SMA footprint, 400W surge, bidirectional
The SMAJ90CA-13-F: It clamps at 146V max and protects a 90V nominal rail — the reverse standoff voltage matches the DC bus it guards. Packaged in a DO-214AC (SMA) surface-mount footprint, it is suited for automated reflow assembly on standard PCB layouts. The bidirectional channel means no polarity orientation — one part covers both signal polarities on AC or dual-rail lines.
Clamping voltage and breakdown margin
Minimum breakdown voltage is 100V, while the clamping voltage caps at 146V at 2.7A peak pulse current. The 46V window between standoff and clamp gives the downstream circuit headroom — a 90V supply sees the TVS remain non-conducting until the surge pushes past 100V. The 400W rating holds across this band with derating above 25°C per the standard power-temperature curve.
Automotive-grade and compliance posture
No power line protection rating is listed, meaning this device is intended for signal and low-power rail clamping, not mains or high-energy surge paths.