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Littelfuse Inc. 1.5KE440CA-B — Circuit Protection

Littelfuse 1.5KE440CA-B TVS Diode, 1.5kW, 602V Clamp

MPN1.5KE440CA-B
Active

Littelfuse Inc. 1.5KE series bidirectional TVS diode, 1.5KE440CA-B, Zener type, 1500W peak pulse power, 376V reverse standoff, 602V clamping, DO-201AA axial package, bulk.

$0.5014Ref. price · indicative, final on quote
Littelfuse Inc. 1.5KE440CA-B datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

1.5KE440CA-B specifications
ParameterValue
TypeZener
Series1.5KE
MountingThrough Hole
Voltage - breakdown418V
Voltage - clamping (Max) @ ipp602V
Voltage - reverse standoff376V
Current - peak pulse (10/1000μs)2.5A
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-55°C~175°C(TJ)
PackageBulk
ApplicationsGeneral Purpose
CaseDO-201AA, DO-27, Axial
Bidirectional channels1

Product details

Surge protection window and clamping behaviour

The 1.5KE440CA-B: This protection window — from 376 V standoff to 602 V clamp — means the diode absorbs transients that exceed the normal line voltage without clipping the signal during normal operation, making it suited for 277 VAC or 300–350 VDC rail protection where the steady-state voltage stays below the standoff threshold.

Package, mounting, and thermal envelope

Housed in a DO-201AA (DO-27) axial-lead through-hole package, the 1.5KE440CA-B mounts directly into a PCB or terminal block with the leads forming the current path. The DO-201 body is the same footprint used across the 1.5KE series, so a single board layout serves multiple voltage variants in the family.

Frequently asked questions

What package does the 1.5KE440CA-B use?

It uses a DO-201AA (DO-27) axial-lead through-hole package, designated as the DO-201 supplier device package.