500W Zener TVS in a hermetic SQ-MELF
It clamps at 43.68V max with a reverse standoff of 22.8V, making it a direct fit for protecting 24V rails in avionics, industrial control, and military power buses where the hermetic SQ-MELF package is preferred over plastic for moisture resistance.
Clamping voltage and breakdown margin
Minimum breakdown voltage is 27.08V, so the part triggers before the rail exceeds that threshold. The 43.68V clamp at 11.4A peak pulse current gives a 20V margin above the 22.8V standoff — enough headroom for a 24V bus with 10% tolerance without nuisance triggering.
Active production, hermetic package
Microchip lists the 1N6117US as Active. The SQ-MELF, B package is a hermetic surface-mount ceramic body suited for high-reliability and extended temperature environments.