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Vishay General Semiconductor - Diodes Division BZW04-40B-E3/54
- Part No.:
- BZW04-40B-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-40B-E3/54.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,930
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Product details
Overview
BZW04-40B-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for clamping voltage transients on signal or power lines. It features 400 W peak pulse power (10/1000 μs), 40.2 V stand-off voltage (VWM), 44.7–49.4 V breakdown voltage (VBR at 1 mA), and clamps 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 BZW04-40B-E3/54 datasheet, BZW04-40B-E3/54 pinout, BZW04-40B-E3/54 application, or BZW04-40B-E3/54 equivalent, this page delivers verified electrical parameters, DO-41 terminal mapping, AEC-Q101 qualification status, clamping performance under 10/1000 μs surge, and direct alternatives for bidirectional overvoltage protection in harsh environments.
Technical Context
This device operates symmetrically in both directions with identical VBR, VC, and IPPM specifications - no polarity marking required. Its glass-passivated junction enables fast response (<1 ns) and low incremental surge resistance, critical for protecting MOSFET gates and microcontroller I/O pins against ESD and inductive switching spikes.
Rated for -55 °C to +175 °C junction temperature and qualified to AEC-Q101, the BZW04-40B-E3/54 sustains 1.5 W steady-state power dissipation at TL = 75 °C and withstands 40 A non-repetitive forward surge (8.3 ms half-sine) - confirming suitability for under-hood automotive and high-reliability industrial control applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 40.2 V - maximum continuous reverse operating voltage before conduction begins; defines safe working margin below clamping threshold |
| VBR (min/max) | 44.7 V / 49.4 V at 1 mA - guaranteed breakdown range ensures consistent turn-on across production lots and temperature |
| VC @ IPPM | ≤64.8 V at 6.2 A - clamping voltage limits downstream component stress during 10/1000 μs transients |
| PPPM | 400 W - peak pulse power handling capability per standard 10/1000 μs waveform, 0.01% duty cycle |
| IPPM | 6.2 A - maximum non-repetitive surge current the device safely diverts without degradation |
| TJ max. | +175 °C - extended junction temperature rating supports operation in engine compartments and sealed enclosures |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with axial leads; matte tin-plated terminals compliant with J-STD-002 and JESD22-B102 solderability standards. No polarity marking - symmetrical bidirectional construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (either lead) | Reversible transient conduction path | Both terminals function identically; no cathode band - enables placement without orientation check |
| Case | Non-conductive epoxy body | Provides mechanical protection and UL 94 V-0 flammability compliance; no thermal or electrical connection |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables <1 ns response time and stable leakage performance across -55 °C to +175 °C |
| 400 W 10/1000 μs pulse rating | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-line) in compact DO-41 footprint |
| AEC-Q101 qualification | Validated for automotive powertrain and chassis modules requiring zero-defect field reliability |
| UL 94 V-0 molding compound | Meets flame-retardant requirements for enclosed industrial and transportation equipment |
| RoHS-compliant (E3 suffix) | Lead-free matte tin plating meets JEDEC J-STD-020 reflow profiles and JESD201 Class 1A whisker resistance |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt transients before reaching signal conditioning circuitry. Use Value: Limits induced voltage to ≤64.8 V during 10/1000 μs surges, preventing latch-up or gate oxide damage in 3.3 V/5 V interface ICs. |
Use Scenario: Safeguarding digital input channels of programmable logic controllers against inductive kickback from solenoid valves and motor contactors. IC Role / Device Role / Timing Role: Fast-acting voltage clamp on 24 V DC input lines, absorbing repetitive switching transients without thermal runaway. Use Value: Maintains system uptime by eliminating false triggering and input-stage failures caused by >1 kV transients in factory automation environments. |
| Telecom Line Interface | Consumer Appliance Power Supply |
Use Scenario: Shielding Ethernet PHYs and RS-485 transceivers from lightning-induced surges on outdoor data lines. IC Role / Device Role / Timing Role: Primary-level TVS on differential pairs, coordinated with GDT or MOV secondary protection stages. Use Value: Provides sub-100 V clamping within 1 ns to preserve signal integrity and meet ITU-T K.21 basic protection requirements. |
Use Scenario: Suppressing switch-mode power supply (SMPS) turn-off spikes and ESD events on AC input rectifier outputs in white goods. IC Role / Device Role / Timing Role: Secondary overvoltage clamp after bridge rectifier, limiting voltage overshoot into bulk capacitor and controller IC. Use Value: Extends electrolytic capacitor life and prevents brownout resets by holding peak voltage ≤64.8 V during 400 W transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ40CA | DO-214AA package; 400 W rating; VWM = 40 V, VC = 64.5 V at 6.2 A - nearly identical clamping but 30% larger footprint | Preferred where board space allows larger SMD footprint and automated assembly is prioritized over through-hole | Select SMBJ40CA when migrating to surface-mount layout or requiring higher thermal mass via PCB copper pour |
| P6KE44CA | DO-15 package; 600 W rating; VWM = 37.6 V, VC = 72.7 V at 8.3 A - higher power but looser clamping and wider VBR tolerance | Used in legacy industrial power supplies where tighter voltage control is less critical than energy absorption | Choose P6KE44CA only if system design tolerates ≥72 V clamping and requires higher single-pulse energy handling |
Compared with BZW04-40B-E3/54, SMBJ40CA offers SMD compatibility at the cost of board area, while P6KE44CA trades clamping precision for higher surge capacity - making BZW04-40B-E3/54 optimal for space-constrained, voltage-sensitive automotive and industrial signal-line protection.
