Voltage thresholds and clamping margin
The SMAJ14CA-13-F: Reverse standoff voltage is 14V — the line voltage this device protects sits at or below that level without leakage. Breakdown triggers at 15.6V minimum, and the clamping voltage peaks at 23.2V when the full 17.2A peak pulse current flows. That 9.2V window between standoff and clamp means a 14V rail sees protection before the downstream silicon's abs-max rating is exceeded. The 400W peak pulse power rating at 10/1000µs is the standard TVS metric — it defines the energy the device absorbs in a single surge event. For shorter transients like ESD (IEC 61000-4-2, ~1ns rise), the actual power capability is higher, but the 400W figure is the one to use for surge comparison across manufacturers.
Package, temperature range, and assembly fit
Housed in the DO-214AC (SMA) package, the SMAJ14CA-13-F is a surface-mount device with a low profile suited for automated pick-and-place. The supplier device package is also designated SMA — same footprint, different naming convention.