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Taiwan Semiconductor Corporation BZW06-31B
- Part No.:
- BZW06-31B
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
BZW06-31B.pdf
- Description:
- TVS DIODE 30.8VWM 64.3VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,490
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Product details
Overview
BZW06-31B from Taiwan Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, rated for 600W peak pulse power at 10/1000μs, with 34.2V minimum breakdown voltage, 30.8V working stand-off voltage, and 49.9V clamping voltage at 12.0A. It protects automotive and industrial circuits against ESD, EFT, and inductive switching transients.
For engineers reviewing the BZW06-31B datasheet, BZW06-31B pinout, BZW06-31B application, or BZW06-31B equivalent, key selection criteria include clamping voltage margin vs. protected IC VDD, unidirectional/bidirectional polarity requirement, AEC-Q101 qualification status, thermal derating at elevated ambient, and lead-free solderability per J-STD-002.
Technical Context
The BZW06-31B operates as a silicon avalanche diode with bidirectional conduction, enabling symmetric transient suppression on AC lines or differential buses. Its low dynamic impedance ensures stable clamping under fast-rising surges up to 5ns response time, and its 175°C maximum junction temperature supports under-hood automotive deployment.
Designed for single-pulse surge immunity per IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and ISO 7637-2 (inductive load dump), it delivers 49.9V clamping at 12.0A (10/1000μs) with <1μA reverse leakage above 30.8V - critical for low-power standby circuit integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30.8 V - Maximum continuous reverse operating voltage before significant leakage begins |
| VBR (min) | 34.2 V - Minimum voltage at which avalanche breakdown initiates at 1 mA test current |
| VC @ IPPM | 49.9 V at 12.0 A - Clamped voltage during 10/1000μs surge, defining protection window for downstream ICs |
| PPK | 600 W - Peak non-repetitive surge power handling capability per single pulse |
| TJ(max) | +175 °C - Maximum junction temperature enabling operation in high-ambient automotive environments |
| RθJL | 60 °C/W - Junction-to-lead thermal resistance, critical for PCB copper pour design and thermal relief layout |
| IR @ VWM | <1 μA - Reverse leakage current ensuring minimal standby power loss in battery-powered systems |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, epoxy-molded case meeting UL 94V-0 flammability rating; pure tin-plated leads compliant with J-STD-002 solderability requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry point in forward bias; cathode reference in reverse clamp mode | Bidirectional symmetry means both terminals serve identically as clamping nodes - no fixed anode/cathode designation |
| Cathode (banded end) | Current exit point in forward bias; voltage reference in reverse clamp mode | Band marking indicates polarity for unidirectional variants only; BZW06-31B has no functional band - device is symmetrical |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified option available | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress per AEC standard |
| 600W surge rating at 10/1000μs | Enables robust protection against ISO 7637-2 Pulse 1 (inductive load dump) and Pulse 2a (battery disconnect) |
| Clamping voltage ≤49.9V at 12A | Provides ≥2.2V margin below typical 50V-rated CAN/LIN transceivers and microcontroller I/O rails |
| Response time <5.0 ns (bidirectional) | Ensures suppression activation prior to damage threshold of fast-edge digital interfaces (e.g., USB, RS-485) |
| RoHS & halogen-free compliance | Fulfills EU Directive 2011/65/EU and IEC 61249-2-21 for environmentally constrained industrial and medical equipment |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load-dump transients on 12V battery-fed ECUs and body control modules. IC Role / Device Role / Timing Role: Bidirectional TVS placed across power rail and ground to clamp voltage spikes before they reach MCU power pins. Use Value: Limits rail voltage to ≤49.9V during 100V/50ms ISO 7637-2 Pulse 5a, preventing brownout or latch-up in 5V/3.3V logic supplies. | Use Scenario: Shielding 4–20mA current-loop sensor inputs from EFT bursts in factory automation PLCs. IC Role / Device Role / Timing Role: Placed differentially across input terminals to absorb ±2kV/5kHz EFT noise without disrupting analog signal fidelity. Use Value: Maintains sub-0.1% measurement accuracy by limiting common-mode excursion to <50V during 40A/50ns EFT events. |
| LED Driver Overvoltage Clamp | RS-485 Bus Transient Suppression |
Use Scenario: Protecting constant-current LED drivers from inductive kickback when switching high-side MOSFETs. IC Role / Device Role / Timing Role: Connected between driver output and ground to clamp flyback voltage spikes generated by transformer leakage inductance. Use Value: Prevents >60V overshoot that would exceed 65V absolute max rating of typical LED driver ICs like LM3409. | Use Scenario: Safeguarding RS-485 transceivers (e.g., SN65HVD230) against lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Installed line-to-line and line-to-ground to limit differential and common-mode transients simultaneously. Use Value: Ensures data integrity by clamping bus voltage to <±55V during 1kV/500A 8/20μs surges, staying within transceiver fault tolerance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33CA | Same DO-214AA package; 33V VWM, 53.3V VC @ 11.3A; lower PPK = 600W but higher clamping voltage | Less margin for 3.3V/5V rail protection; preferred where board space favors SMD over axial | Select SMBJ33CA when surface-mount assembly is required and clamping voltage margin allows ≥53V |
| P6KE33CA | DO-15 package identical to BZW06-31B; 33V VWM, 53.3V VC @ 11.3A; same 600W rating but slower response (~10ns) | Not AEC-Q101 qualified; suitable for industrial but not automotive qualification paths | Choose P6KE33CA for cost-sensitive industrial designs where AEC-Q101 is not mandated |
Compared with SMBJ33CA and P6KE33CA, BZW06-31B offers tighter clamping (49.9V vs. 53.3V), faster response (<5ns vs. ~10ns), and AEC-Q101 qualification path - making it optimal for automotive power rail protection where voltage margin and qualification rigor are critical.
