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Littelfuse Inc. 1.5KE39C-B — Circuit Protection

Littelfuse 1.5KE39C-B Zener TVS, 1500W, 33.3V Standoff

MPN1.5KE39C-B
Obsolete

Littelfuse Inc. 1.5KE Series Zener TVS Diode, Bidirectional, 1500W Peak Pulse, 33.3V Standoff, 56.6V Clamping, DO-201AA Axial, Bulk.

$0.6300Ref. price · indicative, final on quote
Littelfuse Inc. 1.5KE39C-B datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

1.5KE39C-B specifications
ParameterValue
TypeZener
Series1.5KE
MountingThrough Hole
Voltage - breakdown35.15V
Voltage - clamping (Max) @ ipp56.6V
Voltage - reverse standoff33.3V
Current - peak pulse (10/1000μs)28.2A
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

What the 1500W peak-pulse rating means for your protection window

The 1.5KE39C-B: The single-channel device handles one protected line per package. The DO-201AA (DO-27) axial leaded package is a through-hole form factor with a standard 0.042-inch lead diameter — it fits existing PCB layouts for the 1.5KE family without a footprint change.

Obsolete — sourcing through surplus and broker channels

The 1.5KE series is widely produced, so cross-references from other brands (e.g., Vishay, onsemi) exist with similar voltage and package specs — but those are not formally listed as second sources by Littelfuse.

Frequently asked questions

How can I order the 1.5KE39C-B or check availability?

The 1.5KE39C-B is obsolete and sourced through independent distribution.

What is the closest pin-compatible alternative to the 1.5KE39C-B?

Other manufacturers (Vishay, onsemi) offer 1.5KE39-type bidirectional TVS diodes in the same DO-201AA package with similar voltage specs, but these are not formally listed as second sources. Confirm the voltage window and footprint match before substituting.