Taiwan Semiconductor Corporation P6KE150

Overview

P6KE150 from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode designed for robust overvoltage protection in DC power rails and signal lines. It features a 150V nominal breakdown voltage (VBR min/max: 135V–165V), 121V stand-off voltage (VWM), clamps to ≤215V at 2.9A peak surge current, and delivers sub-nanosecond response time (<1.0ps from 0V to VBR). It is used in automotive body control modules to safeguard CAN transceivers against load dump and ISO 7637-2 pulses.

For engineers reviewing the P6KE150 datasheet, P6KE150 pinout, P6KE150 application, or P6KE150 equivalent, key selection criteria include clamping voltage margin relative to protected IC's absolute maximum rating, thermal derating above 25°C ambient, junction temperature limits (−55°C to +175°C), and DO-204AC (DO-15) package compatibility with existing PCB footprints.

Technical Context

The P6KE150 operates as a silicon avalanche diode, leveraging controlled reverse-biased breakdown to shunt transient energy away from downstream circuitry. Its low dynamic impedance ensures stable clamping under fast-rising surges (10/1000μs waveform), while its <1μA reverse leakage at 121V supports low-power standby integrity.

Designed for unidirectional operation only, it exhibits polarity-sensitive cathode marking and requires correct orientation in series with the protected line. Its AEC-Q101 qualification (when ordered as P6KE150H) confirms suitability for automotive under-hood environments with extended thermal cycling and mechanical vibration stress.

Key Specifications

Pinout & Package

DO-204AC (DO-15) axial-leaded package with cathode band marking. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 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 P6KE150, SMAJ150A offers SMT integration at the cost of mounting flexibility, while 1.5KE150A provides greater thermal inertia in a physically larger axial package-making P6KE150 the optimal balance of proven DO-15 compatibility, automotive qualification path, and standardized surge performance.

Availability

P6KE150 is available at Aetrix Electronics and suitable for automotive electronics, industrial programmable logic controllers, and medical power supply designs requiring stable component supply with long-term lifecycle assurance.

Supply support for P6KE150 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, serving global automotive, industrial, and consumer markets since 1979.

The P6KE series belongs to TSC's high-reliability TVS portfolio engineered specifically for harsh-environment transient immunity-targeting ISO 7637-2, IEC 61000-4-4, and IEC 61000-4-5 compliance in automotive and industrial control systems.

FAQ

What is the maximum clamping voltage of the P6KE150 under rated surge conditions?

The P6KE150 clamps to a maximum of 215 V when subjected to its rated 2.9 A peak pulse current (IPPM) using the 10/1000 μs waveform. This value is measured at 25°C ambient and must be derated linearly above that temperature per Figure 2 in the official P6KE series datasheet. Designers must ensure this clamping voltage stays below the absolute maximum rating of the protected IC.

Is the P6KE150 suitable for bidirectional transient protection?

No, the P6KE150 is a unidirectional TVS diode and is not rated for bidirectional operation. Its electrical specifications-including breakdown voltage, clamping behavior, and polarity marking-are defined only for reverse-biased conduction. For bidirectional protection, select the P6KE150CA variant, which uses a back-to-back diode configuration and is explicitly characterized for symmetrical surge suppression in both directions.

Does the P6KE150 meet automotive qualification standards?

The base P6KE150 is not AEC-Q101 qualified; however, the P6KE150H variant-identifiable by the "H" suffix in the ordering code-is fully AEC-Q101 qualified for stress tests including temperature cycling, high-temperature operating life, and mechanical shock. Always specify P6KE150H for automotive under-hood or chassis-mounted applications requiring formal qualification evidence.

What is the thermal derating behavior of the P6KE150 above 25°C ambient?

The P6KE150's peak pulse power rating decreases linearly above 25°C ambient temperature, following the derating curve in Figure 2 of the datasheet: at 75°C, its 600W rating drops to approximately 420W, and at 125°C it falls to ~240W. This derating directly impacts surge survivability in high-temperature enclosures and must be factored into worst-case system-level surge testing plans for the P6KE150.

How does the P6KE150 compare to the 1.5KE150A in terms of physical compatibility?

The P6KE150 uses the DO-204AC (DO-15) package with 4.2 mm body diameter and 5.2 mm length, while the 1.5KE150A uses the larger DO-201AD (DO-27) package (5.6 mm diameter, 7.6 mm length). Though both are axial-leaded, they are not mechanically interchangeable-P6KE150 cannot be substituted into a 1.5KE150A footprint without pad modification, and vice versa. Always verify land pattern dimensions before replacement.