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Littelfuse Inc. 1.5KE120-B — Circuit Protection

1.5KE120-B Littelfuse TVS Diode, 1500W, 102V Standoff

MPN1.5KE120-B
Obsolete

Littelfuse Inc. 1.5KE series TVS diode, Type Zener, 1.5KE120-B, 1500W peak pulse power, 102V reverse standoff, 173.25V clamp, DO-201AA axial, unidirectional.

Littelfuse Inc. 1.5KE120-B datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

1.5KE120-B specifications
ParameterValue
TypeZener
Series1.5KE
MountingThrough Hole
Voltage - breakdown108V
Voltage - clamping (Max) @ ipp173.25V
Voltage - reverse standoff102V
Current - peak pulse (10/1000μs)9.2A
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

Obsolete 1500W TVS — sourcing through independent channels

The 1.5KE120-B: Its 102V reverse standoff voltage means it stays transparent on a nominal 100V rail, clamping transients at 173.25V max before the surge current reaches 9.2A.

DO-201 axial package and temperature grade

Housed in a DO-201AA (DO-27) axial-lead package, the 1.5KE120-B is a through-hole device suited for point-to-point wiring or PCB mounting where the lead bend radius is controlled. The operating junction temperature range spans -55°C to 175°C, covering industrial and automotive under-hood thermal profiles. The single unidirectional channel protects one rail per device.

Frequently asked questions

What package does the 1.5KE120-B use?

It comes in a DO-201AA (DO-27) axial-lead through-hole package, supplier device package DO-201. The mounting type is through hole.