Skip to main content
Log in
Vishay General Semiconductor - Diodes Division 1.5KE39A-E3/73 — Circuit Protection

Vishay 1.5KE39A-E3/73 TransZorb TVS, 1500W, 33.3V Standoff

MPN1.5KE39A-E3/73
Active

Vishay General Semiconductor - Diodes Division TransZorb® series, TVS Zener, unidirectional, 1500W peak pulse power, 33.3V reverse standoff, DO-201AA axial, through hole, Tape & Box.

$0.3465Ref. price · indicative, final on quote
Vishay General Semiconductor - Diodes Division 1.5KE39A-E3/73 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

1.5KE39A-E3/73 specifications
ParameterValue
TypeZener
SeriesTransZorb®
MountingThrough Hole
Voltage - breakdown37.1V
Voltage - clamping (Max) @ ipp53.9V
Voltage - reverse standoff33.3V
Current - peak pulse (10/1000μs)27.8A
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-55°C~175°C(TJ)
PackageTape & Box (TB)
ApplicationsGeneral Purpose
CaseDO-201AA, DO-27, Axial
Unidirectional channels1

Product details

The 1.5KE39A-E3/73: The 1.5KE39A-/73 is a 1500 W unidirectional TransZorb TVS from Vishay, clamping transients on a 33.3 V nominal rail. The 53.9 V maximum clamping voltage at 27.8 A peak pulse current (10/1000 µs waveform) defines the voltage the downstream circuitry must survive — a 40 V-rated MOSFET on that rail has no margin past clamp. The 37.1 V minimum breakdown voltage means the device starts conducting before the rail exceeds the 33.3 V standoff, catching fast overvoltage events without nuisance triggering on normal ripple.

DO-201AA (DO-27) axial leaded package, through-hole mount. The 1.5KE footprint is standard across the series — the same PCB land pattern accepts any 1.5KE breakdown voltage variant, so a single board layout serves the full 1.5KE family.

Sourcing posture

The Tape & Box packaging (73 per box) suits both prototyping and production runs.

Frequently asked questions

What is the closest pin-compatible alternative to 1.5KE39A-/73?

Any 1.5KE-series TVS in the same DO-201AA package with the same 1.5KE footprint is pin-compatible — the land pattern is identical across the family. For the same 33.3 V standoff, the 1.5KE39A in a different packaging option (e.g., 1.5KE39A-/54) shares the same die and electrical specs.