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Littelfuse Inc. 1.5KE250-B — Circuit Protection

Littelfuse 1.5KE250-B Zener TVS, 1.5kW, 214V Standoff

MPN1.5KE250-B
Obsolete

Littelfuse Inc. 1.5KE series Zener TVS diode, 1.5KE250-B, 1500W peak pulse power, 214V reverse standoff, 361.2V clamping, DO-201AA axial, bulk.

Littelfuse Inc. 1.5KE250-B datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

1.5KE250-B specifications
ParameterValue
TypeZener
Series1.5KE
MountingThrough Hole
Voltage - breakdown225V
Voltage - clamping (Max) @ ipp361.2V
Voltage - reverse standoff214V
Current - peak pulse (10/1000μs)4.4A
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

Package and board integration

Supplied in a DO-201AA (DO-27) axial-lead package, the 1.5KE250-B mounts through-hole. The DO-201 footprint is standard for 1.5 kW TVS diodes — the axial body and lead diameter handle the pulse current without trace lift-off, and the through-hole joint provides a lower thermal resistance path to the board copper than a surface-mount equivalent.

Littelfuse lists the 1.5KE250-B as obsolete. No official successor order code is recorded. Sourcing is through independent distribution — quantities are confirmed at RFQ, and the available stock is typically surplus or new-old-stock from authorized channels.