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Vishay General Semiconductor - Diodes Division 1.5KE27A-E3/54 — Circuit Protection

1.5KE27A-E3/54 Vishay TVS, 1500W, 23.1V Standoff, DO-201

MPN1.5KE27A-E3/54
Active

Vishay General Semiconductor - Diodes Division TransZorb® TVS, 1.5KE27A-/54, Zener type, unidirectional, 1500W peak pulse, 23.1V reverse standoff, DO-201AA axial through-hole.

$0.3246Ref. price · indicative, final on quote
Vishay General Semiconductor - Diodes Division 1.5KE27A-E3/54 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

1.5KE27A-E3/54 specifications
ParameterValue
TypeZener
SeriesTransZorb®
MountingThrough Hole
Voltage - breakdown25.7V
Voltage - clamping (Max) @ ipp37.5V
Voltage - reverse standoff23.1V
Current - peak pulse (10/1000μs)40A
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-55°C~175°C(TJ)
PackageTape & Reel (TR); Cut Tape (CT)
ApplicationsGeneral Purpose
CaseDO-201AA, DO-27, Axial
Unidirectional channels1

Product details

1500W transient suppressor for 24V rails

The 1.5KE27A-E3/54: The 1.5KE27A-/54 is a Vishay TransZorb TVS — a unidirectional Zener-type transient suppressor that clamps a 40 A peak pulse (10/1000 µs waveform) at 37.5 V, absorbing 1500 W of peak pulse power. Its 23.1 V reverse standoff voltage means the protected DC rail must stay below that level during normal operation; the device starts conducting above the 25.7 V minimum breakdown threshold.

Through-hole axial package and mounting

Housed in a DO-201AA / DO-27 axial-lead package, this is a through-hole component — it requires a drilled PCB hole and wave or hand soldering, not reflow.

Compliance and documentation

Rated for general-purpose circuit protection — not certified to automotive AEC-Q101 or UL 1449 on the record; intended for DC signal and low-voltage power rail transient suppression, not AC mains.

Frequently asked questions

What does the 1500W peak pulse rating mean in practice?

The 1500 W rating applies to a 10/1000 µs exponential waveform. The device clamps a 40 A pulse at 37.5 V, so the protected circuit must survive that clamped voltage for the pulse duration.

What is the 1.5KE27A-/54's listed type and series?

Listed as Zener type, unidirectional, from the Vishay TransZorb series.