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Taiwan Semiconductor Corporation BZW06-40B
- Part No.:
- BZW06-40B
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
BZW06-40B.pdf
- Description:
- TVS DIODE 40.2VWM 84VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,900
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Product details
Overview
BZW06-40B 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 44.7V minimum breakdown voltage, 40.2V working stand-off voltage, and 64.8V clamping voltage at 9.3A. It protects automotive and industrial circuits against ESD, EFT, and inductive switching transients.
For engineers reviewing the BZW06-40B datasheet, BZW06-40B pinout, BZW06-40B application, or BZW06-40B equivalent, key selection criteria include clamping voltage margin vs. protected IC VDD, unidirectional/bidirectional polarity match, surge current handling at system-level threat waveforms, and AEC-Q101 qualification status for automotive use.
Technical Context
The BZW06-40B operates as a voltage-clamped shunt protector: when transient voltage exceeds its 44.7–49.4V breakdown range, it avalanches to divert surge current away from downstream circuitry. Its bidirectional configuration enables symmetric protection on AC lines or differential buses without polarity constraints.
With <1.0ps response time for unidirectional variants and 5.0ns for bidirectional types like BZW06-40B, it reacts before most microsecond-scale transients fully develop. Its low dynamic impedance ensures stable clamping under high di/dt conditions, while 1μA max reverse leakage at 40.2V supports low-power standby integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 40.2 V - Maximum continuous reverse operating voltage before conduction begins; must exceed system nominal voltage by ≥10% to avoid false triggering. |
| VBR (min) | 44.7 V - Minimum breakdown voltage at 1 mA test current; defines lower bound of clamping onset threshold. |
| VC @ IPPM | 64.8 V at 9.3 A (10/1000μs) - Clamping voltage during worst-case surge; determines maximum stress seen by protected IC. |
| PPK | 600 W - Peak pulse power rating; validates capability to absorb IEC 61000-4-5 Level 4 (4 kV) surges without failure. |
| TJ max | 175 °C - Maximum junction temperature; enables operation in under-hood automotive environments with minimal derating. |
| Package | DO-204AC (DO-15) - Standard axial-leaded through-hole package with 0.400 g mass and UL 94V-0 molding compound. |
Pinout & Package
DO-204AC (DO-15) package: axial-leaded, cylindrical glass-passivated body, cathode band marking for unidirectional variants only; BZW06-40B is bidirectional and has no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Surge current entry (positive half-cycle) | Connects to line under protection; forms symmetrical avalanche path with cathode during positive transients. |
| Cathode | Surge current entry (negative half-cycle) | Connects to line under protection; forms symmetrical avalanche path with anode during negative transients. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified option | BZW06-40BH variant available - meets automotive-grade reliability requirements including temperature cycling, HTRB, and ESD testing. |
| Low dynamic impedance | Ensures minimal voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a), improving protection margin. |
| 600W surge capability | Validated at 10/1000μs waveform - sufficient for IEC 61000-4-5 combination wave (2 Ω source) up to 4 kV. |
| Fast response time | 5.0 ns turn-on for bidirectional mode - faster than typical MOVs or polymer-based protectors, critical for protecting high-speed interfaces. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontrollers connected to 12 V battery rails subject to load dump and jump-start transients. IC Role / Device Role / Timing Role: Shunt clamping device placed between power rail and ground, triggered only during overvoltage events. Use Value: Limits voltage to ≤64.8 V during 9.3 A surges, preventing latch-up or oxide breakdown in 3.3 V/5 V logic devices powered from local LDOs. | Use Scenario: Safeguarding analog front-end inputs of pressure/temperature sensors in PLC I/O modules exposed to field wiring EFT. IC Role / Device Role / Timing Role: Bidirectional voltage clamp across differential sensor lines (e.g., RS-485, 4–20 mA loop) to suppress common-mode transients. Use Value: Symmetric clamping maintains signal integrity during ±4 kV EFT bursts (IEC 61000-4-4), avoiding offset shifts or ADC saturation. |
| LED Driver Output Protection | Power Supply Input Stage Protection |
Use Scenario: Shielding constant-current LED driver outputs from inductive kickback when driving solenoids or relays on shared PCBs. IC Role / Device Role / Timing Role: Transient energy sink placed across driver output terminals to clamp flyback spikes. Use Value: Absorbs 600 W pulses without degradation, enabling reliable operation in outdoor lighting systems with mechanical switching loads. | Use Scenario: Front-end surge suppression on AC-DC adapter primary-side rectifier outputs subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-side TVS after bridge rectifier to limit DC bus overvoltage before bulk capacitor and controller IC. Use Value: Clamps 64.8 V peak during 10/1000 μs surges, preventing overvoltage shutdown or damage to PWM controllers rated for 65 V max VDD. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ40CA | Same DO-214AA package; 40 V VWM, 64.5 V VC @ 9.4 A; 600 W rating; RoHS-compliant but not AEC-Q101 qualified by default. | Preferred for commercial/industrial designs where automotive qualification is unnecessary; slightly tighter VBR tolerance. | Select SMBJ40CA when cost sensitivity outweighs AEC-Q101 requirement and board space allows SMB footprint. |
| P6KE40CA | DO-15 package like BZW06-40B; 40 V VWM, 64.5 V VC @ 9.4 A; 600 W rating; legacy series with wider VBR spread (44.4–49.1 V). | Used in legacy industrial equipment; lacks halogen-free certification per IEC 61249-2-21 and AEC-Q101 option. | Choose P6KE40CA only for drop-in replacement in existing DO-15 designs where material compliance updates are not mandated. |
Compared with SMBJ40CA and P6KE40CA, BZW06-40B offers identical clamping performance and DO-15 compatibility while providing AEC-Q101 qualification path (via BH suffix) and halogen-free construction - critical for Tier 1 automotive supply chains and green manufacturing mandates.
