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Vishay General Semiconductor - Diodes Division 1.5KE91HE3/54 — Circuit Protection

Vishay 1.5KE91HE3/54 TVS, 1500W, 131V Clamp, DO-201AA

MPN1.5KE91HE3/54
Obsolete

Vishay General Semiconductor - Diodes Division, Automotive AEC-Q101 TransZorb® TVS, 1.5KE91HE3/54, 1500W peak pulse, 131V clamp, 73.7V standoff, DO-201AA axial, through-hole.

Vishay General Semiconductor - Diodes Division 1.5KE91HE3/54 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

1.5KE91HE3/54 specifications
ParameterValue
TypeZener
SeriesAutomotive, AEC-Q101, TransZorb®
MountingThrough Hole
Voltage - breakdown81.9V
Voltage - clamping (Max) @ ipp131V
Voltage - reverse standoff73.7V
Current - peak pulse (10/1000μs)11.5A
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-55°C~175°C(TJ)
PackageTape & Reel (TR)
ApplicationsAutomotive
CaseDO-201AA, DO-27, Axial
Unidirectional channels1

Product details

Obsolete — sourcing the 1.5KE91HE3/54 today

The 1.5KE91HE3/54 is marked Obsolete by Vishay.

Transient protection for 73.7 V rails

This is a unidirectional Zener-type TVS diode from Vishay's TransZorb® series, qualified to AEC-Q101 for automotive use. It clamps a 10/1000 µs surge to 131 V maximum at 11.5 A peak pulse current, absorbing 1500 W of peak pulse power. The 73.7 V reverse standoff voltage means it sits across a 72 V nominal bus without conducting leakage; breakdown starts at 81.9 V minimum.

Where it fits — under-hood and ECU protection

The DO-201AA axial package solders into through-hole boards — common in legacy ECU designs and aftermarket power-distribution retrofits. The AEC-Q101 qualification certifies it for automotive-grade reliability screening.

Frequently asked questions

What is the closest pin-compatible alternative to the 1.5KE91HE3/54?

A board spin may be required.