Taiwan Semiconductor Corporation P6KE24A

Overview

P6KE24A from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode designed for primary-level overvoltage protection in DC power rails and signal lines. It features a 24V nominal breakdown voltage (VBR min/max = 22.8V/25.2V), 20.5V stand-off voltage (VWM), 33.2V clamping voltage at 19A peak surge current, and operates across -55°C to +175°C junction temperature range. It is commonly deployed in automotive body electronics and industrial power supply input stages.

For engineers reviewing the P6KE24A datasheet, P6KE24A pinout, P6KE24A application, or P6KE24A equivalent, key selection criteria include clamping performance under 10/1000μs surge, low leakage (<1μA @ 20.5V), AEC-Q101 qualification status, DO-15 mechanical compatibility, and thermal derating behavior above 25°C ambient.

Technical Context

The P6KE24A uses a silicon avalanche junction structure optimized for fast response (<1.0ps rise time from 0V to VBR) and low dynamic impedance to limit transient energy before downstream components are stressed. Its unidirectional configuration provides asymmetric conduction-blocking reverse voltage up to 20.5V while clamping positive surges above 22.8V.

Rated for 600W non-repetitive peak pulse power per 10/1000μs waveform, the device sustains 100A IFSM forward surge (8.3ms half-sine) and exhibits a VBR temperature coefficient of 0.094%/°C-enabling predictable voltage shift across operating temperature extremes.

Key Specifications

Pinout & Package

DO-204AC (DO-15) axial package with cathode band marking indicating the cathode terminal. Leads are tinned for standard reflow or hand-soldering per J-STD-002. Polarity is unidirectional: anode connects to protected circuit ground or low-side return; cathode connects to line or signal being protected.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMBJ24A and 1.5KE24A, the P6KE24A delivers identical clamping performance in a proven DO-15 through-hole package with AEC-Q101 availability, making it the preferred choice for automotive and industrial applications where mechanical robustness, thermal stability, and qualification compliance are prioritized over footprint miniaturization or extreme surge headroom.

Availability

P6KE24A is available at Aetrix Electronics and suitable for automotive body electronics, industrial power supply input stages, and LED driver overvoltage protection requiring stable component supply across multi-year production cycles.

Supply support for P6KE24A 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

Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs, with global distribution and AEC-Q101 qualification capabilities.

The P6KE series was developed specifically for robust, cost-effective transient protection in automotive and industrial environments where high surge immunity, wide temperature operation, and long-term reliability are mandatory.

FAQ

What is the clamping voltage of the P6KE24A at its rated peak surge current?

The P6KE24A has a maximum clamping voltage (VC) of 33.2V when subjected to its rated peak pulse current (IPP) of 19A under the standard 10/1000μs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream components experience no more than 33.2V during such a surge event. The P6KE24A maintains this clamping performance across its full operating temperature range.

Is the P6KE24A unidirectional or bidirectional, and how is polarity marked?

The P6KE24A is a unidirectional TVS diode, meaning it conducts only in reverse bias above its breakdown voltage and blocks voltage in the forward direction. Polarity is indicated by a cathode band on the DO-15 package-the banded end is the cathode and must be connected toward the line being protected, while the unmarked end (anode) connects to ground or reference. Bidirectional variants use "CA" suffixes (e.g., P6KE24CA).

Does the P6KE24A meet AEC-Q101 qualification, and which version carries this rating?

The P6KE24A itself is not AEC-Q101 qualified; however, the P6KE24AH variant-identical in electrical and thermal specifications-is explicitly qualified per AEC-Q101 Rev D for automotive applications. The "H" suffix denotes AEC-Q101 compliance, and this version undergoes stress testing including HTGB, HTRB, and temperature cycling. For automotive designs requiring qualification evidence, specify P6KE24AH instead of P6KE24A.

What is the maximum steady-state power dissipation (PD) for the P6KE24A at elevated ambient temperatures?

The P6KE24A has a steady-state power dissipation (PD) rating of 5W at TA = 75°C with 9.5mm lead lengths mounted on 5×5 mm copper pads. Above 25°C, PD must be linearly derated per Figure 2 in the datasheet-reaching zero at 175°C junction temperature. This derating curve ensures safe operation in high-ambient environments like engine compartments or enclosed industrial drives.

How does the P6KE24A compare to the P6KE24 in terms of breakdown voltage tolerance?

The P6KE24A offers tighter VBR tolerance (22.8V–25.2V, ±5%) compared to the standard P6KE24 (21.6V–26.4V, ±10%). This improved consistency reduces design margin uncertainty and enables more precise coordination with downstream overvoltage detectors or regulators. Both share identical package, surge rating, and thermal specs-but the "A" suffix denotes the tighter breakdown spread required for critical protection applications.