Skip to main content
Log in
Vishay General Semiconductor - Diodes Division 1.5KE300CA-E3/73 — Circuit Protection

1.5KE300CA-E3/73 Vishay TVS, 1500W, 256V Standoff, DO-201AA

MPN1.5KE300CA-E3/73
Obsolete

Vishay General Semiconductor TransZorb® TVS Diode, Bidirectional, 1.5KE300CA-/73, 1500W Peak Pulse, 256V Reverse Standoff, DO-201AA Axial.

Vishay General Semiconductor - Diodes Division 1.5KE300CA-E3/73 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

1.5KE300CA-E3/73 specifications
ParameterValue
TypeZener
SeriesTransZorb®
MountingThrough Hole
Voltage - breakdown285V
Voltage - clamping (Max) @ ipp414V
Voltage - reverse standoff256V
Current - peak pulse (10/1000μs)3.6A
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-55°C~175°C(TJ)
PackageTape & Box (TB)
ApplicationsGeneral Purpose
CaseDO-201AA, DO-27, Axial
Bidirectional channels1

Product details

Surge protection for a 256 V rail

The 1.5KE300CA-E3/73: Its 256 V reverse standoff voltage means it sits across a DC or AC line at that nominal voltage without conducting leakage current. When a surge exceeds the 285 V minimum breakdown threshold, the device clamps at 414 V maximum to shunt the energy away from the downstream circuit. The DO-201AA axial-lead through-hole package is the legacy footprint for this power class — the same body used across the 1.5KE series.

Lifecycle reality for the BOM line

Vishay lists the 1.5KE300CA-/73 as Obsolete in its lifecycle record. No official successor order code is provided by the manufacturer.

Frequently asked questions

Is the 1.5KE300CA-/73 unidirectional or bidirectional?

It is a single-channel bidirectional device, meaning it clamps both positive and negative surges symmetrically — suited for AC signal lines or bipolar DC rails.