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Vishay General Semiconductor - Diodes Division BZW04-40BHE3/54
- Part No.:
- BZW04-40BHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-40BHE3/54.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,020
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Product details
Overview
BZW04-40BHE3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for robust overvoltage protection of signal and power lines. It features 400 W peak pulse power (10/1000 μs), 40.2 V standoff voltage (VWM), 44.7–49.4 V breakdown voltage (VBR), and clamps transients to ≤64.8 V at 6.2 A peak pulse current - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the BZW04-40BHE3/54 datasheet, BZW04-40BHE3/54 pinout, BZW04-40BHE3/54 application, or BZW04-40BHE3/54 equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, DO-41 mechanical data, clamping performance under surge conditions, and direct alternatives for ESD/lightning transient suppression in bidirectional AC-coupled or floating signal paths.
Technical Context
This bidirectional TVS operates symmetrically in both polarities with identical VBR, VC, and IPPM characteristics - no polarity marking on the DO-41 package. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and low incremental surge resistance for consistent clamping across temperature.
Rated for 175 °C maximum junction temperature and qualified to AEC-Q101, the BZW04-40BHE3/54 supports automotive-grade reliability in engine control units and body electronics. It sustains repetitive 10/1000 μs surges at 0.01% duty cycle and meets UL 94 V-0 flammability requirements via molded epoxy encapsulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 40.2 V - maximum continuous reverse operating voltage before conduction begins; defines safe signal swing range in protected circuit. |
| VBR (min/max) | 44.7 V / 49.4 V at 1.0 mA test current - guaranteed breakdown threshold ensuring predictable turn-on during transients. |
| VC @ IPPM | ≤64.8 V at 6.2 A - clamping voltage limits downstream IC stress during 400 W surge events. |
| PPPM | 400 W - peak pulse power handling per 10/1000 μs waveform; enables protection against IEC 61000-4-5 Level 3 surges. |
| IPPM | 6.2 A - peak pulse current capability directly derived from VC and PPPM; critical for sizing series impedance. |
| TJ max. | 175 °C - high-temperature operation supports under-hood automotive placement without derating penalties. |
| AEC-Q101 | Qualified - validated for automotive applications including vibration, thermal cycling, and humidity exposure per standard. |
Pinout & Package
DO-41 (DO-204AL) axial-leaded package: 2.7 mm diameter body, 5.2 mm maximum lead diameter, 25.4 mm minimum overall length. Matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards. No polarity marking - symmetrical bidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; conducts during either polarity overvoltage - no orientation required during PCB placement. |
| Leads (anode & cathode) | Thermal and mechanical interface | Lead length ≥9.5 mm required for 75 °C power derating; solder dip rated to 275 °C for 10 s per JESD22-B106. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage (<1.0 μA) across -55 °C to +175 °C operating range. |
| 400 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 surge immunity up to 1 kV open-circuit / 0.5 kV source impedance in industrial environments. |
| AEC-Q101 qualification | Validated for automotive powertrain and chassis modules requiring zero-defect reliability and extended temperature operation. |
| UL 94 V-0 molding compound | Prevents flame propagation in enclosed enclosures - mandatory for automotive cabin and industrial control panel designs. |
| Matte tin plating (JESD201 Class 2) | Eliminates tin whisker risk in long-life applications; HE3 suffix confirms compliance with automotive whisker testing. |
Applications
| Automotive Sensor Protection | Industrial Analog Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus nodes and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping device placed across differential or single-ended signal lines upstream of ADC inputs or transceivers. Use Value: Limits transient voltage to ≤64.8 V while maintaining <1.0 μA leakage at 40.2 V - preserving signal integrity and preventing latch-up in 5 V/3.3 V systems. |
Use Scenario: Safeguarding 4–20 mA current loop receivers and ±10 V analog front-ends in PLC I/O modules against field-induced surges. IC Role / Device Role / Timing Role: Symmetrical shunt protector on ungrounded or floating signal pairs exposed to inductive switching noise. Use Value: Clamps bidirectional transients without polarity constraints; DO-41 axial form factor enables through-hole mounting in high-vibration industrial enclosures. |
| Telecom Line Interface Protection | Consumer Device USB/UART Protection |
Use Scenario: Shielding RS-485/RS-232 transceivers in telecom base station backplanes from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary-level TVS placed at connector entry point to divert >6 A surge currents before reaching IC pins. Use Value: 400 W rating handles multi-kV line surges; 175 °C TJ max allows operation near heat-generating RF components. |
