Package and temperature — DO-214AC, -55 to 150 °C
The SMAJ58A-13-F: Housed in the DO-214AC (SMA) package, surface-mount, with the supplier device package designated SMA. The junction temperature range spans -55 to 150 °C, covering industrial and automotive under-hood ambient without derating the 400 W peak pulse capability.
General-purpose rail — not for power-line primary protection
Marked for General Purpose applications. Power Line Protection is explicitly listed as No — this is a signal-line or DC-rail TVS, not a mains-entry protector. The single unidirectional channel clamps one polarity; for bidirectional or AC-coupled lines, a different part from the SMAJ family would be needed.