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STMicroelectronics BZW06-28BRL
- Part No.:
- BZW06-28BRL
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
BZW06-28BRL.pdf
- Description:
- TVS DIODE 28.2VWM 59VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:7,662
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Product details
Overview
BZW06-28BRL from STMicroelectronics is a bidirectional transient voltage suppression diode in DO-15 package, designed for IEC 61000-4-2 ESD and IEC 61000-4-4 surge protection in power supply inputs and communication lines. It features a standoff voltage (VRM) of 28 V, clamping voltage (VCL) of 45.7 V at 13.1 A (10/1000 µs), peak pulse power of 600 W, and operates up to 175 °C junction temperature.
For engineers reviewing the BZW06-28BRL datasheet, BZW06-28BRL pinout, BZW06-28BRL application, or BZW06-28BRL equivalent, key selection criteria include bidirectional clamping behavior, low dynamic resistance (0.835 Ω), high ESD robustness (30 kV air/contact discharge), and compatibility with FR4 PCB layouts requiring thermal reliability under repeated surges.
Technical Context
The BZW06-28BRL employs planar silicon junction technology optimized for low leakage (<0.2 µA at VRM) and stable clamping across -55 °C to +175 °C operating range. Its bidirectional symmetry enables symmetric surge handling without polarity constraints in AC-coupled or floating signal paths.
It delivers 600 W peak pulse power (10/1000 µs) at 25 °C ambient, derating to 300 W at Tj = 175 °C per Figure 3. Dynamic resistance (RD = 0.835 Ω) and temperature coefficient αT = 9.8 × 10⁻⁴ /°C ensure predictable VCL drift with junction heating during repetitive transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRM) | 28 V - Maximum continuous reverse working voltage before conduction begins. |
| Breakdown Voltage (VBR) | 31.4–34.8 V at 1 mA - Confirmed minimum/maximum threshold where avalanche conduction initiates reliably. |
| Clamping Voltage (VCL) | 45.7 V at 13.1 A (10/1000 µs) - Peak voltage seen by protected circuit during standardized surge event. |
| Peak Pulse Power (PPP) | 600 W (10/1000 µs, Tamb = 25 °C) - Sustained energy absorption capability without failure. |
| Dynamic Resistance (RD) | 0.835 Ω - Low impedance during clamping ensures minimal voltage overshoot under fast-rising transients. |
| ESD Withstand (IEC 61000-4-2) | 30 kV air & contact discharge - Validated immunity level for system-level ESD compliance testing. |
| Junction Temperature Range | -55 °C to +175 °C - Enables deployment in automotive engine compartments and industrial power supplies. |
Pinout & Package
DO-15 (JEDEC DO-204AC) axial-leaded package with matte tin-plated leads; body diameter 3.24 mm max, length 28.5 mm typ., lead diameter 0.80 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Cathode Band End) | Surge current entry (bidirectional) | Terminal where transient current enters during either polarity surge; symmetrical with cathode due to bidirectional structure. |
| Cathode (Banded End) | Surge current exit (bidirectional) | Terminal where transient current exits during either polarity surge; functionally identical to anode in bidirectional operation. |
Key Features
| Feature | Design Value |
|---|---|
| High-temperature surge capability | 300 W peak pulse power at Tj = 175 °C - Enables reliable operation in thermally constrained enclosures without derating penalties. |
| Low dynamic resistance | 0.835 Ω - Reduces clamping voltage rise under high-current transients, improving downstream IC survivability. |
| Ultra-low leakage current | ≤0.2 µA at VRM = 28 V - Minimizes standby power loss and avoids false triggering in high-impedance sensing circuits. |
| ESD robustness beyond Level 4 | 30 kV contact/air discharge - Exceeds IEC 61000-4-2 requirements, reducing need for secondary protection layers. |
| Lead-free and RoHS-compliant | Matte tin plating, ECOPACK2 grade - Meets global environmental regulations without compromising solderability or whisker resistance. |
Applications
| Industrial Power Input Protection | Automotive Body Control Module (BCM) Inputs |
|---|---|
|
Use Scenario: 24 V DC power rail feeding microcontroller-based control units in factory automation panels. IC Role / Device Role: Primary surge clamp on unregulated input, placed upstream of DC-DC converter and LDO regulators. Use Value: Limits transient overvoltage to ≤45.7 V during load dump or inductive switching events, preventing regulator latch-up or MCU reset. |
Use Scenario: LIN bus or sensor supply line in BCM exposed to battery transients and ESD from service ports. IC Role / Device Role: Bidirectional TVS protecting bidirectional data/supply lines against ±100 V ISO 7637-2 pulses and 30 kV ESD. Use Value: Symmetric clamping eliminates need for dual unidirectional devices, saving board space while maintaining full polarity coverage. |
| AC-DC Adapter Secondary Side | Smart Meter Communication Interface |
|
Use Scenario: Output rectifier stage of isolated flyback adapter supplying 12 V to IoT gateway logic. IC Role / Device Role: Secondary-side TVS absorbing reflected surges from primary-side switching noise and lightning-induced coupling. Use Value: 600 W rating handles coupled 10/1000 µs transients without degradation; 175 °C rating supports compact, sealed adapter designs. |
