Taiwan Semiconductor Corporation BZW06-128

Overview

BZW06-128 from Taiwan Semiconductor is a unidirectional 600W Transient Voltage Suppressor (TVS) diode with a 128V working stand-off voltage, 143–158V breakdown range at 1mA, and 207V clamping voltage at 2.9A (10/1000μs). It features low dynamic impedance, <1μA reverse leakage above 10V, and AEC-Q101 qualification for automotive-grade surge protection in power supply rails and interface lines.

For engineers reviewing the BZW06-128 datasheet, BZW06-128 pinout, BZW06-128 application, or BZW06-128 equivalent, this device serves as a robust, DO-15 packaged transient suppressor for high-energy ESD and inductive switching events - especially where fast response (<1ps), stable thermal performance (T_J up to 175°C), and RoHS/halogen-free compliance are required.

Technical Context

The BZW06-128 operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its V_BR (143–158V), clamping transients to ≤207V at 2.9A (10/1000μs) and ≤265V at 15A (8/20μs). Its junction-to-lead thermal resistance is 60°C/W, enabling reliable power dissipation under pulsed conditions.

Designed for single-pulse, non-repetitive surge suppression, it supports peak forward surge current of 100A (8.3ms half-sine), operates from −55°C to +175°C, and exhibits a temperature coefficient of 0.108%/°C for V_BR, ensuring predictable voltage drift across temperature.

Key Specifications

Pinout & Package

Package: DO-204AC (DO-15), axial-leaded, epoxy-molded case with cathode band marking for unidirectional polarity. Leads are pure tin-plated and solderable per J-STD-002.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMBJ120A and P6KE130A, the BZW06-128 offers precise 128V stand-off matching common 12V-system derating margins, AEC-Q101 validation for automotive deployment, and optimized clamping (207V) that reduces stress on downstream 150V-rated components - making it ideal for mission-critical power rail protection where reliability and specification alignment are essential.

Availability

BZW06-128 is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interfaces, LED driver circuits, and PLC digital I/O modules requiring stable component supply and long-term lifecycle support.

Supply support for BZW06-128 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, rectifiers, and MOSFETs, with global distribution and AEC-Q101-compliant product lines.

The BZW06 series is designed specifically for high-energy transient suppression in automotive and industrial systems, emphasizing robustness, thermal stability, and compliance with stringent reliability standards like AEC-Q101 and RoHS.

FAQ

What is the maximum clamping voltage of the BZW06-128 under standard 10/1000μs surge conditions?

The BZW06-128 has a maximum clamping voltage (V_C) of 207 V when subjected to a 2.9 A peak pulse current with a 10/1000μs waveform. This value is measured per JEDEC standards and ensures predictable overvoltage limiting for protected circuits. The BZW06-128 maintains this clamping performance across its specified operating temperature range and is validated in production testing per Taiwan Semiconductor's K2105 revision.

Is the BZW06-128 suitable for automotive applications?

Yes, the BZW06-128 is AEC-Q101 qualified, confirming its suitability for automotive applications including engine control units, body control modules, and infotainment power supplies. Its operating junction temperature range (−55°C to +175°C), robust surge rating (600W), and DO-15 mechanical construction meet automotive environmental and reliability requirements. The BZW06-128 is explicitly listed in TSC's AEC-Q101 qualified portfolio under version K2105.

What is the reverse leakage current of the BZW06-128 at its working stand-off voltage?

The BZW06-128 exhibits a maximum reverse leakage current (I_R) of 1 μA when biased at its rated working stand-off voltage of 128 V. This low leakage ensures minimal power loss and avoids interference with sensitive analog or low-power circuits. The BZW06-128 achieves this performance across its full operating temperature range and is verified per the electrical characteristics table in the official K2105 datasheet.

Does the BZW06-128 have bidirectional variants, and how do they differ?

Yes - the BZW06-128B is the bidirectional variant of the BZW06-128. While both share identical V_WM (128 V), V_BR (143–158 V), and P_PK (600 W), the BZW06-128B provides symmetrical clamping for AC or floating signals and has a 5 ns response time (vs. <1 ps for unidirectional). The BZW06-128 itself is unidirectional and marked with a cathode band; its pinout and application topology differ accordingly.

What is the thermal resistance from junction to lead for the BZW06-128, and why does it matter?

The BZW06-128 has a junction-to-lead thermal resistance (R_θJL) of 60°C/W, indicating efficient heat transfer from the silicon die to the leads during transient events. This parameter directly impacts surge survivability: lower R_θJL reduces peak junction temperature rise during 600W pulses, delaying thermal runaway. For the BZW06-128, this value is measured per JEDEC JESD51-14 and supports reliable operation under repeated surge stress when mounted with adequate PCB copper area.