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Diodes Incorporated 1.5KE120A-T — Circuit Protection

1.5KE120A-T Diodes Inc TVS, 1500W, DO-201, Obsolete

MPN1.5KE120A-T
Obsolete

Diodes Incorporated 1.5KE120A-T unidirectional TVS Zener, 1500W peak pulse, 102V standoff, 165V clamp, 9.1A Ipp, DO-201AA/DO-27 axial, Tape & Reel.

Diodes Incorporated 1.5KE120A-T datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

1.5KE120A-T specifications
ParameterValue
TypeZener
MountingThrough Hole
Voltage - breakdown114V
Voltage - clamping (Max) @ ipp165V
Voltage - reverse standoff102V
Current - peak pulse (10/1000μs)9.1A
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-55°C~175°C(TJ)
PackageTape & Reel (TR)
ApplicationsGeneral Purpose
CaseDO-201AA, DO-27, Axial
Unidirectional channels1

Product details

What the ratings mean for the board

The 1.5KE120A-T is a 1500 W unidirectional TVS diode in the standard DO-201 axial package — the same footprint as the ubiquitous 1.5KE series, so it drops into existing board layouts without a pad spin. The 102 V reverse standoff means it sits across a 100 V nominal rail without conducting leakage; the 114 V minimum breakdown is where it starts clamping, and the 165 V maximum clamp at 9.1 A peak pulse (10/1000 µs waveform) defines the voltage the downstream circuitry sees during a surge.

Sourcing an obsolete protection diode

Available through independent surplus and broker channels.

Frequently asked questions

What is the closest pin-compatible alternative to the 1.5KE120A-T?

However, the 1.5KE series is a standard JEDEC DO-201 footprint shared by multiple manufacturers. A 1.5KE120A from Littelfuse or Vishay — same 102 V standoff, 1500 W rating, DO-201 package — is a direct form-fit-function replacement. Confirm the peak pulse current and clamp voltage match your surge requirement.

What compliance documentation does Diodes Incorporated provide for the 1.5KE120A-T?

For a part marked obsolete, compliance documentation may be limited to the original datasheet. Verify with the supplier at RFQ time.