Taiwan Semiconductor Corporation BZW06-15BH

Overview

BZW06-15BH from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode with a 15V nominal breakdown voltage, 12.8V working stand-off voltage, and 25.2V clamping voltage at 24A peak pulse current. It features AEC-Q101 qualification, low dynamic impedance, and sub-1ps response time, designed for automotive-grade ESD and inductive load surge protection in power supply rails and signal lines.

For engineers reviewing the BZW06-15BH datasheet, BZW06-15BH pinout, BZW06-15BH application, or BZW06-15BH equivalent, key selection criteria include its DO-204AC (DO-15) package, unidirectional polarity, 175°C max junction temperature, and compliance with IEC 61249-2-21 halogen-free requirements - all critical for under-hood automotive electronics and industrial control systems.

Technical Context

The BZW06-15BH operates as a unidirectional avalanche diode, triggering at V_BR = 17.1–18.9V (tested at 1mA) to clamp transients while maintaining V_WM = 12.8V. Its low dynamic impedance ensures minimal voltage overshoot during 10/1000μs surges up to 600W.

Thermal performance is defined by R_θJL = 60°C/W and R_θJA = 100°C/W (L = 10mm), supporting operation from –55°C to +175°C. The device exhibits <1μA reverse leakage at V_WM, enabling low-power standby compatibility in always-on automotive modules.

Key Specifications

Pinout & Package

DO-204AC (DO-15) package: axial-leaded, molded epoxy case with cathode band marking for unidirectional polarity. 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 suppression applications.

Compared with SMBJ15A and P6KE15A, the BZW06-15BH uniquely combines DO-204AC through-hole compatibility, AEC-Q101 qualification, and verified 175°C operation - making it the only option for legacy automotive harness interfaces requiring mechanical robustness and high-temperature reliability.

Availability

BZW06-15BH is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, and LED driver overvoltage clamping requiring stable component supply across multi-year production cycles.

Supply support for BZW06-15BH 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, and rectifiers, with global distribution and AEC-Q101 validation capabilities.

The BZW06 series is engineered specifically for high-energy transient suppression in harsh automotive and industrial environments, emphasizing reliability under thermal cycling, mechanical vibration, and repetitive surge stress.

FAQ

What is the polarity configuration of the BZW06-15BH?

The BZW06-15BH is a unidirectional TVS diode, marked with a cathode band indicating the cathode terminal. It conducts only during positive transients on the cathode side relative to anode, making it suitable for DC rail protection where reverse voltage is not expected. This differs from bidirectional variants like BZW06-15B, which protect both polarities. The BZW06-15BH's polarity is confirmed by its V_BR specification and DO-204AC marking diagram.

Does the BZW06-15BH meet AEC-Q101 requirements?

Yes, the "H" suffix in BZW06-15BH explicitly denotes AEC-Q101 qualification per the manufacturer's ordering information and features list. It has passed stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing. This certification is essential for use in automotive powertrain, chassis, and body electronics where reliability under extended thermal and mechanical stress is mandatory. The BZW06-15BH data sheet version K2105 confirms this status.

What is the maximum clamping voltage of the BZW06-15BH at rated surge current?

The BZW06-15BH clamps to 25.2 V at a 10/1000μs peak pulse current of 24 A, as specified in the Electrical Characteristics table. This value represents the maximum voltage imposed on the protected circuit during standardized surge testing and is critical for ensuring downstream components remain within absolute maximum ratings. The clamping voltage is measured under controlled lab conditions and remains stable across the –55°C to +125°C operating range per characterization curves.

Can the BZW06-15BH be used in place of the BZW06-15 without modification?

No - the BZW06-15BH includes AEC-Q101 qualification and may have tighter process controls and screening compared to the standard BZW06-15, but both share identical electrical parameters and DO-204AC packaging. However, substituting BZW06-15 for BZW06-15BH in automotive applications voids AEC-Q101 compliance. The BZW06-15BH is not a drop-in replacement in safety-critical contexts unless the design documentation explicitly permits qualification downgrade.

What is the thermal resistance from junction to lead for the BZW06-15BH?

The junction-to-lead thermal resistance (R_θJL) of the BZW06-15BH is 60°C/W, as stated in the Thermal Performance section. This parameter governs heat transfer from the silicon die to the leads and directly impacts steady-state power dissipation capability - especially important when mounted on PCBs with limited copper area. For reliable operation at full 1.7W steady-state power, adequate lead length and board copper must be maintained per JEDEC standards. This value applies identically across the BZW06 series due to shared DO-204AC construction.