Transient suppressor for legacy through-hole designs
The 1N6380 is a unidirectional Zener TVS diode from onsemi's Mosorb™ series, rated for 1500W peak pulse power — enough to clamp transients from inductive loads or lightning-coupled surges on a 36V rail. Breakdown voltage starts at 42.4V minimum, clamping at 65.2V maximum at the peak pulse current Ipp. The 36V reverse standoff means it stays transparent on a nominal 36V bus, only conducting when the line exceeds that threshold. The axial package (through-hole) suits point-to-point wiring or legacy PCB layouts where surface-mount rework is impractical. Operating temperature spans -65°C to 175°C junction, covering engine-bay and outdoor telecom enclosures.
Obsolete — sourcing through independent channels
onsemi lists the 1N6380 as Obsolete. No official successor or cross-reference is published by the manufacturer. The axial package and 1500W power rating limit drop-in alternatives. A form-fit-function replacement would need matching 36V standoff, 65.2V clamp, and through-hole footprint — verify the voltage thresholds and pulse capability before substituting.
Voltage and power selection check
The 36V reverse standoff sets the maximum continuous DC voltage the protected line can carry without the diode conducting leakage. For a 36V nominal rail, this is a direct match — no derating margin needed for steady-state. Clamp voltage of 65.2V at Ipp defines the peak voltage the downstream circuitry must survive. If the load's absolute maximum rating is below 65V, this diode will not protect it — the clamp voltage exceeds the load's tolerance. The 1500W peak pulse rating assumes a 10/1000µs waveform. For shorter pulses (e.g. 8/20µs), the peak power capability is higher — but the datasheet's derating curve must be consulted for the actual pulse duration in your application.