Skip to main content
Log in
Diodes Incorporated 1.5KE51CA-T — Circuit Protection

1.5KE51CA-T Diodes Inc TVS, 1500W Bidirectional, DO-201

MPN1.5KE51CA-T
Obsolete

Diodes Incorporated 1.5KE51CA-T Zener TVS, 1500W peak pulse power, 43.6V reverse standoff, bidirectional, DO-201AA axial lead, Tape & Reel.

$0.6400Ref. price · indicative, final on quote
Diodes Incorporated 1.5KE51CA-T datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

1.5KE51CA-T specifications
ParameterValue
TypeZener
MountingThrough Hole
Voltage - breakdown48.5V
Voltage - clamping (Max) @ ipp70.1V
Voltage - reverse standoff43.6V
Current - peak pulse (10/1000μs)21.4A
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

Obsolete TVS — sourcing the 1.5KE51CA-T

It is now listed as obsolete by the manufacturer. Availability and date-code spread are confirmed at RFQ against the specific lot.

Clamping parameters and the protection envelope

This defines the protection window for a 48V nominal bus — the TVS stays transparent below 43.6V and clamps transients before they exceed 70.1V. The single bidirectional channel means a single device protects both polarities on the same line, saving board space compared to back-to-back unidirectional parts.

Package and board fit

Housed in the DO-201AA (DO-27) axial-lead package, the 1.5KE51CA-T is a through-hole part. The DO-201 footprint is standard and mates with existing board layouts for this power class.

Frequently asked questions

What is the closest pin-compatible alternative to 1.5KE51CA-T?

A parametric search for a 1500W bidirectional TVS with 43.6V standoff in a DO-201 package will yield functional equivalents from other manufacturers, but pinout and footprint should be verified against the existing board layout.