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STMicroelectronics BZW06-376BRL
- Part No.:
- BZW06-376BRL
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
BZW06-376BRL.pdf
- Description:
- TVS DIODE 376VWM 776VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:5,990
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Product details
Overview
BZW06-376BRL from STMicroelectronics is a bidirectional transient voltage suppression diode designed for high-energy surge protection in DC power lines and signal interfaces. It delivers 600 W peak pulse power (10/1000 µs), clamps transients up to 603 V at 1 A, and operates across -55 °C to +175 °C junction temperature. Its 376 V stand-off voltage and DO-15 package make it suitable for industrial power supply input stage protection.
For engineers reviewing the BZW06-376BRL datasheet, BZW06-376BRL pinout, BZW06-376BRL application, or BZW06-376BRL equivalent, key selection criteria include clamping voltage at rated current, dynamic resistance under 8/20 µs surges, junction temperature derating behavior, and IEC 61000-4-2/4-4 compliance margin for harsh ESD/EFT environments.
Technical Context
This TVS diode uses planar silicon technology optimized for low leakage (<0.2 µA at VRM) and stable VBR over temperature (αT = 11 × 10⁻⁴ /°C). Its bidirectional structure enables symmetrical clamping for AC-coupled or floating bus lines without polarity constraints.
The device meets IEC 61000-4-2 level 4 (30 kV air/contact discharge) and IEC 61000-4-4 level 4 (4 kV), with clamping voltage defined at 1 A (548 V min) and 776 A (603 V max) for 8/20 µs pulses - critical for protecting downstream MOSFET gates and controller ICs in SMPS front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRM) | 376 V - maximum continuous reverse operating voltage before significant leakage begins; sets minimum system working voltage margin. |
| Breakdown Voltage (VBR) | 418–462 V at 1 mA - defines onset of avalanche conduction; ensures reliable triggering above normal line transients. |
| Clamping Voltage (VCL) | 603 V at 776 A (8/20 µs) - peak voltage seen by protected circuit during worst-case surge; determines safe voltage headroom for downstream components. |
| Peak Pulse Power (PPP) | 600 W (10/1000 µs), 4 kW (8/20 µs) - energy-handling capacity defining survivability against lightning-induced surges and load dump events. |
| Dynamic Resistance (RD) | 55.1 Ω - slope of VCL vs. IPP curve; lower RD improves clamping consistency across varying surge amplitudes. |
| Junction Temperature Range | -55 °C to +175 °C - enables deployment in under-hood automotive, industrial motor drives, and outdoor telecom equipment without thermal derating penalties. |
Pinout & Package
DO-15 (JEDEC DO-204AC) package: axial leaded, epoxy-molded, matte tin-plated leads. Dimensions: A = 6.05–6.75 mm length, B = 26–31 mm body length, C = 2.95–3.53 mm diameter, D = 0.71–0.88 mm lead diameter.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Current entry terminal in forward bias | Connected to lower-potential side of protected node; bidirectional symmetry means either lead serves as anode or cathode depending on transient polarity. |
| Cathode (Lead 2) | Current exit terminal in forward bias | Connected to higher-potential side; marking band identifies cathode end per JEDEC DO-15 standard; no functional distinction from anode in bidirectional operation. |
Key Features
| Feature | Design Value |
|---|---|
| IEC 61000-4-2 Level 4 Compliance | 30 kV contact/air discharge immunity - eliminates need for external ESD filtering in industrial HMI and sensor interface designs. |
| High-Temperature Operation | 175 °C max junction temperature - supports placement near heat-generating components (e.g., PFC inductors, rectifier bridges) without derating. |
| Low Dynamic Resistance | 55.1 Ω - minimizes voltage overshoot during fast-rising 8/20 µs surges, improving protection margin for 600 V-rated MOSFETs. |
| Planar Junction Construction | Enables <0.2 µA leakage at VRM - reduces standby power loss in always-on systems such as smart meters and IoT gateways. |
Applications
| Industrial Power Supply Input Protection | Telecom Line Interface Protection |
|---|---|
Use Scenario: Protecting AC/DC adapter inputs against lightning-induced surges on 24–48 V DC distribution lines in factory automation cabinets. IC Role / Device Role / Timing Role: Primary shunt clamp absorbing >95% of 4 kV IEC 61000-4-4 surge energy before it reaches upstream bridge rectifier and bulk capacitor. Use Value: Prevents catastrophic failure of electrolytic capacitors and MOSFETs by limiting transient voltage to ≤603 V during 8/20 µs events. | Use Scenario: Safeguarding RS-485 transceivers and isolation amplifiers connected to outdoor fieldbus cables exposed to induced surges. IC Role / Device Role / Timing Role: Bidirectional clamping element placed differential-mode across A/B lines, referenced to local ground via low-inductance layout. Use Value: Maintains signal integrity by clamping common-mode transients to <603 V while preserving <1 pF junction capacitance at 1 MHz for minimal data rate degradation. |
| Automotive Body Control Module (BCM) | Renewable Energy Inverter DC Link |
