STMicroelectronics BZW06-26BRL

Overview

BZW06-26BRL from STMicroelectronics is a bidirectional transient voltage suppression (TVS) diode in DO-15 package, designed for IEC 61000-4-2 ESD and IEC 61000-4-4 surge protection. It features a standoff voltage (VRM) of 26 V, clamping voltage (VCL) ≤ 42.9 V at 10/1000 µs, peak pulse power of 600 W, and operates up to 175 °C junction temperature - deployed in AC/DC front-end protection for industrial power supplies.

For engineers reviewing the BZW06-26BRL datasheet, BZW06-26BRL pinout, BZW06-26BRL application, or BZW06-26BRL equivalent, key selection criteria include bidirectional clamping behavior, low dynamic resistance (RD = 0.62 Ω), high ESD robustness (30 kV contact/air), and compatibility with FR4 PCB layouts requiring minimal copper area under leads.

Technical Context

This TVS diode uses planar silicon technology to achieve low leakage (<0.2 µA at VRM), stable VBR (28.9–32.1 V), and predictable thermal derating - enabling reliable operation at Tj = 175 °C. Its bidirectional architecture provides symmetrical clamping for AC-coupled lines without polarity constraints.

The device complies with IEC 61000-4-2 Level 4 (30 kV), IEC 61000-4-4 Level 4 (4 kV), and UL 497B, supporting surge immunity in telecom interfaces, industrial I/O modules, and SMPS input stages where low capacitance (<100 pF at 1 V) and fast response (<1 ns) are critical.

Key Specifications

Pinout & Package

DO-15 (JEDEC DO-204AC) axial-leaded package with matte tin-plated leads; body length 6.05–6.75 mm, lead diameter 0.71–0.88 mm, overall length 26–31 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMBJ26CA and P6KE27CA, BZW06-26BRL offers lower leakage (0.2 µA vs. 5 µA), tighter VBR tolerance (±5% vs. ±10%), and optimized thermal performance at 175 °C - making it preferable for high-reliability industrial power designs where long-term stability matters.

Availability

BZW06-26BRL is available at Aetrix Electronics and suitable for industrial AC input protection, telecom line interface, SMPS primary-side surge suppression, and automotive body control module I/O requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for BZW06-26BRL 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, delivering innovative solutions across automotive, industrial, power, and analog markets with vertical manufacturing capability and broad IP portfolio.

The BZW06 series belongs to ST's high-reliability TVS diode product line, engineered specifically for robust surge and ESD protection in mission-critical industrial and telecom infrastructure where junction temperature resilience and waveform-specific clamping accuracy are mandatory.

FAQ

What is the maximum clamping voltage for BZW06-26BRL under a 10/1000 µs surge?

The maximum clamping voltage (VCL) is 42.9 V at 14 A peak pulse current for a 10/1000 µs waveform, measured at Tamb = 25 °C. This value increases linearly with junction temperature using αT = 10 × 10⁻⁴ /°C, reaching ~46.2 V at Tj = 125 °C.

Is BZW06-26BRL suitable for bidirectional AC line protection?

Yes - BZW06-26BRL is explicitly a bidirectional TVS diode, with symmetrical breakdown and clamping characteristics in both polarities. Its DO-15 package and lack of polarity marking make it ideal for direct placement across AC mains inputs or transformer secondaries.

How does its thermal performance compare to standard DO-15 TVS diodes?

BZW06-26BRL is rated for continuous operation up to Tj = 175 °C, exceeding typical DO-15 TVS limits (usually 150 °C). Its planar construction and low thermal resistance enable 300 W peak power dissipation even at max junction temperature, verified per Figure 3 in DS0661 Rev 7.

Can it replace P6KE26CA in existing designs?

Yes - BZW06-26BRL shares the same DO-15 package, VRM (26 V), and PPP (600 W), but offers tighter VBR tolerance (±5% vs. ±10%), lower leakage (0.2 µA vs. 5 µA), and superior high-temperature stability. No layout change is needed; verify clamping margin against downstream component ratings.