400W bidirectional TVS for 9V rails — DO-214AC footprint
The SMAJ9.0CA-13-F: Its 9V reverse standoff voltage means it sits across a 9V supply rail without conducting — only when a transient exceeds the 10V minimum breakdown does it start clamping, holding the line to 15.4V maximum at the rated 26A peak pulse current. Packaged in DO-214AC (SMA), it is a surface-mount device that reflows onto standard 0.050-inch pitch pads. The operating junction temperature range spans -55°C to 150°C, covering industrial cabinet ambient and under-hood automotive soak temperatures without derating the 400W pulse capability.
Active production — no end-of-life watch needed
The base product number is SMAJ9.0, and the -13-F suffix denotes the Tape & Reel (TR) or Cut Tape (CT) packaging options. General-purpose application classification means it is not qualified to AEC-Q101 automotive stress grades, but the temperature range and pulse rating suit many non-automotive designs where a 9V rail needs bidirectional clamping.
Bidirectional channel — one part clamps both polarities
A single bidirectional channel means this one device protects a signal or power line against positive and negative transients without needing two unidirectional TVS diodes back-to-back. On a 9V differential pair or a single-ended rail that can swing below ground, the SMAJ9.0CA-13-F provides symmetrical clamping at ±15.4V max. The 26A peak pulse current (10/1000µs) handles typical ESD and surge events per IEC 61000-4-5 on secondary-side electronics.