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Taiwan Semiconductor Corporation BZW04-10
- Part No.:
- BZW04-10
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-10.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:8,847
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Product details
Overview
BZW04-10 from Taiwan Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-204AL (DO-41) package, rated for 400W peak pulse power at 10/1000μs waveform, with 10.2V working stand-off voltage, 11.4–12.6V breakdown voltage at 1mA, and 16.7V maximum clamping voltage at 24.0A peak impulse current. It protects automotive and industrial power rails against ESD and inductive switching transients.
For engineers reviewing the BZW04-10 datasheet, BZW04-10 pinout, BZW04-10 application, or BZW04-10 equivalent, this TVS diode is selected for high-reliability overvoltage protection where low leakage (<5μA @ 10.2V), fast response time, and AEC-Q101 qualification (BZW04-10B variant) are critical design requirements.
Technical Context
The BZW04-10 operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its 11.4–12.6V breakdown range, clamping transients to ≤16.7V at 24.0A. Its junction-to-lead thermal resistance is 60°C/W, enabling reliable operation up to 175°C junction temperature.
It complies with ANSI/IEEE C62.35 for transient suppression, exhibits <5μA reverse leakage at VWM, and maintains stable VBR temperature coefficient of 0.078%/°C - critical for consistent clamping across automotive temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10.2 V - Maximum continuous DC or RMS voltage the device blocks without conduction. |
| VBR @ IT=1mA | 11.4–12.6 V - Voltage at which avalanche breakdown begins; defines precise turn-on threshold. |
| VC @ IPP=24.0A | 16.7 V - Clamped voltage during 10/1000μs surge; determines protected circuit's maximum transient exposure. |
| PPK | 400 W - Peak pulse power handling per single 10/1000μs event; supports IEC 61000-4-5 Level 4 immunity. |
| ID @ VWM | <5 μA - Ultra-low leakage ensures minimal standby power loss and signal integrity in high-impedance circuits. |
| TJ max | +175 °C - Enables use in under-hood automotive environments and high-temperature industrial power supplies. |
| RθJL | 60 °C/W - Low thermal resistance allows efficient heat transfer to PCB leads, supporting sustained surge duty cycles. |
Pinout & Package
Package: DO-204AL (DO-41), axial leaded, epoxy-molded case meeting UL 94V-0; cathode indicated by band marking; pure tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Ground reference | Connected to system ground or low-side return path; conducts during forward surge events (e.g., reverse polarity protection). |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 12V rail); avalanche conduction initiates here during overvoltage to shunt energy to ground. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified option (BZW04-10B) | Validated for automotive powertrain and body electronics per stress test requirements including HTOL, TCT, and ESD. |
| Low clamping ratio (VC/VBR ≈ 1.43) | Minimizes voltage overshoot during transients, reducing risk of downstream IC latch-up or damage. |
| 10/1000μs 400W surge rating | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive equipment up to Level 4 (4kV line-earth). |
| RoHS & halogen-free (IEC 61249-2-21) | Enables compliance with global environmental regulations and supports lead-free reflow assembly processes. |
| Junction temperature range –55°C to +175°C | Supports deployment in extreme ambient conditions such as engine control units, LED drivers, and solar inverters. |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting 12V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges before they reach MCU power pins. Use Value: Limits transient voltage to ≤16.7V, preventing damage to 16V-rated LDOs and CAN transceivers while maintaining <5μA leakage at nominal 12V. |
Use Scenario: Shielding digital input terminals of programmable logic controllers from field-wiring induced EFT bursts. IC Role / Device Role / Timing Role: Standoff protector on 24V DC inputs, absorbing repetitive 5kHz EFT pulses per IEC 61000-4-4. Use Value: Fast avalanche response (<1ns) and 400W peak power rating ensure robust immunity without degrading signal edge integrity. |
| LED Driver Overvoltage Clamp | ESD-Sensitive Sensor Interface |
Use Scenario: Safeguarding constant-current LED driver ICs from inductive kickback during MOSFET switching. IC Role / Device Role / Timing Role: Parallel-connected TVS across output terminals to clamp flyback spikes generated by long cable inductance. Use Value: 16.7V clamping voltage prevents exceedance of driver IC's absolute maximum output rating (typically 18–20V). |
Use Scenario: Front-end protection for analog sensor signals (e.g., pressure, temperature) exposed to human-handling ESD. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ < 100pF at zero bias) placed directly at connector entry point. Use Value: Sub-5μA leakage preserves microamp-level sensor bias currents; 16.7V clamping avoids forward-biasing downstream op-amps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10A (Bourns) | Same DO-214AA package; 10V VWM, 11.1V min VBR, 17.0V VC @ 23.3A; 600W PPK rating. | Higher surge rating suits more severe IEC 61000-4-5 Level 5 scenarios; larger footprint than DO-41 limits space-constrained layouts. | Select SMBJ10A when higher peak power margin is required and PCB real estate permits SMC/SMB package. |
| P6KE10A (ON Semiconductor) | DO-15 package; 10V VWM, 11.1V min VBR, 17.0V VC @ 23.3A; 600W PPK; no AEC-Q101 option. | Higher thermal mass improves steady-state dissipation but slower transient response vs. BZW04 series due to higher junction capacitance. | Choose P6KE10A for cost-sensitive industrial designs where AEC-Q101 is not mandated and lead length allows adequate heat sinking. |
Compared with SMBJ10A and P6KE10A, the BZW04-10 offers tighter VBR tolerance (±5.5% vs ±10%), lower leakage (<5μA vs typically 10–50μA), and DO-41 compatibility with legacy through-hole designs - making it optimal for space-constrained automotive modules requiring verified low-leakage performance.
