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Vishay General Semiconductor - Diodes Division BZW04-7V8B-E3/54
- Part No.:
- BZW04-7V8B-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-7V8B-E3/54.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,422
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Product details
Overview
BZW04-7V8B-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 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 MOSFETs, sensor interfaces, and microcontroller I/O in automotive and industrial control systems.
For engineers reviewing the BZW04-7V8B-E3/54 datasheet, BZW04-7V8B-E3/54 pinout, BZW04-7V8B-E3/54 application, or BZW04-7V8B-E3/54 equivalent, key selection criteria include bidirectional clamping capability, low leakage (50 μA max at VWM), AEC-Q101 qualification, DO-41 mechanical compatibility, and thermal stability up to +175 °C junction temperature.
Technical Context
This device operates as a voltage-clamped surge protector with symmetrical bidirectional conduction - no polarity marking required. Its glass-passivated junction enables fast response (<1 ns) and low incremental surge resistance, critical for suppressing ESD and inductive switching spikes.
The 400 W peak pulse power rating is specified under standardized 10/1000 μs waveform conditions with 0.01% duty cycle, and derating begins above 25 °C ambient per Fig. 2. Junction temperature range spans −55 °C to +175 °C, supporting under-hood and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.78 V - maximum continuous reverse working voltage before clamping initiates; defines safe operating margin for 5 V–8 V signal/power rails. |
| VBR (min/max) | 8.65 V / 9.55 V at 1 mA - tight breakdown tolerance ensures predictable turn-on across production lots and temperature. |
| VC @ IPPM | 13.4 V at 30 A - clamping voltage limits transient energy delivered to downstream ICs during 10/1000 μs surges. |
| IPPM | 30 A - peak pulse current capacity determines survivability against common lightning/inductive-spike threats. |
| PPPM | 400 W - peak pulse power rating validates robustness under standardized surge test conditions (IEC 61000-4-5). |
| ID @ VWM | 50 μA max - low reverse leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits. |
| TJ max | +175 °C - extended junction temperature rating supports operation in engine control units and motor drives. |
Pinout & Package
DO-41 (DO-204AL) axial-leaded package with matte tin-plated leads; compliant with J-STD-002 and JESD22-B102 solderability standards. No polarity marking - symmetric bidirectional construction eliminates cathode/anode orientation concerns during placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically - enables installation without orientation check; simplifies PCB layout and automated assembly. |
| Lead 1 / Lead 2 | Connection to protected line | Direct connection between protected node (e.g., CAN bus, sensor output) and ground or rail; requires minimal trace inductance for effective clamping. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including powertrain and body electronics per stress-test requirements. |
| Glass passivated junction | Enables <1 ns response time and stable parametric performance across humidity and thermal cycling. |
| 400 W peak pulse power (10/1000 μs) | Withstands repetitive surge events in industrial motor controls and telecom line interfaces without degradation. |
| UL 94 V-0 molded epoxy case | Provides flame-retardant mechanical protection and long-term environmental reliability in enclosed enclosures. |
| RoHS-compliant (E3 suffix) | Meets EU Directive 2011/65/EU and JESD201 Class 1A whisker resistance for lead-free assembly. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog outputs of pressure/temperature sensors in engine control modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between sensor output and ground to shunt transients before reaching ADC input stage. Use Value: Prevents latch-up or damage to 12-bit SAR ADCs by limiting voltage excursion to ≤13.4 V during 30 A surges. |
Use Scenario: Safeguarding digital input channels of programmable logic controllers interfacing with 24 V DC field devices subject to inductive kickback. IC Role / Device Role / Timing Role: Line-to-ground TVS on each discrete input terminal to absorb energy from solenoid de-energization spikes. Use Value: Maintains functional safety integrity by ensuring input logic thresholds remain uncorrupted during 400 W transient events. |
| Consumer USB Port ESD Protection | Telecom Line Interface Surge Suppression |
Use Scenario: Secondary-level protection on USB 2.0 D+/D− lines behind primary ESD arrays in set-top boxes and smart displays. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp limiting differential-mode surges between data lines and chassis ground. Use Value: Adds 400 W surge margin without compromising signal rise/fall times due to absence of parasitic capacitance specification constraints. |
Use Scenario: Front-end protection on RS-485 transceiver bus lines in network infrastructure equipment subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Common-mode TVS pair (line-to-ground) on A/B bus terminals to clamp induced common-mode transients. Use Value: Enables compliance with ITU-T K.20/21 immunity requirements by clamping >30 A surges within 13.4 V envelope. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient 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 PPPM but higher IPPM. | Surface-mount footprint requires PCB redesign; better suited for space-constrained consumer boards. | Select SMBJ7.0CA only when SMT assembly and reduced board area outweigh through-hole reliability advantages. |
| P6KE7.8CA | DO-15 package; 7.8 V VWM, 13.6 V VC @ 29.4 A; lower PPPM (600 W peak but derated to 400 W at TA > 25 °C). | Legacy industrial stock item; wider VC tolerance increases risk of false triggering in precision analog circuits. | Prefer BZW04-7V8B-E3/54 over P6KE7.8CA where AEC-Q101 qualification and tighter VC consistency are mandatory. |
Compared with SMBJ7.0CA and P6KE7.8CA, BZW04-7V8B-E3/54 offers verified AEC-Q101 qualification, DO-41 axial mechanical robustness for high-vibration environments, and tighter VC specification - making it optimal for automotive and industrial through-hole designs requiring long-term reliability validation.
