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Diodes Incorporated 1.5KE300A-B — Circuit Protection

1.5KE300A-B Diodes Inc TVS, 1.5kW, 256V standoff, DO-201

MPN1.5KE300A-B
Obsolete

Diodes Incorporated 1.5KE300A-B Zener TVS, 1500W peak pulse power, 256V reverse standoff, 414V clamping, DO-201AA/DO-27 axial, Bulk.

$0.4451Ref. price · indicative, final on quote
Diodes Incorporated 1.5KE300A-B datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

1.5KE300A-B specifications
ParameterValue
TypeZener
MountingThrough Hole
Voltage - breakdown285V
Voltage - clamping (Max) @ ipp414V
Voltage - reverse standoff256V
Current - peak pulse (10/1000μs)5A
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-55°C~175°C(TJ)
PackageBulk
ApplicationsGeneral Purpose
CaseDO-201AA, DO-27, Axial
Unidirectional channels1

Product details

What the ratings mean for your BOM

The 1.5KE300A-B is a 1500 W peak pulse power Zener TVS diode in a DO-201 axial package.

Diodes Incorporated lists the 1.5KE300A-B as Obsolete. For a BOM that still calls out this exact order code, the procurement path is a spot-market search. The 1.5KE300 family (base product number 1.5KE300) includes other standoff voltages, but a pin-compatible direct replacement with the same 256 V standoff and 1500 W rating would require a parametric cross — no single official second source is listed.

The DO-201AA / DO-27 axial leaded package (supplier device package DO-201) is a through-hole form factor suited for point-to-point wiring or PCB mounting with 0.042-inch diameter leads. The axial body is 9.1 mm long — the lead spacing on the PCB must accommodate the body length plus the bend radius for a flush mount.