Taiwan Semiconductor Corporation P6KE24CH

Overview

P6KE24CH from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode designed for primary-side overvoltage clamping in power supply input stages and automotive electronics. It features a 24V nominal breakdown voltage (VBR min/max = 21.6V/26.4V), 19.4V stand-off voltage (VWM), 34.7V maximum clamping voltage at 18A peak surge current, and AEC-Q101 qualification for automotive-grade reliability.

For engineers reviewing the P6KE24CH datasheet, P6KE24CH pinout, P6KE24CH application, or P6KE24CH equivalent, key selection criteria include its DO-204AC (DO-15) package compatibility, 175°C junction temperature rating, low dynamic impedance, sub-1ps response time from 0V to VBR, and compliance with IEC 61249-2-21 halogen-free requirements.

Technical Context

The P6KE24CH operates as a unidirectional avalanche diode, triggering conduction when reverse voltage exceeds its specified breakdown range (21.6–26.4V at 1mA test current). Its clamping action limits transient-induced voltage excursions to ≤34.7V at 18A (10/1000μs waveform), protecting downstream ICs and MOSFETs from ESD, lightning-induced surges, and inductive switching spikes.

It exhibits <1μA reverse leakage at 19.4V (VWM), a 0.094%/°C temperature coefficient of VBR, and is rated for non-repetitive peak pulse power of 600W. The device is constructed in a single-die DO-204AC (DO-15) package with pure tin-plated leads compliant with J-STD-002 solderability standards.

Key Specifications

Pinout & Package

Package: DO-204AC (DO-15), axial-leaded, epoxy-molded case with cathode band marking for unidirectional polarity. Meets UL 94V-0 flammability rating and JESD201 Class 2 whisker resistance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMAJ24A and 1.5KE24C, the P6KE24CH offers AEC-Q101 qualification and optimized 600W/34.7V clamping in the compact DO-15 form factor-making it preferred for space-constrained, automotive-qualified 24V systems where precise voltage limiting and regulatory compliance are critical.

Availability

P6KE24CH is available at Aetrix Electronics and suitable for automotive electronics, industrial programmable logic controllers, LED lighting drivers, and telecom power supplies requiring stable component supply and long-term lifecycle support.

Supply support for P6KE24CH 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power management, protection devices, and automotive-qualified components.

The P6KE series belongs to TSC's AEC-Q101-qualified TVS portfolio, engineered specifically for robust overvoltage protection in harsh automotive and industrial environments where reliability, thermal stability, and fast transient response are mandatory.

FAQ

What is the clamping voltage of the P6KE24CH under standard surge conditions?

The P6KE24CH has a maximum clamping voltage (V_C) of 34.7V at 18A peak pulse current with a 10/1000μs waveform. This value is measured per ANSI/IEEE C62.35 and represents the highest voltage the protected circuit will experience during a standardized surge event. The P6KE24CH maintains this clamping performance across its full operating temperature range and is validated for repeatable behavior in automotive-grade applications.

Is the P6KE24CH suitable for bidirectional transient protection?

No, the P6KE24CH is a unidirectional TVS diode, indicated by the "H" suffix denoting AEC-Q101 qualification and absence of "C" or "CA" in the part number. It conducts only in reverse bias above V_BR and must be installed with correct polarity-cathode toward the protected line. For bidirectional protection, select P6KE24C or P6KE24CA, which provide symmetrical clamping in both directions.

What does the "H" suffix signify in P6KE24CH?

The "H" suffix in P6KE24CH indicates AEC-Q101 qualification, confirming that the device has passed rigorous stress tests-including temperature cycling, high-temperature operating life, and mechanical shock-required for automotive electronic components. This distinguishes it from standard P6KE24C variants and validates its use in engine control, body electronics, and ADAS subsystems where reliability under extreme conditions is essential.

How does the P6KE24CH compare to the P6KE24A variant?

The P6KE24CH and P6KE24A share identical electrical specifications-including V_BR (22.8–25.2V), V_WM (20.5V), and V_C (33.2V at 19A)-but differ in qualification: P6KE24CH is AEC-Q101 qualified, while P6KE24A is not. Both use DO-204AC packaging and halogen-free construction, but only the P6KE24CH carries automotive-grade validation and UL file E326243 recognition for safety-critical designs.

What is the maximum junction temperature rating for the P6KE24CH?

The P6KE24CH has a maximum junction temperature (T_J) rating of +175°C, enabling reliable operation in high-ambient environments such as under-hood automotive locations or enclosed industrial enclosures. This rating is supported by its DO-204AC package thermal resistance and internal die design, and it remains valid across the full specified storage temperature range of −55°C to +175°C.