What this TVS diode handles and where it fits
The 1N6143AUS is a bidirectional Zener TVS diode rated for 1500W (1.5kW) peak pulse power under the 10/1000µs waveform — that is the surge it can clamp before the junction gives up. Reverse standoff is 8.4V typical, so it sits on an 8V or 12V rail without leaking, and clamps at 15.6V maximum when the pulse hits. One bidirectional channel means it handles positive and negative transients on the same line, saving a diode pair on the board. The SQ-MELF (C) package is a surface-mount ceramic barrel; it reflows well but is a pain to hand-solder without a hot-air station, so plan for rework on a bench, not in the field.
Sourcing and lifecycle posture
That means the die and package are still in the fab and assembly flow, and the base product number 1N6143 is current. Sourced per RFQ against your BOM line — confirm the quantity and target ship window at quote time.
The 96.2A peak pulse current (Ipp at 10/1000µs) tells you the diode can sink nearly 100A for a millisecond without failing — useful for lightning surge or inductive kickback on a 24V industrial bus. But the 1500W rating is the headline: at 8.4V standoff, that is about 178A peak if the clamping voltage were lower, but the 15.6V clamp limits the actual current to 96.2A as specified. That 10.45V minimum breakdown voltage means the part starts conducting at around 10.5V, so a 12V rail with 10% tolerance (13.2V max) is safe — the diode stays off until a transient pushes past 10.45V. No power line protection — this is a signal or low-power rail TVS, not a mains-side suppressor.