Bidirectional TVS Zener — what the clamping spec means for your circuit
The 1.5SMCJ13CA_R1_00001 is a unidirectional TVS Zener — the "CA" suffix confirms bidirectional polarity handling across a single channel. Peak pulse power is rated at 1500 W (1.5 kW) for that same 10/1000 µs surge waveform. The 1.5 kW figure is the headroom the clamping action has to absorb and dissipate as heat — the gap between 13 V standoff and 21.5 V clamping at 69.7 A peak is where that energy gets burned off. A 1.5 kW SMC-device TVS sitting behind a supply rail or long signal run is the first line of defence against lightning-induced transients or inductive kickback on the line.
Sourcing and production status
Panjit International Inc. lists this part as Active — it is in normal production and available through independent distribution. Confirm the exact reel or cut-tape quantity at RFQ; the tape-and-reel packaging is standard for SMC devices but lot-level availability varies by distributor.