Availability
BZW06-40B is available at Aetrix Electronics and suitable for automotive power line protection, industrial sensor interface hardening, LED driver output safeguarding, and power supply input stage surge suppression requiring stable component supply and long-term lifecycle support.
Supply support for BZW06-40B 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-certified product lines.
The BZW06 series was designed specifically for robust transient suppression in harsh automotive and industrial environments, emphasizing high surge robustness, thermal stability up to 175°C, and compliance with automotive reliability standards.
FAQ
What is the clamping voltage of BZW06-40B at 9.3 A?
The BZW06-40B has a maximum clamping voltage of 64.8 V at 9.3 A under the 10/1000 μs standard surge waveform. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. The BZW06-40B maintains this clamping performance across its full operating temperature range of –55°C to +175°C.
Is BZW06-40B unidirectional or bidirectional?
BZW06-40B is a bidirectional TVS diode, meaning it provides symmetrical clamping for both positive and negative voltage transients. Unlike unidirectional variants (e.g., BZW06-40), the BZW06-40B has no cathode band marking and functions identically across polarity reversals - essential for protecting AC-coupled or differential signal paths where polarity is undefined.
Does BZW06-40B meet AEC-Q101 qualification?
The base BZW06-40B is not AEC-Q101 qualified; however, the BZW06-40BH variant - identifiable by the "H" suffix - is fully AEC-Q101 qualified. This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and ESD robustness, making BZW06-40BH suitable for automotive powertrain and chassis applications where reliability is mission-critical.
What is the maximum steady-state power dissipation of BZW06-40B?
The BZW06-40B has a steady-state power dissipation (PD) of 1.7 W at lead temperature (TL) = 75°C with 9.5 mm lead length. This rating applies only to continuous DC or low-frequency reverse-bias conditions - not surge events. During transient suppression, the device relies on its 600 W peak pulse rating, which is thermally non-repetitive and governed by junction-to-lead thermal resistance (RθJL = 60°C/W).
How does BZW06-40B compare to SMAJ40A in terms of package and performance?
BZW06-40B uses a DO-204AC (DO-15) axial-leaded package, whereas SMAJ40A uses a surface-mount DO-214AC (SMA) package - differing significantly in mounting method, thermal path, and board space. Electrically, both offer ~40 V VWM and ~64–65 V clamping, but BZW06-40B supports higher surge current density due to its larger thermal mass and lead-frame construction, making it preferable for high-energy transient environments.
BZW06-40B 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):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 84V
- Current - Peak Pulse (10/1000µs):
- 48A (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)
BZW06-40B FAQ
1.How can I place an order for BZW06-40B through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW06-40B 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 BZW06-40B reliable?
The price and inventory of BZW06-40B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW06-40B is usually 5 days.
3.What payment methods are accepted for BZW06-40B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW06-40B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW06-40B?
BZW06-40B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW06-40B 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 BZW06-40B?
For technical support, including BZW06-40B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW06-40B requirements.
6.How does Aetrix verify that BZW06-40B is sourced from the original manufacturer or authorized distributors?
All BZW06-40B 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 BZW06-40B meets industry standards.
7.What is the process for return or replacement of BZW06-40B?
All BZW06-40B units undergo pre-shipment inspection (PSI). If there is an issue with BZW06-40B, 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 BZW06-40B part is unused and in its original packaging.
Return procedure for BZW06-40B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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