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Vishay General Semiconductor - Diodes Division BZW04-7V8-E3/54
- Part No.:
- BZW04-7V8-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-7V8-E3/54.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,651
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Product details
Overview
BZW04-7V8-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for circuit-level ESD and surge protection. It features 7.78 V standoff voltage (VWM), 8.65–9.55 V breakdown voltage (VBR) at 1 mA, 13.4 V clamping voltage (VC) at 30 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - used to protect signal lines and IC inputs in automotive sensor interfaces and industrial control I/O.
For engineers reviewing the BZW04-7V8-E3/54 datasheet, BZW04-7V8-E3/54 pinout, BZW04-7V8-E3/54 application, or BZW04-7V8-E3/54 equivalent, this page delivers verified electrical parameters, DO-41 terminal mapping, bidirectional clamping behavior, AEC-Q101 qualification status, and direct alternatives for overvoltage protection design-in.
Technical Context
This device operates as a bidirectional avalanche diode, symmetrically clamping transient voltages above ±8.65 V in either polarity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<50 μA at VWM), while the 10/1000 μs surge response supports repetitive 0.01% duty cycle events without degradation.
Designed for unclamped inductive switching transients and ESD events per IEC 61000-4-2, it exhibits 0.073 %/°C temperature coefficient of VBR and maintains operation across –55 °C to +175 °C junction temperature range - enabling use in under-hood automotive modules and industrial PLC field terminals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.78 V - maximum continuous reverse operating voltage before conduction begins |
| VBR (min/max) | 8.65 V / 9.55 V at 1 mA - guaranteed avalanche onset range defining clamping threshold |
| VC @ IPPM | 13.4 V at 30 A - peak clamped voltage during 10/1000 μs surge, limiting stress on downstream ICs |
| PPPM | 400 W - peak pulse power handling capability under standardized surge waveform |
| ID @ VWM | <50 μA - low leakage ensures minimal standby current impact on high-impedance signal paths |
| TJ max | +175 °C - extended thermal rating supports placement near heat-generating components |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with axial leads; no polarity marking for bidirectional configuration - both terminals are functionally identical and interchangeable in circuit layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals conduct identically during positive or negative surges - no orientation required during placement |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| 400 W 10/1000 μs rating | Protects against common lightning-induced surges and inductive switch-off transients in 24 V systems |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics modules |
| UL 94 V-0 molding compound | Meets flammability safety requirements for enclosed industrial and transportation equipment |
| Matte tin-plated leads | Guarantees solderability per J-STD-002 and JESD22-B102, supporting automated assembly processes |
Applications
| Automotive Sensor Interface | Industrial PLC Digital Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends from load dump and ESD events in vehicle cabin modules. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt transients before reaching ASIC input pins. Use Value: Limits voltage excursion to ≤13.4 V during 30 A surge, preserving integrity of 5 V tolerant interface circuits without adding series impedance. |
Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp mounted across input terminals to absorb repetitive 400 W pulses from inductive loads. Use Value: Enables robust operation at ambient temperatures up to +85 °C with no derating required below 75 °C lead temperature. |
| Consumer Appliance Control Board | Telecom Line Interface |
Use Scenario: Shielding microcontroller GPIOs and communication lines in washing machine control boards from motor drive noise and power supply transients. IC Role / Device Role / Timing Role: Low-leakage (≤50 μA) TVS placed adjacent to MCU pins to prevent latch-up during ESD discharge. Use Value: Maintains signal integrity on 3.3 V/5 V logic lines while surviving >10,000 contact ESD events per IEC 61000-4-2 Level 4. |
Use Scenario: Protecting Ethernet PHY and RS-485 transceivers in network edge devices from induced surges on long cable runs. IC Role / Device Role / Timing Role: Secondary protection stage following gas discharge tube (GDT), providing fast-response clamping after GDT ionization delay. Use Value: Fast response time and low dynamic impedance reduce let-through energy to <10 mJ, preventing transceiver damage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0CA | DO-214AA package; 7.0 V VWM, 12.6 V VC @ 32.1 A; same 400 W rating but higher capacitance (~150 pF) | Preferred where board space allows SMD mounting and lower clamping voltage is critical | Select SMBJ7.0CA when surface-mount layout and tighter VC margin outweigh through-hole assembly preference |
| P6KE7.8CA | DO-15 package; 7.8 V VWM, 13.6 V VC @ 29.4 A; 600 W rating but larger footprint and slower response | Suitable for cost-sensitive industrial power supplies where higher surge margin compensates for slower clamping | Choose P6KE7.8CA only if legacy DO-15 footprint compatibility and higher single-pulse energy absorption are prioritized |
Compared with BZW04-7V8-E3/54, SMBJ7.0CA offers lower clamping and SMD fit but requires PCB rework, while P6KE7.8CA provides greater single-event energy handling in a larger axial package - making BZW04-7V8-E3/54 the optimal balance of compact DO-41 size, AEC-Q101 qualification, and precise 7.78 V standoff for modern automotive and industrial signal line protection.
