400 W peak pulse, DO-214AC — field-swappable protection
The SMAJ6.5CA-13-F: That 400 W figure means it clamps a 35.7 A surge down to 11.2 V maximum — enough to protect a 6.5 V rail from ESD, load-dump, or inductive kickback without the part itself failing short. The DO-214AC (SMA) package is a standard surface-mount footprint you can swap on site with a soldering iron and basic ESD kit — no hot-air station required. The bidirectional channel means orientation is not critical; either way round clamps the same, which cuts down on placement errors during rework.
Protection window and thermal reach
Reverse standoff voltage is 6.5 V typical; breakdown starts at 7.22 V minimum. The clamping ceiling at 11.2 V gives you about 4 V of headroom above the rail before the TVS fully conducts — enough to ride through transients without nuisance triggering on normal ripple.
Diodes Incorporated lists this part as Active (current production). There is no last-time-buy clock ticking, no NRND flag — it is a standard catalog item you can quote against a BOM without worrying about an EOL notice next quarter. The base product number is SMAJ6.5, so the same die in unidirectional or different packaging variants shares the same TVS cell. If you need a different voltage or polarity, the SMAJ family covers the range without a footprint change.