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Vishay General Semiconductor - Diodes Division BZW04-7V8BHE3/54
- Part No.:
- BZW04-7V8BHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-7V8BHE3/54.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:4,156
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Product details
Overview
BZW04-7V8BHE3/54 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 a 7.78 V stand-off 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 - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the BZW04-7V8BHE3/54 datasheet, BZW04-7V8BHE3/54 pinout, BZW04-7V8BHE3/54 application, or BZW04-7V8BHE3/54 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, DO-41 mechanical data, clamping performance under surge conditions, and direct alternatives for ESD/transient protection design-in.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with no polarity marking on the DO-41 package. Its glass-passivated junction enables fast response (<1 ns) to transient events and low incremental surge resistance for stable clamping behavior during repetitive 10/1000 μs surges at 0.01% duty cycle.
Rated for -55 °C to +175 °C operating junction temperature and qualified to AEC-Q101, the BZW04-7V8BHE3/54 supports automotive-grade reliability. It exhibits 50 μA maximum reverse leakage at VWM and a 0.073 %/°C temperature coefficient of VBR - critical for thermal stability in engine bay or industrial control environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.78 V - maximum continuous reverse working voltage before clamping initiates; sets upper limit for normal circuit operation. |
| VBR min/max | 8.65 V / 9.55 V at 1 mA - guaranteed breakdown threshold range; ensures predictable turn-on across production lots. |
| VC @ IPPM | 13.4 V at 30 A - clamped voltage during 10/1000 μs surge; defines worst-case overvoltage seen by protected IC. |
| PPPM | 400 W - peak pulse power handling with 10/1000 μs waveform; supports IEC 61000-4-5 Level 3/4 surge immunity. |
| ID @ VWM | 50 μA - reverse leakage at stand-off voltage; low enough to avoid signal integrity degradation in high-impedance nodes. |
| TJ max | +175 °C - maximum junction temperature; enables placement near heat sources in automotive or industrial PCBs. |
| AEC-Q101 | Qualified - validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
Pinout & Package
DO-41 (DO-204AL) axial-leaded package: matte tin-plated leads, UL 94 V-0 molded epoxy body, 0.205" ±0.025" (5.2 mm) body diameter, 1.0" minimum lead length. Bidirectional construction means no cathode marking; terminals are non-polarized.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both ends function identically; conducts surge current bidirectionally when voltage exceeds ±VBR. |
| Lead 1 / Lead 2 | PCB interconnect interface | Matte tin-plated, solderable per J-STD-002/JESD22-B102; supports wave/solder dip up to 275 °C for 10 s. |
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) | Withstands repeated IEC 61000-4-5 surge events without degradation in automotive or industrial environments. |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity bias, and mechanical shock per stress test plan. |
| Low clamping ratio (VC/VBR ≈ 1.44) | Minimizes overvoltage stress on downstream ICs - critical for protecting 3.3 V or 5 V logic interfaces. |
| DO-41 RoHS-compliant (HE3) | Meets JESD201 Class 2 whisker resistance; suitable for high-reliability industrial and automotive assembly. |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping device placed directly at connector entry point to shunt surge energy before it reaches signal conditioning circuitry. Use Value: Limits transient voltage to ≤13.4 V during 30 A surges, preserving integrity of 5 V rail and 3.3 V microcontroller I/O pins per ISO 7637-2 Pulse 1/2/5a. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and ±10 V analog inputs in programmable logic controllers against field-wiring induced surges and ESD. IC Role / Device Role / Timing Role: Primary line-level transient suppressor mounted adjacent to terminal block to clamp common-mode and differential-mode transients. Use Value: Maintains signal fidelity with only 50 μA leakage at 7.78 V, while surviving 400 W pulses without parameter shift across 10⁵ surge events. |
| Consumer Appliance Motor Control | Telecom Power Supply Input |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines, HVAC blowers, and power tools. IC Role / Device Role / Timing Role: Low-inductance TVS placed across motor terminals or H-bridge outputs to clamp flyback voltage during MOSFET turn-off. Use Value: Fast response and 175 °C TJ max enable mounting directly on motor driver PCBs near heat-generating FETs without derating. |
Use Scenario: Secondary-side transient protection on 12 V or 24 V telecom power distribution rails feeding baseband processors and RF modules. IC Role / Device Role / Timing Role: Standoff-clamp device bridging VCC-to-GND to absorb coupling noise from adjacent AC/DC converters and relay switching. Use Value: 0.073 %/°C VBR tempco ensures consistent clamping threshold across -40 °C to +85 °C ambient, preventing false triggering. |
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 (SMB), 7.0 V VWM, 100 W PPPM (vs. 400 W), higher VC (11.2 V @ 34.1 A) | Lower power rating limits use to lighter-duty consumer or telecom applications; not AEC-Q101 qualified | Select SMBJ7.0CA only if board space constraints require SMT packaging and surge requirements are ≤100 W. |
| P6KE7.8CA | DO-15 package, same 7.8 V VWM, 600 W PPPM, higher VC (12.6 V @ 47.6 A), no AEC-Q101 qualification | Higher surge capacity suits industrial mains-connected equipment but lacks automotive reliability validation | Choose P6KE7.8CA when higher peak power is needed and AEC-Q101 compliance is not required. |
Compared with SMBJ7.0CA and P6KE7.8CA, the BZW04-7V8BHE3/54 uniquely combines AEC-Q101 qualification, 400 W capability in through-hole DO-41, and tight 7.78 V VWM - making it the only option validated for automotive under-hood sensor protection where reliability and precise clamping voltage are jointly critical.
