185V rail clamp — what the ratings actually mean
The 1.5SMC220AS_R1_00001: With a 185V reverse standoff voltage, it sits across a 185V DC rail and stays transparent until a transient pushes past the 209V minimum breakdown threshold.
Where it goes on the board
Surface-mount DO-214AB (SMC) footprint — the same 2-lead tabbed package used across the 1.5kW TVS class, so the PCB land pattern is standard. No power-line protection feature (no internal filter); it is a pure clamp diode for transient suppression on signal or low-power DC buses.
Active — no lifecycle drama
Panjit lists this part as Active. No NRND flag, no last-time-buy window.