Availability
BZW06-31B is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, LED driver circuits, and RS-485 communication systems requiring stable component supply and long-term lifecycle support.
Supply support for BZW06-31B 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 engineered specifically for high-energy transient suppression in harsh-environment applications - emphasizing low clamping voltage, repeatable surge endurance, and automotive-grade reliability across wide temperature ranges.
FAQ
What is the polarity configuration of BZW06-31B?
BZW06-31B is a bidirectional TVS diode, meaning it provides symmetrical clamping for both positive and negative transients without designated anode or cathode terminals. Unlike unidirectional variants (e.g., BZW06-31), the "B" suffix denotes bidirectional functionality - confirmed by identical VBR min/max values for both polarities (34.2V–37.8V) and absence of cathode band marking in mechanical drawings.
Is BZW06-31B AEC-Q101 qualified?
BZW06-31B itself is not automatically AEC-Q101 qualified; qualification applies only to versions marked with the "H" suffix (e.g., BZW06-31BH). The base BZW06-31B meets all electrical and mechanical specifications of the series but lacks the extended reliability testing required for automotive qualification. Customers requiring AEC-Q101 must specify BZW06-31BH.
What is the maximum clamping voltage of BZW06-31B under standard test conditions?
The maximum clamping voltage of BZW06-31B is 49.9V at 12.0A peak pulse current using the 10/1000μs waveform, as specified in the "Clamping Voltage @ IPPM (10/1000μs)" column of the Electrical Characteristics table. This value defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
How does BZW06-31B compare to BZW06-31 in terms of performance?
BZW06-31B differs from BZW06-31 solely in polarity: BZW06-31 is unidirectional (cathode-banded, asymmetric clamping), while BZW06-31B is bidirectional (no band, symmetric clamping). Both share identical VWM (30.8V), VBR range (34.2–37.8V), VC (49.9V), and PPK (600W). Selection depends strictly on whether the protected line carries DC (unidirectional) or AC/differential signals (bidirectional).
What is the thermal resistance from junction to lead (RθJL) for BZW06-31B?
The junction-to-lead thermal resistance (RθJL) for BZW06-31B is 60°C/W, as stated in the Thermal Performance section. This parameter governs heat transfer from the silicon die to the PCB copper via the axial leads and directly impacts safe operating area during repetitive surge events or elevated ambient temperatures.
BZW06-31B 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):
- 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)
BZW06-31B FAQ
1.How can I place an order for BZW06-31B through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW06-31B 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 BZW06-31B reliable?
The price and inventory of BZW06-31B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW06-31B is usually 5 days.
3.What payment methods are accepted for BZW06-31B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW06-31B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW06-31B?
BZW06-31B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW06-31B 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 BZW06-31B?
For technical support, including BZW06-31B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW06-31B requirements.
6.How does Aetrix verify that BZW06-31B is sourced from the original manufacturer or authorized distributors?
All BZW06-31B 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 BZW06-31B meets industry standards.
7.What is the process for return or replacement of BZW06-31B?
All BZW06-31B units undergo pre-shipment inspection (PSI). If there is an issue with BZW06-31B, 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 BZW06-31B part is unused and in its original packaging.
Return procedure for BZW06-31B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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