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Vishay General Semiconductor - Diodes Division BZW04P85-E3/54
- Part No.:
- BZW04P85-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P85-E3/54.pdf
- Description:
- TVS DIODE 85.5VWM 137VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,725
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Product details
Overview
BZW04P85-E3/54 from Vishay General Semiconductor is a bi-directional TransZorb® transient voltage suppressor (TVS) diode designed for robust overvoltage protection in signal and power lines. It features a 85.5 V stand-off voltage (VWM), 137 V maximum clamping voltage (VC) at 2.9 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - deployed to safeguard MOSFETs, ICs, and sensor interfaces against inductive switching transients and ESD in industrial and automotive electronics.
For engineers reviewing the BZW04P85-E3/54 datasheet, BZW04P85-E3/54 pinout, BZW04P85-E3/54 application, or BZW04P85-E3/54 equivalent, key selection criteria include its DO-41 (DO-204AL) axial package, AEC-Q101 qualification, bi-directional symmetry, low leakage (<1 µA at VWM), and temperature coefficient of breakdown voltage (0.106 %/°C).
Technical Context
The BZW04P85-E3/54 operates as a bi-directional avalanche diode, leveraging glass-passivated junction technology to deliver symmetrical clamping in both polarities. Its 10/1000 µs surge response enables reliable suppression of lightning-induced surges and inductive kickback without polarity sensitivity.
It exhibits a 0.106 %/°C temperature coefficient of breakdown voltage, ensuring stable VBR across -55 °C to +175 °C operating range, and maintains <1 µA reverse leakage at 85.5 V, supporting low-power sensor line protection without signal degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 85.5 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 72–85 V DC bus or signal lines. |
| VC @ IPPM | 137 V - Clamped voltage at 2.9 A peak pulse current; limits downstream device stress during 400 W transient events. |
| PPPM | 400 W - Peak pulse power handling with 10/1000 µs waveform; supports IEC 61000-4-5 Level 3 surge immunity. |
| IPPM | 2.9 A - Peak pulse current capability; sufficient to absorb typical 100 V/50 Ω surge generator outputs. |
| TJ max | +175 °C - Maximum junction temperature; enables use in under-hood automotive and high-ambient industrial environments. |
| Leakage @ VWM | <1 µA - Ultra-low reverse leakage ensures minimal loading on high-impedance sensor or communication lines. |
| Temp. Coeff. VBR | 0.106 %/°C - Predictable VBR drift over temperature; critical for precision protection in wide-temperature applications. |
Pinout & Package
Package: DO-204AL (DO-41), axial leaded, epoxy-molded case meeting UL 94 V-0 flammability rating; matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (bi-directional) | Transient conduction path | No polarity marking; symmetric terminals conduct equally in either direction during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable avalanche breakdown and long-term reliability under repetitive surge stress. |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per stress test requirements. |
| 400 W 10/1000 µs pulse rating | Meets IEC 61000-4-5 surge immunity for industrial control and telecom infrastructure applications. |
| Bi-directional symmetry | Eliminates need for polarity-aware layout; simplifies PCB design for AC-coupled or floating signal lines. |
| RoHS-compliant & whisker-tested (JESD201 Class 1A) | Ensures environmental compliance and mitigates tin whisker risk in high-reliability solder joints. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bi-directional TVS clamp placed directly at connector entry point to shunt transients before reaching signal conditioning circuitry. Use Value: Maintains signal integrity under 12 V/24 V automotive supply conditions while surviving repeated 100 V/50 Ω surge events per ISO 16750-2. |
Use Scenario: Shielding digital input modules from inductive kickback generated by solenoid valves and relay coils in factory automation systems. IC Role / Device Role / Timing Role: Standoff protection element across 24 V DC input lines, triggered only during >85.5 V transients to avoid false triggering. Use Value: Prevents latch-up or damage to optocouplers and microcontrollers without affecting normal 24 V logic-level recognition. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Safeguarding Ethernet PHY front-end and PoE interface components against lightning-induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Primary surge suppression stage upstream of common-mode chokes and secondary TVS arrays. Use Value: Limits induced common-mode voltage to ≤137 V, enabling downstream protection to handle residual differential energy. |
