130V rail protection in a small SMA package
The 144V minimum breakdown voltage gives a clean clamping window above the 130V rail, and the 231V maximum clamping at 2.2A peak pulse current keeps the protected node within safe limits during a surge event.
Breakdown and clamping window for a 130V bus
With a reverse standoff of 130V (typ) and a minimum breakdown of 144V, this part sits on a 130V DC rail without conducting during normal operation. The clamping voltage peaks at 231V at the rated 2.2A peak pulse current — that margin between the rail and the clamp limit is what absorbs transients without exceeding downstream component ratings.
Rework and footprint notes for the SMA package
The DO-214AC (SMA) package is a two-pad footprint with the cathode band clearly marked — pin 1 orientation is unambiguous under a microscope. The body is small enough that a standard hot-air rework station can lift and replace it without cooking adjacent components; the copper pad area under the cathode tab sets the thermal resistance, so keep the PCB land pattern per the datasheet recommendation to avoid derating the 500W pulse capability.