400 W bidirectional TVS for 24 V rail protection
The SMAJ26CA-13-F: With a 26 V reverse standoff voltage and a 28.9 V minimum breakdown, it clamps transients at 42.1 V maximum — sized for protecting 24 VDC power rails, signal lines, or I/O ports in general-purpose equipment. The 9.5 A peak pulse current rating (Ipp at 10/1000 µs) tells you the surge it can absorb before the clamping voltage rises above the 42.1 V ceiling. For a 24 V rail, that means a transient that would otherwise punch through a downstream regulator or ASIC gets shunted to ground within the TVS's response time.
Package and board-fit: DO-214AC (SMA)
Housed in the standard DO-214AC (SMA) surface-mount package, the SMAJ26CA-13-F mates with a 2.6 mm × 5.3 mm footprint. The SMA body is a common form factor for TVS diodes in this power class — the same land pattern serves many 400 W devices, so a last-minute BOM swap to a different brand or series usually fits without a board spin. No power line protection (the device is not designed for AC mains clamping), so keep it on the DC side of the power supply.