Taiwan Semiconductor Corporation P6KE150H

Overview

P6KE150H from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power rails and signal lines. It features a 150V nominal breakdown voltage (VBR min/max: 135V–165V), 121V standoff voltage (VWM), clamps to ≤215V at 2.9A peak surge current, and delivers sub-nanosecond response (<1.0ps) for ESD and lightning-induced transients in automotive power systems.

For engineers reviewing the P6KE150H datasheet, P6KE150H pinout, P6KE150H application, or P6KE150H equivalent, this AEC-Q101-qualified DO-15 TVS offers verified clamping performance under 10/1000μs surges, low leakage (<1μA @ 121V), and robust junction temperature rating up to +175°C - critical for under-hood electronics, industrial power supplies, and lighting ballasts requiring IEC 61000-4-5 compliance.

Technical Context

The P6KE150H employs a planar passivated silicon junction optimized for fast avalanche response and stable clamping across temperature. Its unidirectional configuration enables asymmetric protection with cathode-anode polarity marking, supporting DC-biased circuits where reverse conduction must be blocked until VBR is exceeded.

Designed for single-pulse 600W surge handling per 10/1000μs waveform, it exhibits 0.108%/°C VBR temperature coefficient and maintains <1μA IR above 10V - ensuring minimal standby power loss while delivering predictable clamping voltage (VC = 215V @ IPP = 2.9A) during transient events.

Key Specifications

Pinout & Package

Package: DO-204AC (DO-15), axial leaded, epoxy-molded case with UL 94V-0 flammability rating and pure tin-plated leads compliant with J-STD-002 solderability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMBJ150A and 1.5KE150A, the P6KE150H provides optimal balance of AEC-Q101 qualification, low-clamp unidirectional protection in compact DO-15, and minimal leakage - making it preferred for space-constrained automotive DC rails where polarity-aware clamping is essential.

Availability

P6KE150H is available at Aetrix Electronics and suitable for automotive power management, industrial DC supply inputs, and LED driver protection requiring stable component supply and full AEC-Q101 compliance.

Supply support for P6KE150H 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, and signal conditioning devices.

The P6KE series belongs to TSC's high-reliability TVS portfolio engineered specifically for automotive-grade transient immunity and industrial surge resilience, with emphasis on AEC-Q101 validation and extended temperature operation.

FAQ

What is the key difference between P6KE150H and standard P6KE150?

The "H" suffix in P6KE150H denotes AEC-Q101 qualification, confirming full automotive stress testing including temperature cycling, humidity bias HAST, and mechanical shock. Standard P6KE150 lacks this certification and is intended for commercial/industrial use only. The P6KE150H retains identical electrical specs - VWM = 121V, VBR = 135–165V, VC = 215V - but adds traceability, lot-level qualification, and extended reliability reporting required for Tier 1 automotive supply chains.

Can P6KE150H be used in bidirectional signal protection?

No - P6KE150H is unidirectional and features a cathode band marking; it conducts only in reverse bias above VBR and blocks forward current beyond its VF (~1.5V). For bidirectional protection (e.g., RS-485, USB), a CA-suffixed part like P6KE150CA or a symmetric device such as SMBJ150CA is required. Using P6KE150H on AC-coupled lines risks forward conduction and improper clamping.

What is the maximum recommended PCB trace length for P6KE150H in surge protection layouts?

To maintain effective clamping, PCB traces between P6KE150H and protected node should be ≤5 mm total (anode + cathode paths combined), with direct connection to ground plane via multiple vias. Longer traces add inductance that elevates overshoot voltage (V = L·di/dt); for 2.9A/μs surge edge rate, every 10 nH adds ~2.9V overshoot - degrading the 215V VC spec. Layout best practice places P6KE150H adjacent to connector or IC power pins.

Does P6KE150H meet IEC 61000-4-5 Level 4 requirements?

Yes - P6KE150H's 600W rating at 10/1000μs waveform aligns with IEC 61000-4-5 Level 4 (4kV line-to-earth, 2kV line-to-line for AC mains; 1kV for DC ports). When applied with proper layout (low-inductance grounding, minimal trace length), it clamps transients to ≤215V, well below typical 30V–36V IC absolute maximum ratings. System-level compliance requires verification with source impedance and coupling network per standard.

How does junction temperature affect P6KE150H's clamping voltage?

P6KE150H's VBR has a +0.108%/°C temperature coefficient, meaning VBR increases by ~0.14V/°C rise from 25°C. At +125°C ambient (assuming 50°C rise), VBR shifts to ~155–175V, raising VC proportionally. This results in higher clamping voltage under thermal stress - critical for under-hood designs. Derating curves (Fig.2) show 600W capability drops to ~360W at +100°C ambient, requiring thermal design consideration for sustained surge duty.