1500W Zener TVS — what it protects and where it fits
The 1N6286A is a unidirectional Zener TVS diode from onsemi's Mosorb™ series, designed to clamp voltage transients on a 36.8V nominal rail. With a peak pulse power rating of 1500W (1.5kW) and a clamping voltage of 59.3V at the peak pulse current, it protects downstream semiconductors from surges caused by inductive load switching, lightning, or ESD events. The 40.9V minimum breakdown voltage ensures the device starts conducting before the protected circuitry sees damaging overvoltage. The 36.8V reverse standoff voltage is the maximum continuous DC voltage the TVS can withstand without conducting — so this part suits 24V to 30V DC rails with margin.
onsemi lists the 1N6286A as Obsolete. For BOM lines that still specify this exact order code, supply is limited to existing stock in the independent channel. The DO-201AD axial package is a standard through-hole footprint, so board-level replacement during rework is straightforward with a soldering iron or hot-air station.
Temperature range and application environments
Rated for an operating junction temperature range of -65°C to 175°C, the 1N6286A can be deployed in industrial motor drives, outdoor telecom power supplies, and automotive underhood modules where ambient temperatures exceed 85°C. The wide range also covers cold-start conditions down to -65°C.