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Taiwan Semiconductor Corporation BZW06-376B
- Part No.:
- BZW06-376B
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
BZW06-376B.pdf
- Description:
- TVS DIODE 376VWM 776VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,625
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Product details
Overview
BZW06-376B from Taiwan Semiconductor is a unidirectional transient voltage suppressor diode (TVS) designed for high-energy surge protection in DC power lines and signal paths. It features a 376V working stand-off voltage (VWM), 418–462V breakdown voltage (VBR), 603V clamping voltage at 1.3A (10/1000μs), 600W peak pulse power, and DO-204AC (DO-15) package - used in automotive lighting control modules to protect microcontrollers from load-dump transients.
For engineers reviewing the BZW06-376B datasheet, BZW06-376B pinout, BZW06-376B application, or BZW06-376B equivalent, key selection criteria include clamping voltage margin vs. system rail, unidirectional polarity marking, 175°C max junction temperature, low dynamic impedance, and AEC-Q101 qualification status for automotive-grade reliability.
Technical Context
The BZW06-376B operates as a silicon avalanche diode with fast response (<1.0ps from 0V to VBR) and low dynamic impedance to limit transient overvoltage before downstream ICs are damaged. Its unidirectional configuration provides reverse-biased clamping only, requiring correct cathode orientation relative to protected circuit polarity.
It delivers 600W surge capability per 10/1000μs waveform at 25°C ambient, derating linearly above 25°C with RθJA = 100°C/W and RθJL = 60°C/W. The device sustains 100A non-repetitive forward surge current (IFSM) and exhibits <1μA reverse leakage at 376V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 376 V - Maximum continuous DC operating voltage before clamping begins |
| VBR (min/max) | 418 V / 462 V - Breakdown occurs within this range at 1 mA test current; defines minimum overvoltage threshold |
| VC @ IPPM | 603 V @ 1.3 A (10/1000μs) - Clamped voltage during worst-case surge; determines protected IC's voltage stress |
| PPK | 600 W - Peak transient energy absorption capacity; validates suitability for ISO 7637-2 Pulse 5a load-dump events |
| TJ max | +175°C - Enables operation in under-hood automotive environments without thermal shutdown |
| IR @ VWM | <1 μA - Negligible leakage at rated stand-off voltage; avoids power loss or false triggering in high-impedance circuits |
| Package | DO-204AC (DO-15) - Industry-standard axial-leaded package compatible with through-hole assembly and manual repair |
Pinout & Package
DO-204AC (DO-15) package: axial-leaded, glass-passivated silicon junction, cathode band marked on one end for unidirectional polarity identification. Lead finish: pure tin, solderable per J-STD-002. Weight: ~0.400 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive supply or signal line connection | Connected to lower-potential side of protected circuit; conducts during forward surge (rare use case) |
| Cathode | Clamping node to ground or return path | Marked with band; reverse-biased during normal operation; avalanches to clamp transients above VWM |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, lighting, and body electronics per stress-test requirements |
| 600W peak pulse rating | Withstands ISO 7637-2 Pulse 5a (load dump) up to 60V/100ms without degradation |
| <1.0 ps response time | Clamps before most microcontroller I/O pins can be damaged by ESD or fast transients |
| Low dynamic impedance | Minimizes clamping voltage overshoot during high-di/dt events, improving protection margin |
| RoHS & halogen-free | Complies with EU RoHS Directive 2011/65/EU and IEC 61249-2-21 for green manufacturing |
Applications
| Automotive Lighting Control | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting LED driver ICs in headlamp modules from alternator load-dump surges (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and driver input to clamp transients above 376V. Use Value: Prevents latch-up or gate oxide rupture in MOSFET drivers by limiting clamped voltage to 603V at 1.3A. | Use Scenario: Safeguarding 24V digital input channels in programmable logic controllers against field-wiring induced transients. IC Role / Device Role / Timing Role: Standoff protection element on isolated input stage, absorbing 1kV/500A surge per IEC 61000-4-5. Use Value: Maintains signal integrity by limiting voltage excursion to ≤603V while adding <1μA leakage at 24V nominal. |
| DC Power Supply Input | ESD-Sensitive Sensor Interface |
Use Scenario: Front-end surge suppression for 36–48V telecom power supplies exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping device across bulk input capacitor, coordinated with MOV and fuse. Use Value: Absorbs 600W transient energy without thermal runaway, enabling compact board layout vs. higher-power alternatives. | Use Scenario: Protecting analog front-end amplifiers in automotive cabin sensors (e.g., occupancy, humidity) from ESD events. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS on supply rail feeding op-amp bias network. Use Value: Provides sub-nanosecond response and <1μA leakage to avoid DC offset drift while clamping ±8kV HBM ESD. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ376A | Same VWM (376V), but SMB package (surface-mount); 600W rating; slightly higher VC (612V) | Requires PCB rework for SMT vs. through-hole; better thermal performance in dense layouts | Select when automated assembly and space constraints favor SMT; verify pad thermal relief for 175°C operation |
| P6KE376A | Same DO-15 package and VWM, but 600W rating; higher VC (640V); no AEC-Q101 qualification | Lacks automotive qualification; suitable for industrial/commercial use only | Choose for cost-sensitive non-automotive designs where AEC-Q101 is not mandated |
Compared with SMBJ376A and P6KE376A, the BZW06-376B offers AEC-Q101 qualification in a proven through-hole package, tighter VC (603V), and lower leakage - making it optimal for automotive lighting and safety-critical 24V/48V systems where reliability and legacy assembly compatibility are essential.
