500W bidirectional TVS in DO-214AC
The 10V reverse standoff voltage lets it sit on a 10V rail without conducting; breakdown starts at 11.1V and clamping limits transients to 18.8V. The DO-214AC (SMA) package is a common surface-mount footprint for this power class, compatible with standard reflow profiles.
Clamping window and surge current
The 18.8V maximum clamping voltage at 26.6A peak pulse current defines the protection envelope: a 10V rail sees the clamp engage at 11.1V and hold the surge below 18.8V. The 500W peak pulse power is the energy-handling ceiling for a 10/1000 µs pulse — derate for shorter or repetitive events per the datasheet curve.
Surface-mount assembly to DO-214AC (SMA) — the cathode tab pad area on the PCB sets the thermal resistance; a larger copper island improves pulse derating.