Zener TVS for 170V rail protection
The reverse standoff voltage is 170V, meaning the TVS draws negligible leakage below that level. That 115V window between standoff and clamp gives the designer room to place the TVS on a 170V bus without nuisance triggering, while still protecting downstream components rated for at least 304V.
Active production, sourced per RFQ
Microchip lists the SMAJ170CE3/TR13 as Active.
DO-214AC (SMA) footprint and temperature range
The DO-214AC (SMA) package is a standard surface-mount outline for TVS diodes, with a 0.050-inch (1.27 mm) lead pitch. No power line protection feature — this is a unidirectional/bidirectional clamp for signal or low-power DC rails, not AC mains.