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Diodes Incorporated 1.5KE56CA-B — Circuit Protection

1.5KE56CA-B Diodes Inc TVS, 1500W Bidirectional, DO-201

MPN1.5KE56CA-B
Obsolete

Diodes Incorporated 1.5KE56CA-B Zener TVS Diode, 1500W Peak Pulse, 47.8V Reverse Standoff, 77V Clamp, Bidirectional, DO-201AA/DO-27 Axial, Bulk.

$0.6400Ref. price · indicative, final on quote
Diodes Incorporated 1.5KE56CA-B datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

1.5KE56CA-B specifications
ParameterValue
TypeZener
MountingThrough Hole
Voltage - breakdown53.2V
Voltage - clamping (Max) @ ipp77V
Voltage - reverse standoff47.8V
Current - peak pulse (10/1000μs)19.5A
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

Obsolete — sourcing through independent channels

Diodes Incorporated lists the 1.5KE56CA-B as Obsolete. Sourcing runs through independent surplus and broker channels; each lot is verified for traceability and confirmed against the BOM quantity at RFQ.

1500 W peak pulse — what the rating means for the protected rail

The 47.8 V reverse standoff voltage sets the maximum continuous DC rail the diode can sit across without conducting leakage current. Clamping occurs at 77 V maximum when the surge current reaches 19.5 A. The 53.2 V minimum breakdown voltage defines the threshold where the device starts to avalanche — the window between standoff and breakdown gives the designer margin for rail tolerance and ripple.

Bidirectional — one device for symmetrical signal pairs

This suits balanced data lines (RS-485, CAN, Ethernet) where the common-mode voltage swings above and below ground.

Frequently asked questions

What package does the 1.5KE56CA-B come in?

The 1.5KE56CA-B is supplied in a DO-201AA / DO-27 axial-lead through-hole package in Bulk format. The junction temperature range is -55 °C to +175 °C.