Active production — 130V rail clamp for general-purpose protection
The SMAJ130A-13-F from Diodes Incorporated is an active-production Zener TVS diode in the SMAJ family, designed to clamp transients on 130V nominal rails. It's a unidirectional device — one channel, cathode to the protected line — with a peak pulse power rating of 400W (10/1000µs waveform).
Clamping voltage and surge current — what the ratings mean for your BOM
That 209V ceiling is what the downstream circuitry must survive — if your 130V rail components have a 200V abs-max rating, this TVS won't protect them. The DO-214AC (SMA) surface-mount package is the standard footprint for this power class — 400W peak pulse in a compact body. It's supplied on Tape & Reel (TR) or Cut Tape (CT), which covers both production reels and prototype quantities. No power line protection (the device is not rated for continuous overvoltage on mains); it's a transient suppressor for DC or low-frequency AC signal/power rails.