Active production — DO-13 bidirectional Zener TVS
Breakdown and clamping — what the 48.5V / 70.1V window means for your rail
With a reverse standoff voltage of 43V, this part protects a nominal 36V or 42V bus — the TVS stays transparent below 43V and starts conducting at 48.5V minimum. The clamping ceiling of 70.1V at 21.4A limits the peak voltage seen by downstream components during a 10/1000µs surge.
Sourcing posture — active, through-hole, no known replacement
It is and sourced through authorized and independent channels. No official successor or pin-compatible alternative is listed for this exact breakdown voltage and bidirectional configuration.