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Taiwan Semiconductor Corporation BZW04-5V8
- Part No.:
- BZW04-5V8
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-5V8.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:4,211
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Product details
Overview
BZW04-5V8 from Taiwan Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for primary overvoltage protection in low-voltage DC circuits. It features a 5.8 V working stand-off voltage (VWM), 6.45–7.14 V breakdown voltage (VBR) at 10 mA, 400 W peak pulse power (10/1000 μs), clamping voltage of 10.5 V at 38 A peak current, and operates across –55 °C to +175 °C junction temperature - deployed in automotive lighting control and microcontroller I/O line protection.
For engineers reviewing the BZW04-5V8 datasheet, BZW04-5V8 pinout, BZW04-5V8 application, or BZW04-5V8 equivalent, key selection criteria include its DO-41 package compatibility, low leakage (<1000 µA @ 5.8 V), fast response time, AEC-Q101 qualification option (BZW04-5V8H), and precise clamping performance under 10/1000 µs surge conditions.
Technical Context
The BZW04-5V8 is a silicon avalanche diode optimized for unidirectional clamping in low-impedance surge paths. Its 60 °C/W junction-to-lead thermal resistance enables reliable power dissipation on standard PCB copper pads, while its <1 µA reverse leakage above 10 V ensures minimal standby current impact in battery-powered systems.
It complies with ANSI/IEEE C62.35 for transient suppression and delivers stable clamping under 10/1000 µs waveform stress. The device exhibits a 0.057 %/°C VBR temperature coefficient, supporting predictable voltage margining across automotive temperature ranges without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.8 V - Maximum continuous reverse voltage before conduction begins; sets safe operating margin below system rail. |
| VBR @ IT=10 mA | 6.45–7.14 V - Breakdown onset range; defines minimum clamping threshold under standardized test current. |
| VC @ IPP = 38 A | 10.5 V - Clamped voltage during 400 W surge; determines maximum stress imposed on protected IC inputs. |
| PPK (10/1000 µs) | 400 W - Peak surge power handling; supports IEC 61000-4-5 Level 4 (4 kV) transients in properly impedance-matched lines. |
| ID @ VWM | <1000 µA - Reverse leakage at stand-off voltage; ensures negligible quiescent current draw in always-on circuits. |
| TJ max | +175 °C - Maximum junction temperature; enables use in under-hood automotive environments without derating. |
| RθJL | 60 °C/W - Junction-to-lead thermal resistance; allows direct thermal coupling to PCB copper for sustained 1 W steady-state dissipation. |
Pinout & Package
Package: DO-204AL (DO-41), axial leaded, epoxy-molded case with cathode band marking for unidirectional polarity. Meets UL 94V-0 flammability rating and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground or low-impedance return path; forms clamping loop with cathode. |
| Cathode | Protected line input terminal | Connected to signal/power line being protected; conducts surge current to anode when V > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified variant available | BZW04-5V8H meets stress testing for automotive electronics including temperature cycling, HTRB, and ESD. |
| Low clamping ratio (VC/VBR ≈ 1.55) | Ensures tight voltage margin between breakdown and clamping - critical for protecting 5 V logic interfaces. |
| Fast response time (<1 ps) | Clamps transients before propagation into downstream ICs; no external triggering or delay circuitry required. |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally constrained applications. |
| Pure tin-plated leads | Enables reliable solderability per J-STD-002 and eliminates lead-free assembly compatibility issues. |
Applications
| Automotive LED Headlamp Driver Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protects MOSFET gate drivers and current-sense amplifiers in 12 V automotive LED headlamp modules from load-dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS placed between driver output and ground to clamp positive transients before they reach sensitive analog front-ends. Use Value: Limits clamped voltage to 10.5 V - well below 16 V absolute maximum ratings of common 5 V op-amps and comparators used in feedback loops. |
Use Scenario: Shields 24 V digital input optocouplers in programmable logic controllers from EFT bursts and field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on input line prior to series resistor and opto-LED, absorbing energy before current reaches isolation barrier. Use Value: Withstands 38 A peak impulse at 10/1000 µs - exceeds IEC 61000-4-4 Level 4 (2 kV) requirements for industrial control environments. |
| USB-C Power Delivery Line Protection | Smart Meter Microcontroller I/O Protection |
Use Scenario: Guards CC1/CC2 configuration channel lines in USB-C PD controllers against ESD and hot-plug transients. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ < 100 pF at 0 V) placed directly at connector, minimizing stub length to preserve signal integrity. Use Value: 5.8 V VWM aligns with USB-C 5 V bus tolerance; clamps sub-11 V to prevent latch-up in dual-supply PD PHYs. |
Use Scenario: Safeguards GPIO and UART pins of metrology SoCs in electricity smart meters exposed to lightning-induced surges on RS-485 or pulse-output lines. IC Role / Device Role / Timing Role: Primary-level TVS on meter's external interface traces, upstream of polyfuse and secondary filtering. Use Value: 175 °C max junction temperature supports operation inside sealed, thermally insulated meter enclosures without forced cooling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0A | Higher VWM (5.0 V), lower VC (9.2 V @ 43.3 A), same DO-214AA package - not DO-41; 600 W PPK rating. | Surface-mount only; requires PCB rework for through-hole legacy designs using BZW04-5V8. | Select SMBJ5.0A only if SMT layout and higher surge margin are prioritized over axial lead compatibility. |
| P6KE6.8A | Lower PPK (600 W), higher VWM (6.8 V), larger DO-15 package; 1000 µA ID @ VWM vs. 1000 µA for BZW04-5V8. | Less precise VWM match for 5 V systems; bulkier footprint limits high-density board placement. | Choose P6KE6.8A only when legacy DO-15 socket compatibility or higher single-pulse energy tolerance is required. |
Compared with SMBJ5.0A and P6KE6.8A, the BZW04-5V8 provides optimal fit for through-hole 5 V rail protection where DO-41 mechanical integration, AEC-Q101 qualification path, and tight 5.8 V VWM margin are design-critical - without requiring layout change or sacrificing thermal performance.