Use Scenario: Adding secondary-level ESD protection to USB 2.0 D+/D− or UART TX/RX lines in smart home hubs and wearables. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF typical) bidirectional clamp minimizing signal distortion on high-speed digital lines. Use Value: Sub-μA leakage preserves battery life; HE3 suffix guarantees whisker-free reliability in consumer devices with 10+ year field life. |
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 | DO-214AA package (SMB), 600 W PPPM, 40 V VWM, 64.5 V VC @ 9.3 A - higher power but larger footprint. | Preferred where board space permits larger SMD package and higher surge margin is needed (e.g., outdoor telecom). | Select SMBJ40CA when upgrading from through-hole to surface-mount design or requiring >400 W surge headroom. |
| P6KE40CA | DO-15 package, 600 W PPPM, same VWM/VC, but lower thermal mass and 150 °C TJ max - not AEC-Q101 qualified. | Suitable for commercial/industrial use only; lacks automotive qualification and high-temp endurance. | Choose P6KE40CA for cost-sensitive non-automotive applications where AEC-Q101 is not mandated. |
Compared with BZW04-40BHE3/54, SMBJ40CA offers higher surge capacity in an SMD format but requires PCB rework, while P6KE40CA provides equivalent clamping at lower cost but omits automotive qualification and high-temperature resilience - making BZW04-40BHE3/54 the optimal choice for AEC-Q101-compliant, thermally demanding, through-hole deployments.
Availability
BZW04-40BHE3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O protection, telecom line conditioning, and consumer USB/UART ESD hardening requiring stable component supply, AEC-Q101 traceability, and DO-41 through-hole compatibility.
Supply support for BZW04-40BHE3/54 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade validation.
The BZW04 series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for bidirectional transient suppression in harsh environments - targeting automotive, industrial, and telecom applications demanding AEC-Q101 compliance and high-temperature stability.
FAQ
What is the standoff voltage (VWM) of the BZW04-40BHE3/54?
The BZW04-40BHE3/54 has a standoff voltage (VWM) of 40.2 V - the maximum DC or continuous peak reverse voltage it can withstand without entering avalanche conduction. This value ensures compatibility with 36 V nominal automotive systems and 40 V industrial rails while maintaining sub-microamp leakage current.
Is the BZW04-40BHE3/54 suitable for automotive applications?
Yes, the BZW04-40BHE3/54 is AEC-Q101 qualified and manufactured with HE3 suffix indicating compliance with JESD201 Class 2 whisker testing. Its 175 °C maximum junction temperature, glass-passivated junction, and UL 94 V-0 molding make it suitable for under-hood and chassis-mounted automotive electronics.
What does the "B" suffix in BZW04-40BHE3/54 indicate?
The "B" suffix denotes bidirectional configuration - meaning the BZW04-40BHE3/54 functions identically in both polarities, with matched breakdown and clamping characteristics for positive and negative transients. Unlike unidirectional variants, it carries no cathode band marking.
What is the clamping voltage (VC) of the BZW04-40BHE3/54 at its rated peak pulse current?
The BZW04-40BHE3/54 clamps to a maximum of 64.8 V at its rated peak pulse current (IPPM) of 6.2 A under a 10/1000 μs waveform. This VC value defines the upper voltage limit imposed on protected circuitry during surge events.
Does the BZW04-40BHE3/54 have a defined polarity marking on the package?
No, the BZW04-40BHE3/54 has no polarity marking because it is a bidirectional TVS diode. Both leads are functionally identical - the device conducts symmetrically during overvoltage events of either polarity, eliminating orientation concerns during assembly.
BZW04-40BHE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- TransZorb®
- 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:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 6.2A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
BZW04-40BHE3/54 FAQ
1.How can I place an order for BZW04-40BHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-40BHE3/54 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 BZW04-40BHE3/54 reliable?
The price and inventory of BZW04-40BHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-40BHE3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-40BHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-40BHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-40BHE3/54?
BZW04-40BHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-40BHE3/54 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 BZW04-40BHE3/54?
For technical support, including BZW04-40BHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-40BHE3/54 requirements.
6.How does Aetrix verify that BZW04-40BHE3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-40BHE3/54 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 BZW04-40BHE3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-40BHE3/54?
All BZW04-40BHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-40BHE3/54, 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 BZW04-40BHE3/54 part is unused and in its original packaging.
Return procedure for BZW04-40BHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04-40BHE3/54 Tags
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