1500 W Zener TVS in DO-214AB
The 1.5SMC11A_R1_00001: It clamps transients at 15.6 V max while carrying 96 A peak pulse current, making it a straightforward fit for protecting a 9.4 V rail from surges.
Clamping and breakdown thresholds
Reverse standoff voltage is 9.4 V typical — the rail voltage the part sits across without conducting. Breakdown starts at 10.5 V min, and clamping maxes at 15.6 V at the rated 96 A peak pulse current. That 6.2 V window between standoff and clamp tells you the rail sees a hard ceiling during a surge event. The 1500 W rating holds for a 10/1000 µs exponential waveform — the standard telecom and industrial surge shape. For shorter pulses the part absorbs more energy; for longer ones, derate. No power line protection built in, so it is for signal or low-voltage DC rails, not mains. The DO-214AB (SMC) package handles the 1.5 kW dissipation through the board copper — the tab is the cathode and the thermal path.
Sourced through independent distribution channels. The DO-214AB footprint is standard, so a BOM swap to a same-package alternative from another vendor is a parametric match, not a board spin.