Active TVS for 7V rail protection
The SMBJ7.0A-13: With a peak pulse power rating of 600W (10/1000µs waveform) and a clamping voltage of 12V at 50A Ipp, it protects downstream silicon from surges up to that energy level without interrupting normal circuit operation.
Parametric guardrails for the BOM
Breakdown voltage min is 7.78V, so the device starts conducting above the 7V standoff level — the rail must stay below that during normal bias to avoid leakage. The 12V clamp at 50A means the protected node sees no more than 12V during a 10/1000µs surge event, which is within the abs-max rating of most 7V-rated ASICs and logic. Packaged in DO-214AA (SMB), the footprint matches standard SMB land patterns — no layout change needed if swapping between SMBJ-series voltage variants on the same BOM position.