1500 W transient suppressor for 12 V rails
The 1.5SMC13A_R1_00001: With an 11.1 V reverse standoff voltage, it sits on a 12 V nominal rail and stays transparent until the line exceeds 12.4 V breakdown, then clamps at 18.2 V max while shunting 82 A peak pulse current.
Clamping voltage and the protection margin
The 18.2 V maximum clamping voltage at 82 A Ipp defines the voltage the downstream circuitry must survive. For a 12 V bus, this is a 52 % clamp-to-rail ratio — typical for a 1.5 kW TVS protecting a 12 V supply. The 82 A peak current rating at the 10/1000 µs waveform means the device handles a standard lightning surge (combination wave) without folding back. It is a unidirectional device with a single protection channel, so it clamps only one polarity. For AC lines or bidirectional protection, two devices or a bidirectional TVS are needed. The datasheet specifies no power line protection rating — this part is intended for DC signal and power rail transient suppression, not mains AC.
DO-214AB SMC footprint and temperature range
Housed in a DO-214AB (SMC) surface-mount package, the device has a standard JEDEC footprint with a cathode band on the body.