Clamping performance and breakdown margin
The 1.5SMC160H: That 230 V clamp is the voltage the downstream circuitry must survive without damage.
Automotive qualification and package fit
Housed in the DO-214AB (SMC) package, the same footprint as standard SMC diodes — the cathode band and package outline match the existing land pattern for a drop-in replacement in an automotive or telecom BOM.
