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Diodes Incorporated 1.5KE120A-B — Circuit Protection

1.5KE120A-B Diodes Inc TVS Diode, 1500W, 102V Standoff

MPN1.5KE120A-B
Obsolete

Diodes Incorporated 1.5KE120A-B Zener TVS, 1500W peak pulse power, 102V reverse standoff, 165V clamping, DO-201AA/DO-27 axial, Bulk.

$0.7200Ref. price · indicative, final on quote
Diodes Incorporated 1.5KE120A-B datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

1.5KE120A-B specifications
ParameterValue
TypeZener
MountingThrough Hole
Voltage - breakdown114V
Voltage - clamping (Max) @ ipp165V
Voltage - reverse standoff102V
Current - peak pulse (10/1000μs)9.1A
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

What the 1500W pulse rating means for your protection budget

The 1.5KE120A-B: That 1500W figure is the peak power the device can absorb during a transient without failing — it's the energy-handling capacity, not a continuous rating. This means a 102V rail hit by a transient will be clamped to 165V, protecting downstream silicon rated for that margin.

Obsolete — sourcing through independent channels

Diodes Incorporated lists the 1.5KE120A-B as Obsolete. No official successor is listed, so the BOM line relies on existing inventory or a parametric substitute with the same DO-201 footprint.

Package and temperature range for through-hole designs

Housed in a DO-201AA / DO-27 axial-lead package (supplier device package DO-201), the diode is through-hole mounted — suited for point-to-point wiring or PCB insertion with standard solder wave or hand-soldering profiles.