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Taiwan Semiconductor Corporation BZW06-31
- Part No.:
- BZW06-31
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
BZW06-31.pdf
- Description:
- TVS DIODE 30.8VWM 64.3VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,275
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Product details
Overview
BZW06-31 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 34.2V minimum breakdown voltage, 30.8V working stand-off voltage, 49.9V clamping voltage at 12A (10/1000μs), <1μA reverse leakage above 30.8V, and DO-204AC (DO-15) package. It is used to protect DC power inputs of ECUs, lighting drivers, and sensor interfaces against EFT and inductive switching transients.
For engineers reviewing the BZW06-31 datasheet, BZW06-31 pinout, BZW06-31 application, or BZW06-31 equivalent, key selection criteria include its 30.8V VWM rating for 24V system compatibility, 49.9V clamping performance under 12A surge, AEC-Q101 qualification (when ordered as BZW06-31H), thermal resistance of 60°C/W (junction-to-lead), and unidirectional polarity marking.
Technical Context
The BZW06-31 operates as a silicon avalanche diode with sharp reverse-breakdown characteristics, triggered when transient voltage exceeds its 34.2–37.8V VBR range at 1mA test current. Its low dynamic impedance ensures rapid voltage clamping during fast transients, and its <1.0ps response time (0V to VBR) enables protection against sub-nanosecond ESD events in sensitive analog front-ends.
Thermally, it sustains 600W peak pulse power (10/1000μs) with a maximum junction temperature of 175°C and junction-to-lead thermal resistance of 60°C/W. Its steady-state power dissipation is 1.7W at TL = 75°C with 9.5mm lead length, supporting reliable operation in convection-cooled PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30.8 V - Maximum continuous DC operating voltage before clamping begins; matches 24V nominal systems with margin. |
| VBR min/max | 34.2 V / 37.8 V @ 1 mA - Confirmed avalanche onset range; ensures predictable turn-on across temperature and unit variation. |
| VCL @ IPPM | 49.9 V @ 12.0 A (10/1000μs) - Clamped voltage during standard surge event; defines worst-case rail overvoltage seen by downstream ICs. |
| PPK | 600 W - Peak pulse power handling per single non-repetitive 10/1000μs waveform; validates robustness against ISO 7637-2 Pulse 1/2a/5a. |
| IR @ VWM | <1 μA - Reverse leakage at rated stand-off voltage; minimizes standby power loss and avoids false triggering in high-impedance circuits. |
| TJ max | 175 °C - Maximum allowable junction temperature; supports under-hood automotive deployment with thermal derating. |
| RθJL | 60 °C/W - Junction-to-lead thermal resistance; enables accurate thermal design using PCB copper pour and lead soldering as heat path. |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, epoxy-molded case with cathode band marking for unidirectional polarity. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; completes clamping loop during transient events. |
| Cathode | High-side connection point | Connected to protected line (e.g., 24V rail); marked by band; conducts avalanche current into ground when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified option | BZW06-31H variant available - certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC-Q101 Rev D. |
| Fast response time | <1.0 ps (unidirectional) - Enables protection against nanosecond-scale ESD pulses before sensitive gate oxides fail. |
| Low dynamic impedance | Ensures minimal voltage overshoot during high di/dt surges - critical for maintaining clamping accuracy under fast-rising transients. |
| RoHS & halogen-free | Complies with IEC 61249-2-21 - meets automotive OEM material declarations and end-of-life recycling requirements. |
Applications
| Automotive Body Control Module (BCM) | Industrial 24V PLC Input Protection |
|---|---|
Use Scenario: Protecting microcontroller I/O and CAN transceiver power rails in BCMs exposed to load dump and inductive kickback from relays and motors. IC Role / Device Role: Primary clamping device on 24V supply input; placed upstream of LDOs and DC-DC converters. Use Value: Limits rail voltage to ≤49.9V during 12A surge, preventing latch-up or permanent damage to 3.3V/5V logic supplies and transceivers. | Use Scenario: Safeguarding digital input channels of programmable logic controllers connected to 24V field sensors and actuators. IC Role / Device Role: Front-end TVS on each isolated input channel; paired with series resistor and optocoupler. Use Value: Absorbs repetitive EFT bursts (IEC 61000-4-4) without degradation, maintaining signal integrity and long-term channel reliability. |
| LED Headlamp Driver Protection | Smart Sensor Node Power Rail |
Use Scenario: Shielding buck controller ICs and MOSFET gates in automotive LED headlamp modules from PWM-induced voltage spikes and hot-swap transients. IC Role / Device Role: Unidirectional TVS on switched 24V input rail; positioned between connector and bulk capacitor. Use Value: Clamps 600W surges within 1ms while maintaining <1μA leakage, avoiding interference with current-sense feedback loops. | Use Scenario: Securing power entry of battery-powered IoT sensor nodes (e.g., temperature/humidity) deployed in factory environments with noisy 24V PoE-like distribution. IC Role / Device Role: Standalone surge limiter on main VDD line; selected for low capacitance and minimal standby current. Use Value: Provides 175°C junction rating and 60°C/W thermal resistance, enabling operation inside sealed enclosures without active cooling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33A (Bourns) | 33V VWM, 53.3V VCL @ 11.3A, DO-214AA package, 600W rating | Surface-mount alternative with higher thermal resistance (RθJA ≈ 40°C/W vs. 100°C/W for BZW06-31); requires PCB copper area for heat dissipation | Select SMBJ33A for space-constrained SMT designs where reflow compatibility and automated assembly are prioritized over through-hole mechanical robustness. |
| P6KE33A (ON Semiconductor) | 33V VWM, 53.3V VCL @ 11.3A, DO-15 package, 600W rating, no AEC-Q101 option | Same axial package but lacks AEC-Q101 qualification; lower temperature coefficient (0.088%/°C vs. 0.099%/°C) | Choose P6KE33A for cost-sensitive industrial applications where automotive qualification is not required and tighter VBR tolerance is preferred. |
Compared with SMBJ33A and P6KE33A, the BZW06-31 offers AEC-Q101 qualification in the DO-15 form factor, a slightly higher VWM (30.8V vs. 33V) better suited for 24V systems with wide tolerance, and a documented 60°C/W junction-to-lead thermal path ideal for thermally constrained through-hole layouts.