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O pins from battery load dump and alternator ripple in under-hood BCMs. IC Role / Device Role / Timing Role: Secondary-level TVS after primary fuse and LC filter; handles residual transients that pass through front-end filtering. Use Value: Survives repeated 175 °C junction temperature excursions during engine runtime, ensuring 15-year reliability without parametric drift. | Use Scenario: Clamping DC link voltage spikes caused by IGBT switching in solar string inverters operating at 600–1000 V nominal bus voltage. IC Role / Device Role / Timing Role: Standoff-rated TVS placed across DC+ and DC− rails to suppress dV/dt-induced ringing and commutation spikes. Use Value: Withstands 600 W (10/1000 µs) surges without thermal runaway, enabling use without heatsinking in space-constrained inverter enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ376CA | DO-214AA package; 600 W rating; VBR = 418–462 V; VCL = 603 V @ 776 A; same αT | Surface-mount footprint replaces axial DO-15; requires PCB re-layout but enables automated assembly | Select when board space is constrained and SMT process capability exists. |
| P6KE376A | DO-15 package; 600 W rating; VBR = 400–440 V; VCL = 611 V @ 750 A; higher RD (60 Ω) | Legacy design with wider VBR tolerance and less consistent clamping; UL 497B certified but no IEC 61000-4-2 level 4 validation | Select only for cost-sensitive legacy replacements where 8 V higher clamping is acceptable. |
Compared with SMBJ376CA and P6KE376A, BZW06-376BRL offers identical electrical performance in a through-hole DO-15 package with verified IEC 61000-4-2 level 4 compliance and lower dynamic resistance - making it optimal for new designs requiring robust manual assembly or high-reliability field serviceability.
Availability
BZW06-376BRL is available at Aetrix Electronics and suitable for industrial power supply input protection, telecom line interface protection, automotive body control modules, and renewable energy inverter DC link applications requiring stable component supply and long-term lifecycle support.
Supply support for BZW06-376BRL 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, specializing in power management, analog, MEMS, and microcontroller technologies for industrial, automotive, and consumer markets.
The BZW06 series belongs to ST's high-voltage TVS portfolio engineered specifically for robust, high-temperature surge protection in mission-critical power conversion and communication infrastructure applications.
FAQ
What is the maximum clamping voltage for BZW06-376BRL under an 8/20 µs surge?
The maximum clamping voltage is 603 V at 776 A for an 8/20 µs waveform, measured at Tj = 25 °C. This value increases linearly with junction temperature at a coefficient of 11 × 10⁻⁴ /°C, reaching approximately 630 V at 175 °C junction temperature.
Is BZW06-376BRL suitable for bidirectional AC line protection?
Yes - its bidirectional construction allows symmetrical clamping across both polarities, making it appropriate for protecting AC-coupled signal lines or floating DC buses. However, it is not rated for continuous AC RMS voltage; it must be used with series impedance to limit steady-state current during fault conditions.
How does the DO-15 package affect thermal performance in high-power surge events?
The DO-15 package has a thermal resistance of ~4.5 °C/W (junction-to-ambient) with 1 cm² copper pad per lead. Under repetitive 10/1000 µs surges, this allows dissipation of up to 300 W at 175 °C junction temperature - sufficient for most industrial surge profiles when mounted on FR4 with adequate copper area.
Does BZW06-376BRL require derating at elevated ambient temperatures?
Yes - peak pulse power must be derated above 25 °C ambient. At 100 °C ambient, the 600 W rating drops to ~420 W for 10/1000 µs pulses, based on Figure 3 in DS0661 Rev 7. Derating follows the published PPP vs. Tj curve and assumes proper PCB copper thermal relief design.
BZW06-376BRL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- BZW06, TRANSIL™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 376V
- Voltage - Breakdown (Min):
- 418V
- Voltage - Clamping (Max) @ Ipp:
- 776V
- Current - Peak Pulse (10/1000µs):
- 5.7A (8/20µs)
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 175pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
BZW06-376BRL FAQ
1.How can I place an order for BZW06-376BRL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW06-376BRL 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 BZW06-376BRL reliable?
The price and inventory of BZW06-376BRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW06-376BRL is usually 5 days.
3.What payment methods are accepted for BZW06-376BRL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW06-376BRL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW06-376BRL?
BZW06-376BRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW06-376BRL 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 BZW06-376BRL?
For technical support, including BZW06-376BRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW06-376BRL requirements.
6.How does Aetrix verify that BZW06-376BRL is sourced from the original manufacturer or authorized distributors?
All BZW06-376BRL 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 BZW06-376BRL meets industry standards.
7.What is the process for return or replacement of BZW06-376BRL?
All BZW06-376BRL units undergo pre-shipment inspection (PSI). If there is an issue with BZW06-376BRL, 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 BZW06-376BRL part is unused and in its original packaging.
Return procedure for BZW06-376BRL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW06-376BRL Tags
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