48V rail protection in a rework-friendly package
The SMAJ48CA-13: The 400W peak pulse power rating tells you it handles a single high-energy event, not continuous dissipation — sized for surge protection on DC power inputs, signal lines, or low-voltage battery buses. The body is small enough that the pad layout doesn't trap heat under the part — lift the part, not the pad. Bidirectional means you don't worry about polarity; one part covers both positive and negative transients on a bipolar line or an AC-coupled signal.
Active production and sourcing posture
The base product number is SMAJ48, so the -13 suffix indicates tape-and-reel packaging.