Bidirectional 30V rail clamp in DO-214AA
Its 600W peak pulse power rating (10/1000 µs waveform) and 48.4V maximum clamping voltage at 12.4A peak pulse current define the protection envelope — enough margin for a 30V supply with typical 10–15% tolerance, but check your worst-case transient energy against the 600W limit.
The 30V reverse standoff voltage (working voltage) means the diode will not conduct at normal 30V DC operation. Breakdown starts at a minimum of 33.3V, and clamping is guaranteed at 48.4V max with a 12.4A peak pulse — so a 48V transient on the rail gets clipped to that level. The 600W peak pulse power is the energy-handling ceiling; if your transient exceeds that, you need a higher-power part or a series resistor to limit current.
Package and temperature range — board fit and environment
Housed in the DO-214AA (SMB) surface-mount package, the footprint is standard and widely supported by pick-and-place equipment.