400 W bidirectional TVS in a DO-214AC footprint
The SMAJ48CAQ-13-F is a 400 W peak pulse power Zener TVS diode from Diodes Incorporated, clamping at 77.4 V max with a 48 V reverse standoff. Its bidirectional single-channel design means it protects signal or power lines against both positive and negative transients without needing a polarity orientation on the board. Housed in the DO-214AC (SMA) package, it is a surface-mount device supplied on Tape & Reel — the -13-F suffix identifies the reel quantity. The SMA footprint is a common industry standard, so the layout matches many second-source parts in the same package.
Automotive-grade transient protection
Qualified to AEC-Q101, this TVS is rated for automotive applications where reliability screening and temperature cycling are mandatory. This gives a clear margin above the 48 V standoff rail — the device stays transparent during normal operation and only conducts when a transient exceeds the breakdown threshold.
For BOM placement, the DO-214AC package and AEC-Q101 grade are the key fit criteria.