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Taiwan Semiconductor Corporation BZW06-85
- Part No.:
- BZW06-85
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
BZW06-85.pdf
- Description:
- TVS DIODE 85.5VWM 178VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,890
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Product details
Overview
BZW06-85 from Taiwan Semiconductor is a unidirectional 600W Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in automotive and industrial power rails. It features a 85.5V working stand-off voltage (VWM), 95–105V breakdown voltage (VBR @ 1mA), 137V clamping voltage at 4.4A (10/1000μs), and operates across –55°C to +175°C junction temperature range - deployed in ECU power input stages against load dump and ISO 7637-2 transients.
For engineers reviewing the BZW06-85 datasheet, BZW06-85 pinout, BZW06-85 application, or BZW06-85 equivalent, key selection criteria include its DO-204AC (DO-15) axial package, AEC-Q101 qualification (BZW06-85H variant), low dynamic impedance, sub-1ps response time, and verified clamping performance under 10/1000μs surge waveforms.
Technical Context
The BZW06-85 functions as a unidirectional avalanche diode that enters conduction when reverse voltage exceeds its VBR (min 95V), clamping transient energy into the PCB ground path before sensitive downstream circuitry is damaged. Its thermal design supports 175°C max junction temperature and 60°C/W junction-to-lead resistance, enabling reliable operation under sustained ambient heat in engine bay environments.
It delivers 600W peak pulse power per 10/1000μs waveform with <1μA leakage above 10V, and exhibits a temperature coefficient of 0.106%/°C for VBR drift compensation in wide-temperature designs. Polarity is marked by cathode band; leads are pure tin-plated and J-STD-002 solderable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 85.5 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR @ 1mA | 95–105 V - Breakdown voltage range defining reliable avalanche onset threshold |
| VCL @ 4.4A (10/1000μs) | 137 V - Clamped voltage during 600W surge, limiting stress on protected ICs |
| PPK | 600 W - Peak pulse power handling capability per standard 10/1000μs waveform |
| TJ Range | –55°C to +175°C - Enables deployment in under-hood automotive locations without derating |
| RθJL | 60 °C/W - Junction-to-lead thermal resistance supporting PCB copper pour heat sinking |
| IR @ VWM | <1 μA - Minimal leakage current preserving low-power standby integrity |
Pinout & Package
Package: DO-204AC (DO-15), axial leaded, epoxy-molded case with UL 94V-0 rating and cathode band marking for polarity identification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Ground reference | Connected to system ground; carries surge current during clamping |
| Cathode | Reverse-biased input terminal / Protected line | Connected to protected rail (e.g., battery feed); blocks VWM, avalanches at VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (H variant) | Validated for automotive electronics per stress test requirements including temperature cycling, HTRB, and ESD |
| Fast response time | Typically <1.0 ps from 0 V to VBR - ensures clamping initiates before transient edge damages downstream logic |
| Low dynamic impedance | Enables tight VCL–VBR margin (137V vs. 95V min), reducing overvoltage overshoot during surge events |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive - suitable for green manufacturing and export compliance |
Applications
| Automotive Engine Control Unit (ECU) Power Input | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting microcontroller power supply inputs against ISO 7637-2 Pulse 5a (load dump) up to 60V superimposed on 14V nominal battery rail. IC Role / Device Role: Unidirectional TVS placed between battery feed and LDO input, shunting surge energy to chassis ground. Use Value: Clamps 600W transients to ≤137V within 1ps, preventing LDO overvoltage failure and ensuring ECU functional safety compliance. | Use Scenario: Safeguarding 24V DC digital input channels in programmable logic controllers exposed to inductive kickback from solenoid valves. IC Role / Device Role: Front-end TVS on each optocoupler input line, absorbing repetitive 10/1000μs surges from relay coil de-energization. Use Value: With 1μA leakage and 175°C TJ rating, maintains signal integrity and long-term reliability in hot control cabinet environments. |
| LED Streetlight Driver Input Stage | Telecom Power Supply Surge Interface |
Use Scenario: Guarding AC/DC primary-side rectifier outputs against lightning-induced surges on outdoor lighting grid connections. IC Role / Device Role: Primary-side TVS parallel to bulk capacitor, clamping line-to-ground transients before they reach PWM controller. Use Value: 600W rating and DO-15 mechanical robustness support outdoor IP67-rated fixture longevity under repeated surge exposure. | Use Scenario: Protecting -48V telecom rectifier outputs from fast transients generated by hot-swap module insertion or backup battery switching. IC Role / Device Role: Reverse-polarity TVS on -48V return path, clamping negative-going spikes while maintaining low leakage in always-on systems. Use Value: Sub-1μA IR at 85.5V preserves standby current budget; 0.106%/°C VBR TC enables stable clamping across telecom equipment rack temperatures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ85A (Bourns) | DO-214AA package; 85V VWM, 137V VCL @ 4.4A; same 600W rating but higher RθJA (110°C/W) | Suitable for surface-mount layouts; less effective in high-ambient thermal environments without heatsinking | Select when board space is constrained and reflow assembly is preferred over axial through-hole |
| P6KE85A (ON Semiconductor) | DO-15 package identical to BZW06-85; 85V VWM, 137V VCL @ 4.4A; 600W rating; no AEC-Q101 option | Lacks automotive qualification; acceptable for industrial/commercial use where qualification is not mandated | Choose for cost-sensitive non-automotive applications requiring identical mechanical fit and electrical performance |
Compared with SMBJ85A and P6KE85A, the BZW06-85 offers AEC-Q101 qualification and lower RθJL (60°C/W vs. 110°C/W), making it preferable for thermally demanding automotive deployments where axial lead thermal conduction is leveraged.
