Zener transient suppressor in SQ-MELF
It delivers 500W peak pulse power per the 10/1000 µs waveform, with a minimum breakdown voltage of 37.1V and a maximum clamping voltage of 53.6V at the rated peak pulse current of 9.3A.
Parametric profile for protection design
The reverse standoff voltage is 29.7V typical, meaning the device does not conduct appreciably below that level — useful for protecting 28V rails or similar DC buses. With a single bidirectional channel and no power line protection feature, this part is best suited for signal or low-power DC bus clamping rather than AC mains suppression. The SQ-MELF package (B case) is a hermetic ceramic barrel — hand-solderable with care, but reflow or hot-air rework is typical.
The base product number is 1N6120. Sourced to order against BOM quantities — confirm the SQ-MELF footprint and the 29.7V standoff threshold match your protection target before committing.