Taiwan Semiconductor Corporation BZW06-376

Overview

BZW06-376 from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode with a working stand-off voltage of 376 V, breakdown voltage range 418–462 V, and clamping voltage of 603 V at 1.3 A (10/1000 μs). It features low dynamic impedance, <1 μA reverse leakage above 10 V, and is housed in a DO-204AC (DO-15) package for industrial surge protection in power supply rails and automotive electronics.

For engineers reviewing the BZW06-376 datasheet, BZW06-376 pinout, BZW06-376 application, or BZW06-376 equivalent, key selection criteria include its 376 V VWM rating, 603 V clamping performance at 1.3 A, AEC-Q101 qualification option (BZW06-376H), DO-15 mechanical compatibility, and thermal resistance of 60 °C/W (junction-to-lead).

Technical Context

The BZW06-376 operates as a unidirectional avalanche diode optimized for high-energy transient suppression using silicon planar junction technology. Its clamping behavior is defined by a sharp breakdown knee at 418–462 V (tested at 1 mA), with fast response time (<1.0 ps from 0 V to VBR) enabling protection against ESD and electrical fast transients.

Thermal design relies on its 60 °C/W junction-to-lead resistance and 175 °C maximum junction temperature, while steady-state dissipation is limited to 1.7 W at 75 °C lead temperature. The device meets RoHS and halogen-free standards per IEC 61249-2-21 and passes JESD 201 Class 2 whisker testing.

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 SMBJ376A and P6KE376A, the BZW06-376 offers AEC-Q101 qualification and tighter VBR tolerance (418–462 V vs. ±5% typical), making it preferred for automotive front-end protection where reliability traceability and precise clamping onset are critical.

Availability

BZW06-376 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC input stages, LED driver overvoltage clamping, and telecom PoE interface protection requiring stable component supply and long-term lifecycle support.

Supply support for BZW06-376 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 for industrial and automotive markets.

The BZW06 series was designed specifically for high-energy transient suppression in harsh environments, emphasizing robustness, tight parametric control, and qualification-ready variants for automotive Tier 1 suppliers.

FAQ

What is the maximum clamping voltage of the BZW06-376 under standard test conditions?

The BZW06-376 has a maximum clamping voltage (V_CL) of 603 V when subjected to a 10/1000 μs surge waveform at a peak pulse current (I_PPM) of 1.3 A. This value is measured per JEDEC standards and reflects the actual voltage seen by downstream components during transient events. The BZW06-376 maintains this clamping performance across its specified operating temperature range, making it suitable for use in environments where voltage margin is critical.

Is the BZW06-376 available in an AEC-Q101 qualified version?

Yes, the AEC-Q101 qualified version of the BZW06-376 is designated as BZW06-376H. This variant undergoes extended stress testing including temperature cycling, highly accelerated life testing (HALT), and ESD validation per AEC-Q101 Rev D. The BZW06-376H is intended for automotive applications such as body control modules and ADAS power supplies where reliability certification is mandatory.

What is the thermal resistance from junction to ambient for the BZW06-376 in standard mounting conditions?

The BZW06-376 has a junction-to-ambient thermal resistance (R_θJA) of 100 °C/W when mounted on a standard FR-4 PCB with 10 mm lead length, per JEDEC Test Method JESD51-2. This value assumes no additional copper pour or heatsinking. For higher-power or elevated-temperature applications, designers should reference the 60 °C/W junction-to-lead (R_θJL) spec and implement appropriate lead-frame thermal relief or chassis grounding.

Does the BZW06-376 have bidirectional capability?

No, the BZW06-376 is a unidirectional TVS diode. Its datasheet specifies breakdown and clamping parameters only for reverse-biased operation, and it features a cathode band marking consistent with unidirectional polarity. For bidirectional protection at the same voltage rating, the BZW06-376B variant must be selected - it shares the same VWM (376 V) and package but provides symmetrical clamping for AC-coupled or floating-line applications.

What packaging options are offered for the BZW06-376?

The BZW06-376 is supplied in two standard packaging formats: 3,500 units per tape-and-reel (standard code BZW06-376) and 1,500 units per ammo box (code BZW06-376A0G). Both use the DO-204AC (DO-15) axial package with pure tin-plated leads compliant with J-STD-002 solderability requirements. Tape-and-reel is recommended for automated through-hole insertion; ammo box supports manual or semi-automated assembly.