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Taiwan Semiconductor Corporation 1.5KE91CAHA0G — Circuit Protection

1.5KE91CAHA0G TVS Diode, 1.5 kW, 77.8 V Standoff, DO-201

MPN1.5KE91CAHA0G
Active

Taiwan Semiconductor 1.5KE series bidirectional TVS diode, 1500 W peak pulse power, 77.8 V reverse standoff, 125 V clamping, DO-201AA axial, AEC-Q101 automotive grade.

$0.5792Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

1.5KE91CAHA0G specifications
ParameterValue
TypeZener
Series1.5KE
MountingThrough Hole
Voltage - breakdown86.5V
Voltage - clamping (Max) @ ipp125V
Voltage - reverse standoff77.8V
Current - peak pulse (10/1000μs)12.6A
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-55°C ~ 175°C (TJ)
GradeAutomotive
PackageTape & Box (TB)
QualificationAEC-Q101
CaseDO-201AA, DO-27, Axial
Bidirectional channels1

Product details

1.5 kW bidirectional transient suppressor for 77.8 V rails

The 1.5KE91CAHA0G: The single bidirectional channel means a single device clamps both positive and negative surges — useful on AC-coupled or floating lines where polarity is not fixed.

Automotive qualification and temperature envelope

The DO-201AA (DO-27) axial-lead package is a through-hole form factor suited for point-of-entry protection on power feeds where board-space is not the constraint — the lead bend absorbs thermal cycling strain better than a surface-mount package.

Frequently asked questions

What automotive qualification does 1.5KE91CAHA0G carry?

It is AEC-Q101 qualified, meaning it meets the automotive-grade stress and reliability requirements for semiconductor devices used in vehicle electronics.