Availability
BZW04-40B-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer appliance power supplies requiring stable component supply across long production lifecycles.
Supply support for BZW04-40B-E3/54 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 designs discrete semiconductors for high-reliability power, signal, and protection applications, with emphasis on automotive, industrial, and computing markets.
The BZW04 series targets robust transient suppression in harsh environments - engineered specifically for AEC-Q101 compliance, wide temperature operation, and repeatable clamping performance in bidirectional configurations.
FAQ
What is the clamping voltage of BZW04-40B-E3/54 at its rated peak pulse current?
The BZW04-40B-E3/54 clamps to a maximum of 64.8 V at its specified peak pulse current of 6.2 A under the standard 10/1000 μs waveform. This value is measured per IEC 61000-4-5 test conditions and guarantees protection margin for 40 V nominal circuits. The BZW04-40B-E3/54 maintains this clamping performance across its full operating temperature range (-55 °C to +175 °C).
Is BZW04-40B-E3/54 suitable for automotive applications?
Yes, BZW04-40B-E3/54 is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and ADAS sensor interfaces. Its DO-41 package passes vibration, thermal cycling, and humidity testing per AEC-Q101, and its 175 °C max junction temperature supports under-hood deployment. The BZW04-40B-E3/54 meets ISO 7637-2 Pulse 1, 2a, 3a/b, and 5a requirements when properly implemented.
How does the bidirectional configuration of BZW04-40B-E3/54 affect PCB layout?
The BZW04-40B-E3/54 has no polarity marking and functions identically in either orientation, eliminating orientation verification during manual or automated assembly. This simplifies PCB layout by removing the need for silkscreen polarity indicators or asymmetric pad design. The BZW04-40B-E3/54 can be placed across any two nodes requiring symmetrical overvoltage protection - such as differential signal lines or AC-coupled inputs - without regard to lead direction.
What is the maximum steady-state power dissipation for BZW04-40B-E3/54?
The BZW04-40B-E3/54 has a maximum steady-state power dissipation (PD) of 1.5 W when mounted on an infinite heatsink at lead temperature (TL) = 75 °C. Derating follows the curve in Figure 5 of the datasheet, reducing to ~0.75 W at TL = 125 °C. This rating applies only to continuous DC or low-frequency reverse leakage - not transient events. The BZW04-40B-E3/54 is not intended for sustained power regulation.
Does BZW04-40B-E3/54 have RoHS and lead-free compliance documentation?
Yes, the "E3" suffix in BZW04-40B-E3/54 denotes full RoHS compliance per EU Directive 2011/65/EU and JEDEC JS709C. The matte tin-plated leads meet JESD201 Class 1A whisker resistance and J-STD-002 solderability requirements. Certificate of Compliance and material declarations are available from Vishay upon request. The BZW04-40B-E3/54 contains no exemptions beyond those permitted under Annex III of RoHS.
BZW04-40B-E3/54 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
BZW04-40B-E3/54 FAQ
1.How can I place an order for BZW04-40B-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-40B-E3/54 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 BZW04-40B-E3/54 reliable?
The price and inventory of BZW04-40B-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-40B-E3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-40B-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-40B-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-40B-E3/54?
BZW04-40B-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-40B-E3/54 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 BZW04-40B-E3/54?
For technical support, including BZW04-40B-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-40B-E3/54 requirements.
6.How does Aetrix verify that BZW04-40B-E3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-40B-E3/54 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 BZW04-40B-E3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-40B-E3/54?
All BZW04-40B-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-40B-E3/54, 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 BZW04-40B-E3/54 part is unused and in its original packaging.
Return procedure for BZW04-40B-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04-40B-E3/54 Tags
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