Availability
BZW06-85 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC input conditioning, and LED driver surge suppression requiring stable component supply and long-lifecycle availability.
Supply support for BZW06-85 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, with global distribution and AEC-Q101 validation capabilities.
The BZW06 series was developed specifically for high-reliability transient suppression in automotive and industrial power systems, emphasizing robust surge handling, wide temperature operation, and qualification-grade consistency.
FAQ
What is the maximum clamping voltage of the BZW06-85 under a 10/1000μs surge?
The BZW06-85 has a maximum clamping voltage (VCL) of 137 V when subjected to a 4.4 A peak pulse current with a 10/1000 μs waveform. This value is measured per JEDEC standards and ensures predictable overvoltage limiting for downstream components such as LDOs or microcontrollers in the BZW06-85 protected circuit.
Is the BZW06-85 suitable for automotive applications?
Yes - the BZW06-85H variant is AEC-Q101 qualified, meeting stress test requirements for temperature cycling, high-temperature reverse bias, and ESD. The base BZW06-85 meets all electrical and thermal specs required for under-hood ECU and body control module protection, though only the "H" suffix denotes formal qualification.
What package type does the BZW06-85 use, and is it through-hole or surface-mount?
The BZW06-85 uses the DO-204AC (DO-15) axial-leaded package, which is a through-hole mount configuration. Its leads are pure tin-plated and compliant with J-STD-002 solderability standards, supporting both wave and hand-soldering processes in production and repair workflows involving the BZW06-85.
How does the temperature coefficient affect the BZW06-85's breakdown voltage?
The BZW06-85 has a VBR temperature coefficient of +0.106 %/°C, meaning its breakdown voltage increases linearly with junction temperature. At 125°C, VBR rises ~10.6% above its 25°C value - a critical factor when designing for worst-case clamping in high-ambient environments where the BZW06-85 operates near its 175°C TJMAX.
Can the BZW06-85 replace the P6KE85A in an existing design?
The BZW06-85 shares identical DO-15 packaging, VWM (85.5 V), VBR (95–105 V), and VCL (137 V @ 4.4 A) with P6KE85A, enabling direct mechanical and electrical replacement. However, only the BZW06-85H variant carries AEC-Q101 qualification - if automotive compliance is required, the standard BZW06-85 should be verified per application context before substitution.
BZW06-85 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 85.5V
- Voltage - Breakdown (Min):
- 95V
- Voltage - Clamping (Max) @ Ipp:
- 178V
- Current - Peak Pulse (10/1000µs):
- 23A (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)
BZW06-85 FAQ
1.How can I place an order for BZW06-85 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW06-85 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 BZW06-85 reliable?
The price and inventory of BZW06-85 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW06-85 is usually 5 days.
3.What payment methods are accepted for BZW06-85?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW06-85 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW06-85?
BZW06-85 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW06-85 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 BZW06-85?
For technical support, including BZW06-85 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW06-85 requirements.
6.How does Aetrix verify that BZW06-85 is sourced from the original manufacturer or authorized distributors?
All BZW06-85 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 BZW06-85 meets industry standards.
7.What is the process for return or replacement of BZW06-85?
All BZW06-85 units undergo pre-shipment inspection (PSI). If there is an issue with BZW06-85, 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 BZW06-85 part is unused and in its original packaging.
Return procedure for BZW06-85:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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