Confirm the date code and AEC-Q101 traceability with the supplier before committing.
AEC-Q101 grade and automotive fit
This part carries AEC-Q101 qualification, meaning it has passed the stress tests for automotive-grade discrete semiconductors — temperature cycling, high-temperature reverse bias, and humidity. The -65°C to 150°C junction temperature range covers under-hood and engine-bay environments, but the 600W peak pulse rating must be derated above 25°C per the datasheet curve. For a 48V nominal rail, the 53V reverse standoff provides margin; the 58.9V minimum breakdown ensures the device starts clamping before the rail exceeds the downstream IC's absolute maximum.
Package and footprint — DO-214AA SMB
Surface-mount in DO-214AA (SMB) package. The SMB footprint is standard — 0.050-inch pitch, cathode band on the body. The 335pF capacitance at 1MHz is typical for a 600W Zener TVS; it does not load a 1MHz signal line but may affect high-speed data lines above 10MHz.