Active production — DO-13 bidirectional Zener TVS
The 1N6056A: The DO-13 through-hole package handles the thermal mass needed for repetitive surge events — the junction is rated from -55°C to 175°C, which covers military-temperature-range environments like avionics power buses and downhole instrumentation.
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. Bidirectional means it clamps both positive and negative transients symmetrically, so no series blocking diode is needed on AC or bipolar DC rails.
Sourcing posture — active, through-hole, no known replacement
It is and sourced through authorized and independent channels. The DO-13 package is a standard through-hole footprint; confirm the BOM position count and polarity orientation before committing. No official successor or pin-compatible alternative is listed for this exact breakdown voltage and bidirectional configuration.