Taiwan Semiconductor Corporation P6KE36H

Overview

P6KE36H from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode designed for primary-side overvoltage protection in automotive and industrial power rails. It features a 36V nominal breakdown voltage (VBR min/max: 32.4V–39.6V), 29.1V stand-off voltage (VWM), clamps to ≤52.0V at 12.0A peak surge current, and operates within –55°C to +175°C junction temperature range.

For engineers reviewing the P6KE36H datasheet, P6KE36H pinout, P6KE36H application, or P6KE36H equivalent, this AEC-Q101 qualified DO-15 TVS diode delivers verified clamping performance under 10/1000μs transients, low dynamic impedance, and <1μA leakage above 10V - critical for ESD and load-dump protection in 12V/24V systems.

Technical Context

The P6KE36H uses a silicon avalanche junction structure optimized for fast response (<1.0ps rise time from 0V to VBR) and stable clamping under repetitive surge stress. Its unidirectional configuration provides polarity-sensitive protection with cathode-band marking and supports DC-biased circuits where reverse conduction must be blocked.

Thermal design is enabled by its DO-204AC (DO-15) package with 0.400g mass and UL 94V-0 molding compound, allowing 5W steady-state dissipation at 75°C ambient when mounted on 5×5 mm copper pads. Junction temperature derating follows Fig.2 per IEC 61000-4-5 compliance requirements.

Key Specifications

Pinout & Package

DO-204AC (DO-15) axial-leaded package with cathode band marking; leads are pure tin-plated and solderable per J-STD-002. Polarity is unidirectional: anode (unmarked end), cathode (banded end).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMBJ36A and 1.5KE36A, the P6KE36H offers AEC-Q101 qualification, optimal 600W/52.0V clamping balance for 12V/24V automotive rails, and axial lead compatibility with legacy through-hole assembly - making it the preferred choice for cost-sensitive, high-reliability OEM power protection.

Availability

P6KE36H is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, LED driver modules, and telecom power supplies requiring stable component supply and AEC-Q101 compliance.

Supply support for P6KE36H 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 devices, TVS diodes, rectifiers, and MOSFETs since 1979.

The P6KE series belongs to TSC's AEC-Q101 qualified transient voltage suppressor product line, engineered specifically for automotive and industrial environments demanding high surge robustness, low leakage, and long-term reliability under thermal cycling.

FAQ

What is the key difference between P6KE36H and standard P6KE36?

The "H" suffix in P6KE36H indicates AEC-Q101 qualification - meaning it has undergone extended reliability testing including temperature cycling, highly accelerated life testing (HALT), and ESD validation per automotive standards. The base P6KE36 lacks this qualification and is intended for commercial/industrial use only. Both share identical electrical specs (VBR, VWM, VC), but P6KE36H is certified for under-hood automotive deployment where P6KE36 is not.

Does P6KE36H support bidirectional transient suppression?

No, P6KE36H is strictly unidirectional. Its cathode-band marking and internal structure allow conduction only during positive overvoltage on the cathode side. For bidirectional protection, TSC offers P6KE36CA (with "CA" suffix), which uses a back-to-back diode configuration and supports symmetrical clamping in both polarities - but P6KE36H does not provide that capability.

What is the maximum peak surge current P6KE36H can handle?

P6KE36H handles up to 12.0A peak surge current (IPP) under the standard 10/1000μs waveform, corresponding to its 600W peak pulse power rating. This value is confirmed in the Electrical Specifications table at TA = 25°C. Derating applies above 25°C ambient per Fig.2 in the datasheet - e.g., at 75°C, IPP reduces to approximately 8.4A to maintain safe junction temperature.

Is P6KE36H compatible with lead-free reflow soldering processes?

Yes, P6KE36H features pure tin-plated leads compliant with J-STD-002 for solderability, and its DO-204AC package withstands peak reflow temperatures up to 260°C for 10 seconds. However, due to its axial-leaded through-hole construction, it is typically wave-soldered or hand-soldered rather than reflowed; for automated assembly, ensure adequate preheat and dwell time to avoid thermal shock to the epoxy body.

How does P6KE36H compare to P6KE36A in terms of clamping performance?

P6KE36H and P6KE36A share identical clamping characteristics: both have VC ≤ 49.9V at 12.6A (per datasheet Table, P6KE36A row). The "A" suffix denotes tighter VBR tolerance (34.2V–37.8V vs. 32.4V–39.6V for P6KE36H), but P6KE36H adds AEC-Q101 qualification. So while clamping voltage is nearly identical, P6KE36H is the qualified automotive variant - not a performance upgrade, but a reliability and compliance upgrade.