Where this TVS fits on the board
The SMAJ22CA-13: Bidirectional construction (single channel) means it clamps equally in both polarities — no orientation concern on AC-coupled or bipolar signal lines. Breakdown voltage min is 24.4V, clamping at 35.5V with a peak pulse current of 11.2A.
Lifecycle reality — obsolete, but findable
Operating temperature range spans -55°C to +150°C junction, covering industrial and automotive ambient conditions where the part was originally designed in. The DO-214AC footprint is shared across the SMAJ family, so a board respin to a newer active TVS with the same package is straightforward if volume warrants.