Availability
BZW04-7V8-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC digital inputs, and consumer appliance control boards requiring stable component supply with full traceability and lifecycle management.
Supply support for BZW04-7V8-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 diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The BZW04 series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, bidirectional transient suppression in harsh environments including automotive, industrial automation, and telecom infrastructure.
FAQ
What is the polarity configuration of BZW04-7V8-E3/54?
BZW04-7V8-E3/54 is a bidirectional TVS diode, meaning it provides symmetrical clamping for both positive and negative transients. Unlike unidirectional variants, it has no cathode marking and both leads are electrically identical - eliminating orientation concerns during PCB assembly and enabling flexible placement in AC-coupled or differential signal paths.
Is BZW04-7V8-E3/54 qualified for automotive applications?
Yes, BZW04-7V8-E3/54 is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias, temperature cycling, and highly accelerated life testing. This certification confirms its suitability for automotive subsystems such as body control modules, ADAS sensor interfaces, and infotainment system I/O protection where reliability under thermal and mechanical stress is mandatory.
What does the "E3/54" suffix indicate in BZW04-7V8-E3/54?
The "E3" denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting JESD201 Class 1A whisker resistance, while "/54" specifies the packaging format: 13-inch diameter paper tape and reel containing 550 units. This packaging enables seamless integration into automated pick-and-place manufacturing lines without manual handling or re-taping.
How does BZW04-7V8-E3/54 compare to unidirectional TVS diodes like BZW04-7V8?
BZW04-7V8-E3/54 differs from the unidirectional BZW04-7V8 by offering symmetrical clamping behavior and absence of polarity marking. While both share identical VWM (7.78 V), VBR, and PPPM (400 W), the unidirectional version requires correct anode/cathode orientation and supports forward conduction - making BZW04-7V8-E3/54 preferable for AC signal lines, differential buses, and space-constrained layouts where polarity awareness adds complexity.
What is the maximum junction temperature rating for BZW04-7V8-E3/54?
The maximum junction temperature (TJ) for BZW04-7V8-E3/54 is +175 °C, allowing operation in high-ambient environments such as engine compartments or sealed industrial enclosures. This rating is supported by its glass-passivated chip construction and DO-41 package thermal path, enabling reliable performance without derating up to 75 °C lead temperature per Vishay's power derating curve.
BZW04-7V8-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):
- 7.78V
- Voltage - Breakdown (Min):
- 8.65V
- Voltage - Clamping (Max) @ Ipp:
- 13.4V
- Current - Peak Pulse (10/1000µs):
- 30A
- 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)
BZW04-7V8-E3/54 FAQ
1.How can I place an order for BZW04-7V8-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-7V8-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 BZW04-7V8-E3/54 reliable?
The price and inventory of BZW04-7V8-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 BZW04-7V8-E3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-7V8-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-7V8-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-7V8-E3/54?
BZW04-7V8-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-7V8-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 BZW04-7V8-E3/54?
For technical support, including BZW04-7V8-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-7V8-E3/54 requirements.
6.How does Aetrix verify that BZW04-7V8-E3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-7V8-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 BZW04-7V8-E3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-7V8-E3/54?
All BZW04-7V8-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-7V8-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 BZW04-7V8-E3/54 part is unused and in its original packaging.
Return procedure for BZW04-7V8-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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