110V rail clamp — 177 V ceiling, 400 W pulse rating
The SMAJ110A-13-F: Its 122 V minimum breakdown voltage means the avalanche triggers before the downstream circuitry sees a damaging spike, and the 177 V maximum clamping voltage at 2.3 A peak pulse current (10/1000 µs waveform) sets the hard ceiling the protected line will experience during a surge. Rated for 400 W peak pulse power, this device handles the energy from a typical industrial transient — a motor drive cable discharge or an inductive load turn-off — without exceeding its junction temperature limit of 150 °C. The -55 to 150 °C operating range covers most indoor and outdoor equipment, including unheated enclosures and engine-bay-adjacent electronics.
Package and board-fit — DO-214AC (SMA)
The DO-214AC (SMA) surface-mount package is the standard footprint for TVS diodes in this power class. The SMA body measures roughly 4.6 mm × 2.8 mm, with a gull-wing lead form that self-centers during reflow. The cathode band marks the unidirectional orientation — the anode connects to the protected rail, the cathode to ground, so the device clamps positive transients above the breakdown threshold. The reel quantity typically suits medium-to-high-volume production runs; for prototype or low-volume builds, cut-tape or loose-piece options are available at quote.
Active production — no obsolescence risk
Diodes Incorporated lists the SMAJ110A-13-F as Active. No end-of-life notice, no last-time-buy window, and no successor part number has been issued. Because it is a standard-product TVS diode in a high-volume package family (DO-214AC), supply continuity is stable across multiple distribution channels.