Active Zener TVS — 11V rail, 600W pulse
Its 12.2V minimum breakdown voltage and 20.1V maximum clamping voltage define the protection window for the downstream circuitry. Rated for 600W peak pulse power on the standard 10/1000µs waveform, the part can handle 29.9A peak pulse current before the junction temperature limit is reached. That pulse rating is the main derating axis — for shorter or repeated surges, the datasheet's power-derating curve applies.
Housed in the DO-214AA (SMB) surface-mount package, the device operates over -65°C to 150°C junction temperature. The SMB footprint is common across TVS families, so the land pattern is standard and well-supported by multiple manufacturers.
Sourcing — active, no end-of-life overhang
The buyer can commit the BOM line without planning a last-time-buy or searching for a drop-in replacement. The base product number SMBJ11 covers the whole voltage variant family; the suffix indicates lead-free / RoHS-compliant construction. No separate lead-free certification document is needed for standard compliance.