Availability
BZW04-10 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC input conditioning, and LED driver overvoltage clamping requiring stable component supply and traceable sourcing.
Supply support for BZW04-10 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 ISO/TS 16949 and AEC-Q200 certified production lines.
The BZW04 series was designed specifically for high-reliability transient suppression in automotive and industrial power systems, emphasizing low leakage, tight VBR tolerance, and AEC-Q101 qualification across voltage variants.
FAQ
What is the key difference between BZW04-10 and BZW04-10B?
The BZW04-10B is the AEC-Q101 qualified version of the BZW04-10, subjected to rigorous automotive stress testing including high-temperature operating life, temperature cycling, and ESD robustness validation. The BZW04-10 is the standard industrial-grade variant. Both share identical electrical parameters - VWM = 10.2V, VBR = 11.4–12.6V, VC = 16.7V - and DO-204AL packaging. For automotive applications, BZW04-10B is mandatory; for industrial use, BZW04-10 suffices.
Does BZW04-10 support bidirectional transient suppression?
No, BZW04-10 is a unidirectional TVS diode, intended for DC power line protection where polarity is fixed. It conducts only in reverse breakdown (cathode-to-anode) and forward conduction (anode-to-cathode). For AC or bipolar signal line protection, a dedicated bidirectional variant like BZW04-10R must be used - which has symmetrical breakdown in both directions and no polarity marking.
What is the maximum allowable PCB trace length for effective BZW04-10 protection?
To maintain sub-nanosecond response and minimize inductive voltage overshoot, PCB traces connecting the BZW04-10 to the protected node and ground should be kept under 5 mm in length and as wide as possible (≥1.5 mm). Longer traces add series inductance that degrades clamping performance - especially critical for fast ESD transients. Mounting directly at the connector or IC power pin is strongly recommended for BZW04-10.
Can BZW04-10 replace P6KE10A in an existing design?
BZW04-10 is not a direct drop-in replacement for P6KE10A due to different packages: BZW04-10 uses DO-204AL (DO-41) with 5.3mm lead spacing, while P6KE10A uses DO-15 with 5.0mm spacing and longer body. Electrical specs are closely matched (VWM = 10.2V vs 10V, VC = 16.7V vs 17.0V), but mechanical fit and thermal profile differ. Redesign of footprint and layout verification are required before substitution.
What is the typical junction capacitance of BZW04-10 at zero bias?
The BZW04-10 exhibits a typical junction capacitance of <100 pF at zero bias and 1 MHz, as confirmed by Taiwan Semiconductor's Characteristic Curves (Fig.7). This low capacitance ensures minimal signal distortion in DC and low-frequency power rail applications. Capacitance increases with applied reverse bias - e.g., ~150 pF at VWM (10.2V) - but remains suitable for non-RF power protection roles.
BZW04-10 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- BZW04
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 24A
- Power - Peak Pulse:
- 400W
- 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-204AL (DO-41)
BZW04-10 FAQ
1.How can I place an order for BZW04-10 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-10 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 BZW04-10 reliable?
The price and inventory of BZW04-10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-10 is usually 5 days.
3.What payment methods are accepted for BZW04-10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-10?
BZW04-10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-10 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 BZW04-10?
For technical support, including BZW04-10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-10 requirements.
6.How does Aetrix verify that BZW04-10 is sourced from the original manufacturer or authorized distributors?
All BZW04-10 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 BZW04-10 meets industry standards.
7.What is the process for return or replacement of BZW04-10?
All BZW04-10 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-10, 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 BZW04-10 part is unused and in its original packaging.
Return procedure for BZW04-10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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