1500W surge clamp in a DO-214AB footprint
The SMCJ15AE3/TR13 is a unidirectional Zener TVS diode rated for 1500W peak pulse power per the 10/1000 µs waveform. The 15V reverse standoff voltage means it sits across a 15V rail and stays transparent until a transient exceeds 16.7V breakdown. Clamping at 24.4V with a peak pulse current of 61.5A, this part handles the kind of surge that would otherwise punch through a downstream regulator or controller input.
Microchip lists the SMCJ15AE3/TR13 as Active. The base product number SMCJ15 covers the family; the suffix indicates the lead-free / RoHS-compliant finish.
Operating temperature and application fit
The part is marked for General Purpose applications — it is not AEC-Q101 qualified, so for automotive use a different suffix in the SMCJ family would be needed.