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Diodes Incorporated 1.5KE18A-T — Circuit Protection

1.5KE18A-T Diodes Inc Zener TVS, 1500W, 15.3V, DO-201

MPN1.5KE18A-T
Obsolete

Diodes Incorporated 1.5KE18A-T Zener TVS diode, 1500W peak pulse power, 15.3V reverse standoff, 25.2V clamping, DO-201AA/DO-27 axial, Tape & Reel.

Diodes Incorporated 1.5KE18A-T datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

1.5KE18A-T specifications
ParameterValue
TypeZener
MountingThrough Hole
Voltage - breakdown17.1V
Voltage - clamping (Max) @ ipp25.2V
Voltage - reverse standoff15.3V
Current - peak pulse (10/1000μs)59.5A
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

TVS diode for 15.3V rail clamping

The 1.5KE18A-T: It clamps transients on a 15.3V nominal rail to 25.2V maximum, handling up to 59.5A peak pulse current. The 17.1V minimum breakdown voltage ensures the device triggers before the downstream silicon sees overvoltage, while the 25.2V clamp holds the spike below the typical 30V abs-max of a 24V-rated IC.

Housed in a DO-201AA/DO-27 axial leaded package (DO-201 supplier device package), the 1.5KE18A-T mounts through-hole. The axial leads require a hole diameter of about 1.0 mm on the PCB; the body sits above the board, so the lead bend radius must clear adjacent components.

Lifecycle and procurement reality

Diodes Incorporated lists the 1.5KE18A-T as Obsolete. Sourced through independent distribution channels. Availability and pricing confirmed per RFQ — each lot is date-code and marking verified before shipping.

Frequently asked questions

What is the closest pin-compatible alternative to the 1.5KE18A-T?

A functionally similar TVS with the same DO-201 package, 1500W rating, and 15.3V standoff would need to be selected from other manufacturers' portfolios — the BOM position should be reviewed for voltage and clamping specs before substituting.

How do I get current pricing and availability for the 1.5KE18A-T?

Submit an RFQ through this listing. Lot traceability and date-code verification are included.