54 A transient lasting 1 ms is within the safe operating area.
Active production, single-channel unidirectional
The base product number is 1.5SMC, a standard TVS family available in multiple standoff voltages.