Vishay General Semiconductor - Diodes Division 5KP54-E3/54

Overview

5KP54-E3/54 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor (TVS) diode in P600 package, rated for 54 V stand-off voltage (V_WM), 60.0–66.3 V breakdown (V_BR), and 5000 W peak pulse power (10/1000 μs). It clamps transients to ≤87.1 V at 57.4 A and operates from –55 °C to +175 °C, protecting MOSFETs and ICs in automotive power supplies.

For engineers reviewing the 5KP54-E3/54 datasheet, 5KP54-E3/54 pinout, 5KP54-E3/54 application, or 5KP54-E3/54 equivalent, key selection factors include its unidirectional polarity, AEC-Q101 qualification, 5.0 μA max reverse leakage at 54 V, 3.5 V forward voltage at 100 A, and P600 package compatibility with high-surge industrial layouts.

Technical Context

This TVS diode uses a glass-passivated P600 chip junction optimized for fast response (<1 ns) and low incremental surge resistance, enabling effective clamping of inductive switching spikes and lightning-induced surges on DC power rails. Its 10/1000 μs waveform rating reflects standardized IEC 61000-4-5 surge immunity testing conditions.

The device is designed for non-repetitive surge suppression only, with thermal derating above 25 °C per Fig. 2 and maximum 0.01 % duty cycle for repetitive operation. It replaces crowbar circuits in switching power supply outputs by absorbing energy without shorting, allowing fuse/breaker coordination while maintaining system reset capability.

Key Specifications

Pinout & Package

5KP54-E3/54 is housed in a P600 molded epoxy package with matte tin-plated leads. The cathode is marked by a color band on the body; the anode and cathode terminals are axially oriented along the lead axis.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar transient voltage suppression applications.

Compared with SMBJ54A-E3/52 and 1.5KE56A, the 5KP54-E3/54 delivers 3.3× and 3.3× higher peak pulse power respectively, enabling protection in harsh automotive load-dump and industrial motor-drive environments where sustained energy absorption is critical.

Availability

5KP54-E3/54 is available at Aetrix Electronics and suitable for automotive ECU design, industrial motor control systems, telecom power rectification, and computer PSU overvoltage protection requiring stable component supply across extended production lifecycles.

Supply support for 5KP54-E3/54 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability and automotive qualification.

The 5KP series was developed specifically for high-energy transient suppression in automotive and industrial power systems, targeting replacement of crowbar circuits with robust, resettable clamping solutions.

FAQ

What is the clamping voltage of the 5KP54-E3/54 under maximum rated surge current?

The 5KP54-E3/54 exhibits a maximum clamping voltage (V_C) of 87.1 V when subjected to its rated peak pulse current (I_PPM) of 57.4 A using a 10/1000 μs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. The 5KP54-E3/54 maintains this clamping performance across its full operating temperature range.

Is the 5KP54-E3/54 suitable for automotive applications?

Yes, the 5KP54-E3/54 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its –55 °C to +175 °C operating junction temperature range, robust P600 package, and compliance with load-dump surge requirements (ISO 7637-2 Pulse 5a) make it appropriate for engine control units, body controllers, and ADAS power modules. The 5KP54-E3/54 meets all stress-test requirements defined in the AEC-Q101 standard.

What does the "E3/54" suffix indicate in 5KP54-E3/54?

The "E3" denotes RoHS-compliant, commercial-grade construction with JESD201 Class 1A whisker resistance, while "/54" specifies the preferred package code corresponding to the P600 outline and 13-inch paper tape and reel packaging (800 units per reel). This ordering format ensures consistent mechanical handling and automated placement compatibility. The 5KP54-E3/54 is supplied in this exact configuration for surface-mount or through-hole insertion processes.

How does the 5KP54-E3/54 differ from bidirectional TVS diodes?

The 5KP54-E3/54 is unidirectional and protects only against positive transients on the anode-to-cathode axis; it behaves as a standard diode in forward bias and avalanches in reverse. Bidirectional TVS devices provide symmetrical clamping for AC or floating-rail applications but sacrifice ~10 % clamping efficiency and lack AEC-Q101 qualification in equivalent power classes. The 5KP54-E3/54 is optimized for DC power rail protection where polarity is fixed.

Can the 5KP54-E3/54 replace a 1.5KE56A in an existing design?

Direct replacement of 1.5KE56A with 5KP54-E3/54 is mechanically feasible (both use P600 package) but requires layout review due to higher peak current (57.4 A vs. 16.1 A) and greater thermal dissipation. While V_WM and V_BR are closely matched, the 5KP54-E3/54's superior 5000 W rating may necessitate revised heatsinking or trace width. The 5KP54-E3/54 offers enhanced surge margin but is not a drop-in substitute without validation.