Availability
BZW06-376B is available at Aetrix Electronics and suitable for automotive lighting control, industrial PLC I/O protection, and DC power supply input applications requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.
Supply support for BZW06-376B 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 thyristors, with global distribution and AEC-Q101 validation capabilities.
The BZW06 series was developed specifically for high-reliability automotive and industrial transient suppression, emphasizing robust surge handling, tight parametric distribution, and extended temperature operation up to +175°C.
FAQ
What is the polarity configuration of the BZW06-376B?
The BZW06-376B is a unidirectional TVS diode with cathode band marking. It clamps only in reverse bias - i.e., when voltage at the cathode exceeds the anode by more than VWM (376V). Forward conduction occurs above ~1.5V but is not its intended protection mode. Correct orientation is critical in BZW06-376B implementations to ensure clamping aligns with system polarity.
Does the BZW06-376B meet AEC-Q101 requirements?
Yes, the BZW06-376B is AEC-Q101 qualified, as confirmed in the official Taiwan Semiconductor documentation. This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD - validating its suitability for automotive under-hood and cabin applications. The "H" suffix in ordering codes (e.g., BZW06-376BH) explicitly denotes AEC-Q101 compliance; BZW06-376B itself carries this qualification per product family specification.
What is the maximum clamping voltage for the BZW06-376B under standard test conditions?
The BZW06-376B has a maximum clamping voltage (VC) of 603 V at 1.3 A using the 10/1000μs double-exponential surge waveform. This value is measured at TA = 25°C and represents the upper limit of voltage seen by protected circuitry during worst-case transient events - a key parameter for ensuring downstream ICs remain within absolute maximum ratings.
Can the BZW06-376B be used in bidirectional configurations?
No, the BZW06-376B is strictly unidirectional. Bidirectional variants in the same series carry "B" suffixes (e.g., BZW06-376B is unidirectional; BZW06-376B is *not* bidirectional - the "B" here denotes tape-and-reel packaging, not polarity). For bidirectional protection, Taiwan Semiconductor offers separate part numbers like BZW06-376B-BI (if available) or recommends pairing two unidirectional devices. Always verify polarity designation in the official datasheet before layout.
What is the thermal resistance profile of the BZW06-376B in typical mounting conditions?
The BZW06-376B has a junction-to-lead thermal resistance (RθJL) of 60°C/W and junction-to-ambient resistance (RθJA) of 100°C/W with 10mm lead length. These values assume standard DO-15 mounting on FR-4 PCB with minimal copper pour. For sustained surge duty cycles or elevated ambient temperatures, derating per Figure 2 in the datasheet is required - e.g., at 75°C ambient, usable peak power drops to ~420W.
BZW06-376B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- BZW06
- 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:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
BZW06-376B FAQ
1.How can I place an order for BZW06-376B through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW06-376B 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 BZW06-376B reliable?
The price and inventory of BZW06-376B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW06-376B is usually 5 days.
3.What payment methods are accepted for BZW06-376B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW06-376B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW06-376B?
BZW06-376B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW06-376B 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 BZW06-376B?
For technical support, including BZW06-376B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW06-376B requirements.
6.How does Aetrix verify that BZW06-376B is sourced from the original manufacturer or authorized distributors?
All BZW06-376B 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 BZW06-376B meets industry standards.
7.What is the process for return or replacement of BZW06-376B?
All BZW06-376B units undergo pre-shipment inspection (PSI). If there is an issue with BZW06-376B, 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 BZW06-376B part is unused and in its original packaging.
Return procedure for BZW06-376B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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