Availability
BZW04-7V8BHE3/54 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O hardening, and consumer appliance motor drive circuits requiring stable component supply with full traceability and lifecycle management.
Supply support for BZW04-7V8BHE3/54 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 and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices with emphasis on reliability, precision, and application-specific qualification.
The BZW04 series targets robust transient protection in harsh environments; its AEC-Q101 qualification and DO-41 ruggedization reflect Vishay's focus on automotive and industrial system-level surge resilience.
FAQ
What is the clamping voltage of BZW04-7V8BHE3/54 under a 30 A transient?
The BZW04-7V8BHE3/54 has a maximum clamping voltage (VC) of 13.4 V when subjected to a 30 A peak pulse current with a 10/1000 μs waveform. This value is specified in the Vishay datasheet (Document Number: 88316, page 2) and represents the worst-case voltage imposed on protected circuitry during standardized surge testing - a key parameter for ensuring downstream ICs remain within absolute maximum ratings.
Is BZW04-7V8BHE3/54 suitable for automotive applications?
Yes, BZW04-7V8BHE3/54 is AEC-Q101 qualified (note in datasheet page 4), confirming its suitability for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. The HE3 suffix denotes RoHS compliance and AEC-Q101 qualification, and the device operates reliably from -55 °C to +175 °C junction temperature - meeting under-hood environmental requirements.
What does the "B" suffix in BZW04-7V8BHE3/54 indicate?
The "B" suffix in BZW04-7V8BHE3/54 explicitly denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression in both polarities. Unlike unidirectional variants (e.g., BZW04-7V8HE3/54), it has no cathode marking and functions identically regardless of voltage polarity - essential for protecting AC-coupled or differential signal lines.
What is the reverse leakage current of BZW04-7V8BHE3/54 at its stand-off voltage?
At its 7.78 V stand-off voltage (VWM), the BZW04-7V8BHE3/54 exhibits a maximum reverse leakage current (ID) of 50 μA at 25 °C, as specified in the Electrical Characteristics table (page 2 of datasheet 88316). This low leakage ensures minimal loading on high-impedance sensor outputs or reference nodes while maintaining effective transient suppression capability.
What package type and lead finish does BZW04-7V8BHE3/54 use?
BZW04-7V8BHE3/54 uses the DO-41 (DO-204AL) axial-leaded package with matte tin-plated leads. The finish complies with J-STD-002 and JESD22-B102 solderability standards, and the HE3 suffix confirms JESD201 Class 2 whisker resistance - supporting reliable through-hole assembly in automotive and industrial manufacturing environments.
BZW04-7V8BHE3/54 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:
- -
- 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)
BZW04-7V8BHE3/54 FAQ
1.How can I place an order for BZW04-7V8BHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-7V8BHE3/54 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 BZW04-7V8BHE3/54 reliable?
The price and inventory of BZW04-7V8BHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-7V8BHE3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-7V8BHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-7V8BHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-7V8BHE3/54?
BZW04-7V8BHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-7V8BHE3/54 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 BZW04-7V8BHE3/54?
For technical support, including BZW04-7V8BHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-7V8BHE3/54 requirements.
6.How does Aetrix verify that BZW04-7V8BHE3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-7V8BHE3/54 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 BZW04-7V8BHE3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-7V8BHE3/54?
All BZW04-7V8BHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-7V8BHE3/54, 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 BZW04-7V8BHE3/54 part is unused and in its original packaging.
Return procedure for BZW04-7V8BHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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