Use Scenario: Secondary-side overvoltage clamping on DC output rails of AC/DC adapters for smart home devices. IC Role / Device Role / Timing Role: Fast-response clamp protecting USB-PD controllers and buck regulators from output capacitor failure or feedback loop faults. Use Value: Activates within nanoseconds to hold rail voltage below 137 V, preventing catastrophic failure of downstream silicon. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ85CA | DO-214AA (SMB) package; 85 V VWM, 137 V VC, same 400 W rating but higher IPPM (3.2 A); surface-mount only. | Requires SMT reflow process and PCB real estate; unsuitable for through-hole legacy designs or high-vibration mechanical mounting. | Select SMBJ85CA when board space is constrained and automated assembly is used; verify thermal pad layout for 1.5 W steady-state dissipation. |
| 1.5KE85CA | DO-201AD package; 85 V VWM, 137 V VC, 1500 W PPPM; larger case, higher surge capacity but slower response due to higher junction capacitance (~150 pF vs. ~50 pF). | Better for high-energy lightning surges (IEC 61000-4-5 Level 4), less suitable for fast ESD or data-line protection where low capacitance is critical. | Choose 1.5KE85CA for primary AC mains or telecom line protection where energy absorption dominates speed requirements. |
Compared with BZW04P85-E3/54, SMBJ85CA offers SMT compatibility at the cost of mechanical robustness and repairability, while 1.5KE85CA trades faster response and lower capacitance for significantly higher surge energy handling - making BZW04P85-E3/54 optimal for cost-sensitive, through-hole, mid-energy protection in automotive and industrial control nodes.
Availability
BZW04P85-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, AEC-Q101 traceability, and DO-41 through-hole manufacturability.
Supply support for BZW04P85-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 application-specific performance.
The BZW04P series was developed for high-reliability transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where bi-directional symmetry, AEC-Q101 compliance, and stable parametric behavior over temperature are essential.
FAQ
What is the exact package type and lead finish of BZW04P85-E3/54?
BZW04P85-E3/54 uses the DO-204AL (DO-41) axial package with matte tin-plated leads. It meets J-STD-002 and JESD22-B102 solderability standards and passes JESD201 Class 1A whisker testing. The "E3" suffix confirms RoHS compliance and commercial-grade qualification.
Is BZW04P85-E3/54 unidirectional or bidirectional, and how is polarity identified?
BZW04P85-E3/54 is a bi-directional TVS diode - it provides symmetrical clamping in both polarities. Unlike unidirectional variants, it carries no cathode band marking; both leads are functionally identical, eliminating orientation concerns during placement.
What is the maximum clamping voltage of BZW04P85-E3/54 and at what test condition is it specified?
The maximum clamping voltage (VC) of BZW04P85-E3/54 is 137 V, measured at a peak pulse current (IPPM) of 2.9 A using the standardized 10/1000 µs double-exponential waveform per IEC 61000-4-5.
Does BZW04P85-E3/54 meet automotive qualification standards?
Yes - BZW04P85-E3/54 is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and surge endurance. This certification validates its suitability for automotive powertrain, body electronics, and ADAS sensor protection.
How does the temperature coefficient affect BZW04P85-E3/54's breakdown voltage across its operating range?
BZW04P85-E3/54 has a maximum temperature coefficient of 0.106 %/°C for breakdown voltage (VBR). Over its full -55 °C to +175 °C junction range, this results in approximately ±13.5 V drift from nominal VBR (95.0–110 V), ensuring predictable clamping behavior in extreme thermal environments.
BZW04P85-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 85.5V
- Voltage - Breakdown (Min):
- 95V
- Voltage - Clamping (Max) @ Ipp:
- 137V
- Current - Peak Pulse (10/1000µs):
- 2.9A
- 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)
BZW04P85-E3/54 FAQ
1.How can I place an order for BZW04P85-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P85-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 BZW04P85-E3/54 reliable?
The price and inventory of BZW04P85-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 BZW04P85-E3/54 is usually 5 days.
3.What payment methods are accepted for BZW04P85-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P85-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P85-E3/54?
BZW04P85-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P85-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 BZW04P85-E3/54?
For technical support, including BZW04P85-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P85-E3/54 requirements.
6.How does Aetrix verify that BZW04P85-E3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04P85-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 BZW04P85-E3/54 meets industry standards.
7.What is the process for return or replacement of BZW04P85-E3/54?
All BZW04P85-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P85-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 BZW04P85-E3/54 part is unused and in its original packaging.
Return procedure for BZW04P85-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04P85-E3/54 Tags
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