Availability
BZW04-5V8 is available at Aetrix Electronics and suitable for automotive lighting control, industrial PLC input stages, and smart meter interface protection requiring stable component supply and long-term lifecycle support.
Supply support for BZW04-5V8 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 Taiwanese semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for automotive, industrial, and consumer markets.
The BZW04 series was developed to deliver AEC-Q101-capable, high-reliability TVS protection in standard DO-41 packaging - targeting cost-sensitive yet mission-critical applications in automotive body electronics and industrial controls.
FAQ
What is the maximum clamping voltage of the BZW04-5V8 under surge conditions?
The BZW04-5V8 clamps to a maximum of 10.5 V when subjected to a 38 A peak impulse current (IPP) under the standard 10/1000 µs waveform. This value is measured at TA = 25 °C and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring compatibility with 5 V logic families' absolute maximum ratings. The BZW04-5V8 maintains this clamping performance across its full operating temperature range.
Is the BZW04-5V8 suitable for bidirectional transient protection?
No - the BZW04-5V8 is a unidirectional TVS diode, marked with a cathode band and specified only for single-polarity surge suppression. For bidirectional protection, the BZW04-5V8B variant must be used. The BZW04-5V8's electrical parameters (e.g., VBR, VC) are defined exclusively for reverse-biased operation; forward conduction follows standard silicon diode behavior and is not rated for surge handling.
Does the BZW04-5V8 meet AEC-Q101 qualification standards?
The base BZW04-5V8 is not AEC-Q101 qualified; however, the BZW04-5V8H variant - indicated by the "H" suffix in the ordering code - is fully AEC-Q101 qualified. This includes stress testing for temperature cycling, high-temperature reverse bias (HTRB), and ESD per JS-001. Designers requiring automotive-grade reliability must specify BZW04-5V8H, not BZW04-5V8, to ensure compliance.
What is the reverse leakage current specification for the BZW04-5V8 at its working voltage?
The BZW04-5V8 exhibits a maximum reverse leakage current (ID) of 1000 µA when biased at its 5.8 V working stand-off voltage (VWM), measured at TA = 25 °C. This leakage remains stable across temperature and ensures minimal impact on battery drain or signal integrity in always-on monitoring circuits. The BZW04-5V8's low leakage supports long-term operation in energy-constrained edge nodes.
Can the BZW04-5V8 be used in place of the P6KE6.8A in existing designs?
No - the BZW04-5V8 is not a drop-in replacement for the P6KE6.8A due to differences in VWM (5.8 V vs. 6.8 V), package (DO-41 vs. DO-15), and thermal resistance (60 °C/W vs. ~50 °C/W). Substituting BZW04-5V8 may result in premature conduction or insufficient surge margin. Any replacement requires validation of clamping behavior, PCB footprint compatibility, and thermal performance - the BZW04-5V8 must be selected intentionally for its specific 5.8 V standoff and DO-41 form factor.
BZW04-5V8 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):
- 5.8V
- Voltage - Breakdown (Min):
- 6.45V
- Voltage - Clamping (Max) @ Ipp:
- 10.5V
- Current - Peak Pulse (10/1000µs):
- 38A
- 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)
BZW04-5V8 FAQ
1.How can I place an order for BZW04-5V8 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-5V8 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 BZW04-5V8 reliable?
The price and inventory of BZW04-5V8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-5V8 is usually 5 days.
3.What payment methods are accepted for BZW04-5V8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-5V8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-5V8?
BZW04-5V8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-5V8 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 BZW04-5V8?
For technical support, including BZW04-5V8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-5V8 requirements.
6.How does Aetrix verify that BZW04-5V8 is sourced from the original manufacturer or authorized distributors?
All BZW04-5V8 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 BZW04-5V8 meets industry standards.
7.What is the process for return or replacement of BZW04-5V8?
All BZW04-5V8 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-5V8, 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 BZW04-5V8 part is unused and in its original packaging.
Return procedure for BZW04-5V8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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