Use Scenario: RS-485 transceiver power and signal lines in utility smart meters installed in outdoor cabinets. IC Role / Device Role: Bidirectional clamping on VCC and differential bus lines to suppress EFT bursts (IEC 61000-4-4 Level 4) and ESD. Use Value: 4 kV EFT immunity and 30 kV ESD withstand enable single-device protection for both power and signal domains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ28CA | DO-214AA package, 600 W rating, VBR = 31.1–34.4 V, VCL = 45.4 V @ 13.2 A, RD = 0.82 Ω | Surface-mount footprint; lower thermal resistance to PCB but requires reflow-compatible layout | Select when board space is constrained and automated assembly is used; verify pad thermal relief for high-reliability surge cycling. |
| P6SMB28CA | DO-214AA package, 600 W rating, VBR = 31.1–34.4 V, VCL = 45.4 V @ 13.2 A, RD = 0.82 Ω, MSL level 1 | Same package as SMBJ28CA but with tighter VBR tolerance and identical surge specs | Prefer for high-volume production where traceability and JEDEC-standardized MSL compliance are mandatory. |
Compared with BZW06-28BRL, SMBJ28CA and P6SMB28CA offer identical electrical protection performance in a surface-mount format, enabling higher-density layouts and automated placement-but require careful thermal pad design to replicate the axial lead's natural heat sinking into chassis or heatsink mounts.
Availability
BZW06-28BRL is available at Aetrix Electronics and suitable for industrial power input protection, automotive BCM interfaces, and smart meter communication interfaces requiring stable component supply and long-term lifecycle support.
Supply support for BZW06-28BRL 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, designing and manufacturing analog, power, microcontroller, and sensor solutions for industrial, automotive, and consumer markets.
The BZW06 series belongs to ST's high-reliability TVS diode portfolio, engineered specifically for robust surge immunity in harsh environments-emphasizing high-temperature stability, low leakage, and repeatable clamping performance across automotive and industrial power systems.
FAQ
What is the maximum clamping voltage of BZW06-28BRL under a 10/1000 µs surge?
The maximum clamping voltage is 45.7 V at 13.1 A for a 10/1000 µs waveform, measured at Tamb = 25 °C. This value increases with junction temperature at a rate defined by αT = 9.8 × 10⁻⁴ /°C, reaching approximately 50.2 V at Tj = 175 °C per datasheet calculation method.
Is BZW06-28BRL suitable for bidirectional AC line protection?
Yes - its symmetrical bidirectional structure allows it to clamp positive and negative transients equally, making it appropriate for AC-coupled signal lines, transformer-isolated interfaces, and floating DC rails where polarity reversal may occur during fault conditions.
How does the DO-15 package affect thermal performance compared to SMD alternatives?
The DO-15 axial package provides superior natural convection cooling and mechanical robustness for through-hole mounting, especially in high-vibration environments. Its thermal resistance junction-to-ambient is ~40 °C/W on FR4 with 1 cm² copper per lead, versus ~25 °C/W for SMBJ28CA with optimized thermal pads - a trade-off between reliability and density.
Does BZW06-28BRL meet UL 497B certification?
Yes - it carries UL 497B file number QVGQ2.E136224, confirming compliance for use in telecommunications and signal line protection applications where UL-listed surge components are required for safety certification.
BZW06-28BRL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- BZW06, TRANSIL™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 28.2V
- Voltage - Breakdown (Min):
- 31.4V
- Voltage - Clamping (Max) @ Ipp:
- 59V
- Current - Peak Pulse (10/1000µs):
- 68A (8/20µs)
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 500pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
BZW06-28BRL FAQ
1.How can I place an order for BZW06-28BRL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW06-28BRL on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for BZW06-28BRL reliable?
The price and inventory of BZW06-28BRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW06-28BRL is usually 5 days.
3.What payment methods are accepted for BZW06-28BRL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW06-28BRL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW06-28BRL?
BZW06-28BRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW06-28BRL order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for BZW06-28BRL?
For technical support, including BZW06-28BRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW06-28BRL requirements.
6.How does Aetrix verify that BZW06-28BRL is sourced from the original manufacturer or authorized distributors?
All BZW06-28BRL products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BZW06-28BRL meets industry standards.
7.What is the process for return or replacement of BZW06-28BRL?
All BZW06-28BRL units undergo pre-shipment inspection (PSI). If there is an issue with BZW06-28BRL, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The BZW06-28BRL part is unused and in its original packaging.
Return procedure for BZW06-28BRL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW06-28BRL Tags
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