Active production — 1500W bidirectional TVS for 15 V rails
The 1.5SMC18CA R7G: The 17.1 V minimum breakdown voltage ensures the avalanche region is entered well before the clamp threshold, giving the downstream circuitry a defined protection window.
DO-214AB package and rework considerations
A 25 mm² copper pad on a 1 oz inner layer is a safe starting point for most layouts.
Sourcing and compliance posture
No official pin-compatible alternative or second-source cross-reference is documented by the manufacturer. For a BOM hedge, the 1.5SMC series shares the same DO-214AB footprint across its voltage range, so a different voltage grade could be substituted only if the circuit's standoff and clamp requirements are re-evaluated.