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Vishay General Semiconductor - Diodes Division 1.5KE400CA/54 — Circuit Protection

Vishay 1.5KE400CA/54 TransZorb TVS, 1500W, 548V Clamp

MPN1.5KE400CA/54
Obsolete

Vishay General Semiconductor - Diodes Division TransZorb® TVS, bidirectional, 1.5KE400CA/54, 1500W peak pulse, 548V clamping, DO-201AA axial, tape and reel.

Vishay General Semiconductor - Diodes Division 1.5KE400CA/54 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

1.5KE400CA/54 specifications
ParameterValue
TypeZener
SeriesTransZorb®
MountingThrough Hole
Voltage - breakdown380V
Voltage - clamping (Max) @ ipp548V
Voltage - reverse standoff342V
Current - peak pulse (10/1000μs)2.7A
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-55°C~175°C(TJ)
PackageTape & Reel (TR)
ApplicationsGeneral Purpose
CaseDO-201AA, DO-27, Axial
Bidirectional channels1

Product details

TVS diode, not a Zener regulator

The 1.5KE400CA/54 is a bidirectional TransZorb® transient voltage suppressor, not a Zener voltage regulator — the series name TransZorb is Vishay's trademark for TVS diodes designed to clamp fast overvoltage transients, not to provide steady DC regulation.

Protection threshold and operating range

The reverse standoff voltage is 342 V — the rail voltage below which the diode remains non-conducting in normal operation. Breakdown occurs at a minimum of 380 V, and clamping is specified at 548 V maximum under the 2.7 A peak pulse current. The operating junction temperature range spans -55°C to 175°C, covering military and industrial thermal environments without derating concerns at the extremes.

Obsolete — sourcing through independent channels

Available through independent surplus and broker channels. Quantities are lot-specific; each RFQ is confirmed against current inventory holdings. No pin-compatible replacement from Vishay is documented, so a board-level redesign may be required for long-term sustainment.

Frequently asked questions

Where can I buy 1.5KE400CA/54 and how do I get a price?

The 1.5KE400CA/54 is obsolete but available through independent distribution. Submit an RFQ for current availability and pricing — each lot is confirmed at quote time, and quantities are verified against on-hand surplus inventory.

What is the closest pin-compatible alternative to 1.5KE400CA/54 in this Circuit Protection family?

No official pin-compatible successor from Vishay is documented in the lifecycle data. The 1.5KE series includes other voltage variants, but a direct replacement with identical 342 V standoff and 548 V clamp is not listed as a cross-reference. A parametric search within the TransZorb family is recommended for new designs.