Availability
BZW04-7V8B-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply, full traceability, and lifecycle continuity support.
Supply support for BZW04-7V8B-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, rectifiers, and protection devices with emphasis on reliability, automotive qualification, and industrial-grade performance.
The BZW04 series targets high-energy transient suppression in harsh environments, with design focus on AEC-Q101 compliance, glass-passivated junction stability, and DO-41 mechanical ruggedness for under-hood and factory-floor applications.
FAQ
What is the clamping voltage of BZW04-7V8B-E3/54 at its rated peak pulse current?
The BZW04-7V8B-E3/54 has a maximum clamping voltage (VC) of 13.4 V at 30 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is measured per IEC 61000-4-5 test methodology and defines the upper voltage limit imposed on protected circuitry during surge events. The BZW04-7V8B-E3/54 maintains this clamping performance across its full operating temperature range.
Is BZW04-7V8B-E3/54 suitable for automotive applications?
Yes, BZW04-7V8B-E3/54 is AEC-Q101 qualified, confirming its suitability for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. The device meets stress-test requirements for temperature cycling, humidity, mechanical shock, and surge endurance. BZW04-7V8B-E3/54 is explicitly listed in Vishay's AEC-Q101 qualified product documentation with HE3 suffix variants - the E3/54 variant shares identical die and qualification baseline.
How does the bidirectional configuration of BZW04-7V8B-E3/54 affect PCB layout?
The bidirectional configuration of BZW04-7V8B-E3/54 eliminates polarity marking and allows unrestricted orientation during placement - both leads are functionally identical. This simplifies PCB layout by removing cathode/anode routing constraints and enabling direct line-to-ground or line-to-line placement without directional verification. BZW04-7V8B-E3/54's DO-41 package further supports manual rework and high-reliability through-hole mounting in vibration-prone environments.
What is the maximum reverse leakage current for BZW04-7V8B-E3/54 at its standoff voltage?
The maximum reverse leakage current (ID) for BZW04-7V8B-E3/54 is 50 μA at its 7.78 V standoff voltage (VWM) and 25 °C ambient temperature. This low leakage ensures minimal impact on high-impedance sensor outputs or battery-powered circuits. Leakage remains within specification up to +125 °C, with typical values decreasing at lower temperatures - critical for precision analog front-ends protected by BZW04-7V8B-E3/54.
Does BZW04-7V8B-E3/54 require heatsinking for standard operation?
No, BZW04-7V8B-E3/54 does not require external heatsinking for transient suppression duty cycles. Its 1.5 W steady-state power dissipation (PD) rating assumes operation on an infinite heatsink at 75 °C lead temperature, but normal TVS usage involves short-duration pulses (≤100 ms) with low duty cycle (0.01%). Thermal design focuses on minimizing trace inductance rather than heat removal - BZW04-7V8B-E3/54 relies on its 175 °C maximum junction temperature rating for transient energy absorption without thermal runaway.
BZW04-7V8B-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):
- 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)
BZW04-7V8B-E3/54 FAQ
1.How can I place an order for BZW04-7V8B-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-7V8B-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 BZW04-7V8B-E3/54 reliable?
The price and inventory of BZW04-7V8B-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 BZW04-7V8B-E3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-7V8B-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-7V8B-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-7V8B-E3/54?
BZW04-7V8B-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-7V8B-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 BZW04-7V8B-E3/54?
For technical support, including BZW04-7V8B-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-7V8B-E3/54 requirements.
6.How does Aetrix verify that BZW04-7V8B-E3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-7V8B-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 BZW04-7V8B-E3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-7V8B-E3/54?
All BZW04-7V8B-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-7V8B-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 BZW04-7V8B-E3/54 part is unused and in its original packaging.
Return procedure for BZW04-7V8B-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04-7V8B-E3/54 Tags
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