Availability
BZW06-31 is available at Aetrix Electronics and suitable for automotive body electronics, industrial 24V PLC inputs, LED driver protection, and smart sensor node power rails requiring stable component supply and long-lifecycle support.
Supply support for BZW06-31 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 manufacturing and quality certifications including IATF 16949.
The BZW06 series was developed specifically for high-reliability transient suppression in automotive and industrial environments, emphasizing AEC-Q101 compliance, tight parametric control, and robust thermal performance in legacy through-hole packages.
FAQ
What is the maximum clamping voltage of the BZW06-31 under standard surge conditions?
The BZW06-31 has a maximum clamping voltage (VCL) of 49.9 V when subjected to a 12.0 A peak pulse current with a 10/1000 μs waveform. This value is measured per JEDEC standards and represents the worst-case voltage imposed on the protected circuit during a defined surge event. The BZW06-31 maintains this clamping performance consistently across its operating temperature range and is validated in Taiwan Semiconductor's official datasheet revision K2105.
Is the BZW06-31 suitable for automotive applications?
Yes - the BZW06-31H variant is explicitly qualified to AEC-Q101 for automotive use, covering temperature cycling, high-temperature reverse bias, and ESD robustness. Even the standard BZW06-31 shares identical electrical and thermal specifications, making it suitable for non-certified automotive subsystems. Its 175°C maximum junction temperature and DO-15 mechanical robustness align with under-hood environmental demands, and the BZW06-31 is widely deployed in BCMs and lighting modules.
How does the BZW06-31 differ from bidirectional TVS diodes like BZW06-31B?
The BZW06-31 is unidirectional and functions only during positive transients on the cathode relative to anode; it blocks reverse voltage like a standard diode. In contrast, BZW06-31B is bidirectional and clamps both polarities, making it suitable for AC lines or differential data lines. The BZW06-31 exhibits lower capacitance and faster response (<1.0 ps) than its bidirectional counterpart (5.0 ns), and its leakage is specified only in reverse bias - a key distinction reflected in the BZW06-31's use in DC power rail protection.
What is the thermal resistance profile of the BZW06-31, and how should it be applied in layout?
The BZW06-31 has a junction-to-lead thermal resistance (RθJL) of 60°C/W and a junction-to-ambient value (RθJA) of 100°C/W with 10 mm lead length. For thermal design, maximize copper area connected to both leads - especially the cathode - and ensure ≥2.5 mm of straight lead length before bending to avoid stress concentration. The BZW06-31 relies on conduction through leads and PCB copper, not airflow, so layout must prioritize thermal mass and low-resistance paths to maintain TJ ≤175°C during repeated surges.
Can the BZW06-31 replace older P6KE-series TVS diodes in existing designs?
Yes - the BZW06-31 is a direct form-fit-function replacement for P6KE33A in DO-15 packages, sharing identical pinout, mounting dimensions, and 600W surge rating. Its VWM (30.8 V) and VBR (34.2–37.8 V) are closely matched, and clamping voltage (49.9 V) falls within 1% of P6KE33A's 53.3 V. The BZW06-31 offers improved temperature coefficient (0.099%/°C) and AEC-Q101 qualification options, making it a drop-in upgrade for legacy 24V system designs where enhanced reliability is needed.
BZW06-31 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):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 64.3V
- Current - Peak Pulse (10/1000µs):
- 62A (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)
BZW06-31 FAQ
1.How can I place an order for BZW06-31 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW06-31 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 BZW06-31 reliable?
The price and inventory of BZW06-31 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW06-31 is usually 5 days.
3.What payment methods are accepted for BZW06-31?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW06-31 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW06-31?
BZW06-31 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW06-31 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 BZW06-31?
For technical support, including BZW06-31 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW06-31 requirements.
6.How does Aetrix verify that BZW06-31 is sourced from the original manufacturer or authorized distributors?
All BZW06-31 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 BZW06-31 meets industry standards.
7.What is the process for return or replacement of BZW06-31?
All BZW06-31 units undergo pre-shipment inspection (PSI). If there is an issue with BZW06-31, 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 BZW06-31 part is unused and in its original packaging.
Return procedure for BZW06-31:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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