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Vishay General Semiconductor - Diodes Division BZW04-40-E3/54
- Part No.:
- BZW04-40-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-40-E3/54.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:4,020
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Product details
Overview
BZW04-40-E3/54 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 a 40.2 V standoff voltage (VWM), 44.7–49.4 V breakdown voltage (VBR) at 1 mA, 64.8 V clamping voltage (VC) at 6.2 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the BZW04-40-E3/54 datasheet, BZW04-40-E3/54 pinout, BZW04-40-E3/54 application, or BZW04-40-E3/54 equivalent, this page delivers verified electrical parameters, DO-41 terminal mapping, AEC-Q101 qualification status, clamping performance under surge conditions, and direct alternatives for circuit-level ESD and lightning transient suppression.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical VBR, VC, and IPPM specifications across forward and reverse directions. Its glass-passivated junction enables fast response time (<1 ns) and low incremental surge resistance, critical for protecting sensitive MOSFET gates and analog front-ends against inductive switching transients.
The device complies with AEC-Q101 for automotive use and supports 175 °C maximum junction temperature. Its 1.0 µA max reverse leakage at VWM ensures minimal standby power impact, while the 0.101 %/°C VBR temperature coefficient guarantees stable clamping behavior across industrial temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 40.2 V - Maximum continuous working voltage before conduction begins; defines safe operating margin for 36 V nominal systems. |
| VBR (min/max) | 44.7 V / 49.4 V at 1 mA - Confirmed breakdown threshold range; ensures reliable triggering above system overvoltage thresholds. |
| VC @ IPPM | 64.8 V at 6.2 A - Clamped voltage during 10/1000 µs surge; limits stress on downstream ICs to safe levels. |
| PPPM | 400 W - Peak pulse power handling capability; sustains repetitive 0.01 % duty cycle surges without degradation. |
| IPPM | 6.2 A - Peak pulse current capacity per 10/1000 µs waveform; determines minimum series impedance required for compliance. |
| TJ max. | 175 °C - Maximum junction temperature; enables operation in under-hood automotive and high-ambient industrial environments. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD47. |
Pinout & Package
DO-41 (DO-204AL) axial-leaded package with matte tin-plated leads solderable per J-STD-002 and JESD22-B102; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient conduction path | Leads are interchangeable; device conducts identically in either direction upon exceeding VBR. |
| Lead 1 | Terminal connection point | Standard axial lead; requires ≥2.0 mm PCB pad clearance for 275 °C solder dip compatibility. |
| Lead 2 | Terminal connection point | Matches Lead 1 mechanically and electrically; no functional distinction in bidirectional mode. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables <1 ns response time and stable long-term leakage performance under thermal cycling. |
| 400 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity when paired with appropriate series impedance. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS sensor protection without derating. |
| UL 94 V-0 epoxy molding | Prevents flame propagation in enclosed enclosures; meets IPC-CC-830B coating requirements for harsh environments. |
| JESD201 Class 1A whisker resistance | E3 suffix ensures no tin whisker growth under 1500 hr storage at 150 °C, critical for high-reliability aerospace and medical systems. |
Applications
| Automotive Sensor Protection | Industrial PLC Analog Input |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and Hall-effect sensors from load dump and ISO 7637-2 pulses in 12 V vehicle networks. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector interface to shunt transients before reaching signal conditioning ICs. Use Value: Limits induced voltage to ≤64.8 V during 10/1000 µs surges, preserving integrity of 5 V or 3.3 V microcontrollers and ADCs downstream. |
Use Scenario: Safeguarding 4–20 mA current loop inputs in programmable logic controllers exposed to field wiring surges and ESD events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input terminals, coordinated with series current-limiting resistor and filtering capacitor. Use Value: Maintains <1.0 µA leakage at 40.2 V, preventing measurement drift in precision analog circuits while responding within nanoseconds to fast transients. |
| Telecom Line Interface | Consumer Power Adapter Output |
|
Use Scenario: Shielding Ethernet PHYs and DSL line drivers from lightning-induced surges on outdoor-facing ports per ITU-T K.20/K.21. IC Role / Device Role / Timing Role: First-stage transient suppressor in multi-stage protection scheme, absorbing bulk energy before secondary TVS or GDT stages. Use Value: Delivers 400 W pulse power handling with 0.101 %/°C VBR stability, ensuring consistent clamping across -40 °C to +85 °C ambient ranges. |
Use Scenario: Secondary-side overvoltage protection on 5 V/9 V/12 V USB-C and wall adapter outputs subject to capacitive discharge and hot-plug transients. IC Role / Device Role / Timing Role: Standoff-clamp device placed after DC-DC converter output filter to prevent latch-up or damage to connected devices. Use Value: Provides 64.8 V clamping ceiling with only 1.0 µA leakage at rated VWM, eliminating standby power penalty in always-on consumer electronics. |
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; 400 W rating; 40 V VWM; 64.5 V VC at 6.2 A; same 10/1000 µs waveform. | Surface-mount footprint; higher thermal resistance than DO-41; better suited for automated assembly but less robust for manual repair. | Select SMBJ40CA when board space is constrained and reflow compatibility is required; verify PCB pad thermal relief for 175 °C TJ operation. |
| 1.5KE40CA | DO-201AD package; 1500 W rating; 40 V VWM; 64.3 V VC at 23.3 A; larger case size and higher surge capacity. | Higher energy absorption for infrequent but severe transients (e.g., AC mains coupling); not AEC-Q101 qualified. | Choose 1.5KE40CA for non-automotive industrial equipment requiring >10× single-event surge margin; avoid where AEC-Q101 or footprint size is mandatory. |
Compared with BZW04-40-E3/54, SMBJ40CA offers SMT compatibility at the cost of reduced thermal mass and manual serviceability, while 1.5KE40CA provides greater single-pulse robustness but lacks automotive qualification and introduces larger mechanical footprint - making BZW04-40-E3/54 optimal for cost-sensitive, AEC-Q101–required through-hole designs with moderate surge exposure.
