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Vishay General Semiconductor - Diodes Division 1.5KE91CA-E3/54 — Circuit Protection

1.5KE91CA-E3/54 Vishay TVS, 1500W Bidirectional, 77.8V

MPN1.5KE91CA-E3/54
Active

Vishay General Semiconductor - Diodes Division TransZorb® TVS, Type Zener, Bidirectional, 1500W (1.5kW) Peak Pulse, 77.8V Standoff, DO-201AA Axial, 1.5KE91CA-/54.

$0.3531Ref. price · indicative, final on quote
Vishay General Semiconductor - Diodes Division 1.5KE91CA-E3/54 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

1.5KE91CA-E3/54 specifications
ParameterValue
TypeZener
SeriesTransZorb®
MountingThrough Hole
Voltage - breakdown86.5V
Voltage - clamping (Max) @ ipp125V
Voltage - reverse standoff77.8V
Current - peak pulse (10/1000μs)12A
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
Bidirectional channels1

Product details

TransZorb TVS, 1500 W bidirectional clamp

The 1.5KE91CA-E3/54: This is a Zener-type TVS in the DO-201AA (DO-27) axial-lead package, through-hole mounted, intended for general-purpose transient suppression on DC rails and signal lines that see bidirectional overvoltage events.

Clamp voltage and breakdown margin

The minimum breakdown voltage is 86.5 V, giving a 8.7 V margin above the 77.8 V standoff — the diode stays high-impedance under normal rail voltage and only conducts when the transient pushes past the breakdown knee. At the rated 12 A peak pulse current the clamp holds at 125 V maximum, which means a 48 V rail riding at 77.8 V sees the transient clipped to 125 V before the downstream silicon reaches its abs-max rating.

Sourcing and lifecycle posture

For a second-source hedge, parametric equivalents in the same DO-201AA package with matching standoff and peak power can be evaluated at quote time.

Frequently asked questions

How do I get current pricing and availability for 1.5KE91CA-/54?

Submit an RFQ with your target quantity. Pricing and lead time are confirmed at quote time through our sourcing desk — the part is actively produced, so lead times follow standard Vishay distribution cycles.