22V rail clamp — 24.4V breakdown floor
The minimum breakdown voltage is 24.4V, so the device does not start conducting until the rail exceeds that threshold — a 22V supply stays clean under normal operation. Peak pulse power is rated at 600W for a 10/1000µs waveform, with a clamping voltage of 39.4V at the peak pulse current of 15.2A. That clamp voltage is the ceiling the downstream circuitry sees during a surge event.
DO-214AA SMB — surface-mount footprint
The SMBJ (DO-214AA) supplier device package matches the JEDEC outline — no surprises for the pick-and-place or reflow profile.