Availability
BZW04-40-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, and telecom line protection requiring stable component supply, RoHS-compliant sourcing, and AEC-Q101 assurance.
Supply support for BZW04-40-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 is a global leader in discrete semiconductors, specializing in high-reliability diodes, rectifiers, and protection devices with emphasis on automotive, industrial, and computing applications.
The BZW04 series was engineered specifically for bidirectional transient suppression in harsh environments, combining AEC-Q101 qualification, glass-passivated junctions, and DO-41 mechanical robustness for mission-critical overvoltage defense.
FAQ
What is the polarity configuration of BZW04-40-E3/54?
BZW04-40-E3/54 is a bidirectional TVS diode with symmetrical conduction characteristics in both forward and reverse directions. It has no cathode marking and both leads are functionally identical - enabling straightforward placement in AC-coupled or differential signal paths without orientation concerns. This configuration is confirmed in the Vishay datasheet section "Polarity" and validated by identical VBR, VC, and IPPM values in both directions for the B-suffix variant.
Is BZW04-40-E3/54 qualified for automotive applications?
Yes, BZW04-40-E3/54 carries the HE3 suffix in its qualified variant (BZW04-40HE3/54), which is explicitly AEC-Q101 qualified per the Vishay datasheet revision 16-Sep-2021. The E3/54 part itself is commercial grade but shares identical electrical and thermal specs; for automotive deployment, the HE3 version must be specified to guarantee full qualification testing including HTGB, TC, and H3TRB.
What is the maximum clamping voltage of BZW04-40-E3/54 under surge conditions?
The maximum clamping voltage (VC) of BZW04-40-E3/54 is 64.8 V at 6.2 A peak pulse current with a 10/1000 µs waveform, as specified in the Electrical Characteristics table on page 2 of the Vishay document 88316. This value represents the upper limit of voltage imposed on protected circuitry during standardized surge events and is measured at TA = 25 °C.
Does BZW04-40-E3/54 have a defined junction capacitance value?
No junction capacitance (CJ) value is published for BZW04-40-E3/54 in the Vishay datasheet document 88316. While Figure 4 shows typical CJ curves for the BZW04 family, it does not provide discrete values per part number - only general trends versus VBR and bias voltage. For high-frequency signal line protection, designers should refer to the generic curve or select a TVS with documented CJ (e.g., SMAJ40CA) if capacitance is a design constraint.
What is the lead finish and solderability specification for BZW04-40-E3/54?
BZW04-40-E3/54 features matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards. The E3 suffix confirms JESD201 Class 1A whisker resistance, and the device withstands solder dip at 275 °C for up to 10 seconds per JESD22-B106 - supporting both wave and selective soldering processes in high-volume manufacturing.
BZW04-40-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:
- 1
- Bidirectional Channels:
- -
- 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)
BZW04-40-E3/54 FAQ
1.How can I place an order for BZW04-40-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-40-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 BZW04-40-E3/54 reliable?
The price and inventory of BZW04-40-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 BZW04-40-E3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-40-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-40-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-40-E3/54?
BZW04-40-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-40-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 BZW04-40-E3/54?
For technical support, including BZW04-40-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-40-E3/54 requirements.
6.How does Aetrix verify that BZW04-40-E3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-40-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 BZW04-40-E3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-40-E3/54?
All BZW04-40-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-40-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 BZW04-40-E3/54 part is unused and in its original packaging.
Return procedure for BZW04-40-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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