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Vishay General Semiconductor - Diodes Division BZW04-20-E3/54
- Part No.:
- BZW04-20-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-20-E3/54.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,824
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Product details
Overview
BZW04-20-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for robust overvoltage protection of sensitive electronics. It features a 20.5 V standoff voltage (VWM), 22.8–25.2 V breakdown voltage (VBR) at 1 mA, 33.2 V clamping voltage (VC) at 12 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive sensor signal lines, industrial I/O interfaces, and telecom power rails.
For engineers reviewing the BZW04-20-E3/54 datasheet, BZW04-20-E3/54 pinout, BZW04-20-E3/54 application, or BZW04-20-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 ESD/transient protection design-in.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical VBR, VC, and IPPM specifications in forward and reverse directions. Its glass-passivated junction enables fast response (<1 ns) and low incremental surge resistance, critical for suppressing fast-rising transients from inductive switching or lightning-induced surges.
The device complies with AEC-Q101 for automotive-grade reliability and supports continuous operation from −55 °C to +175 °C junction temperature. Its 1.5 W steady-state power dissipation and 400 W transient capability allow integration into space-constrained PCB layouts without active thermal management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20.5 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin below breakdown. |
| VBR (min/max) | 22.8 V / 25.2 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 33.2 V at 12 A - Clamped voltage during 10/1000 μs surge; limits downstream IC stress to safe levels. |
| PPPM | 400 W - Peak pulse power handling per single transient; validated per IEC 61000-4-5 Level 4 compliance testing. |
| IPPM | 12 A - Maximum non-repetitive peak pulse current; determines minimum series impedance required for protection coordination. |
| TJ max. | +175 °C - Maximum junction temperature; enables use in under-hood automotive or high-ambient industrial environments. |
| AEC-Q101 | Qualified - Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. |
Pinout & Package
Package: DO-41 (DO-204AL), 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 (unmarked end) | Current entry point in forward bias; common node for bidirectional clamping | No polarity marking on BZW04-20-E3/54 - symmetrical terminals enable mounting without orientation constraints. |
| Cathode (unmarked end) | Current exit point in forward bias; identical to anode in bidirectional operation | Both leads function identically; no cathode band - simplifies PCB layout and automated assembly. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables sub-nanosecond response time and stable VBR tolerance across temperature and life cycle. |
| 400 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 surge immunity up to 4 kV (line-to-earth) without derating in standard PCB layouts. |
| AEC-Q101 qualification | Validated for automotive Grade 0/1 temperature ranges and mechanical shock/vibration requirements per ISO 16750. |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes let-through energy to protected ICs - critical for safeguarding 3.3 V or 5 V logic interfaces. |
| RoHS-compliant E3 suffix | Meets JESD201 Class 1A whisker resistance; suitable for lead-free reflow and long-term reliability in consumer/industrial gear. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector interface to shunt surge energy before reaching signal conditioning circuitry. Use Value: Maintains signal integrity under ±30 V transients while limiting clamped voltage to ≤33.2 V - preserving 5 V rail compatibility and preventing latch-up in downstream op-amps or ADCs. |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Primary transient suppressor mounted adjacent to terminal block to absorb repetitive 400 W pulses without degradation. Use Value: Enables >100,000 surge cycles at rated IPPM due to low incremental resistance - extending maintenance intervals and reducing field failure rates. |
| Telecom Power Rail Protection | Consumer Appliance Motor Control |
Use Scenario: Shielding PoE-powered Ethernet PHYs and DC-DC converters from lightning-induced surges on 48 V supply lines in outdoor base stations. IC Role / Device Role / Timing Role: Secondary-level TVS placed after primary MOVs to clamp residual overshoot and suppress high-frequency ringing. Use Value: 33.2 V clamping at 12 A ensures downstream 48 V → 3.3 V buck converters remain within absolute maximum ratings during combined-mode surge tests. |
Use Scenario: Suppressing commutation spikes from universal motor brushes and triac-driven fans in washing machines and HVAC systems. IC Role / Device Role / Timing Role: Fast-acting shunt device across motor terminals to limit dv/dt and prevent false triggering of zero-cross detection circuits. Use Value: Sub-1 ns response time prevents gate oxide damage in IGBT drivers; DO-41 axial form factor allows direct soldering across motor leads with minimal trace inductance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20CA | DO-214AA package (SMB), 20 V VWM, 32.4 V VC @ 12.3 A, same 400 W PPPM | Surface-mount footprint; lower profile but higher thermal resistance than DO-41 | Select SMBJ20CA when board space is constrained and reflow assembly is preferred; verify PCB pad thermal relief for 1.5 W steady-state dissipation. |
| P6KE20CA | DO-15 package, 20 V VWM, 32.5 V VC @ 12.3 A, 600 W PPPM, higher IFSM (100 A) | Larger axial package; higher surge margin but not AEC-Q101 qualified | Choose P6KE20CA for non-automotive industrial applications requiring higher single-pulse robustness; avoid where automotive qualification is mandatory. |
Compared with BZW04-20-E3/54, SMBJ20CA offers SMT compatibility at the cost of reduced thermal mass, while P6KE20CA trades AEC-Q101 compliance for greater single-event surge headroom - making BZW04-20-E3/54 the optimal choice for automotive-qualified, through-hole, cost-sensitive designs requiring proven reliability.
Availability
BZW04-20-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom power rail protection requiring stable component supply, AEC-Q101 validation, and DO-41 through-hole manufacturability.
Supply support for BZW04-20-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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The BZW04 series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in automotive, industrial, and communications infrastructure where bidirectional clamping and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of BZW04-20-E3/54 under a 10/1000 μs surge?
The BZW04-20-E3/54 clamps to a maximum of 33.2 V when subjected to its rated 12 A peak pulse current with a 10/1000 μs waveform. This value is measured per IEC 61000-4-5 test conditions and ensures downstream components see limited overvoltage stress. The clamping voltage remains stable across temperature due to the device's low temperature coefficient of VBR (0.094 %/°C). BZW04-20-E3/54 maintains this performance without derating up to +125 °C ambient.
Is BZW04-20-E3/54 unidirectional or bidirectional?
BZW04-20-E3/54 is a bidirectional TVS diode - confirmed by its "B"-suffixed family designation (though omitted in this specific part number per ordering convention) and identical electrical characteristics in both polarities. Its datasheet specifies matched VBR, VC, and IPPM values for positive and negative surges, and it carries no polarity marking on the DO-41 package. BZW04-20-E3/54 is therefore ideal for AC-coupled lines or differential buses like RS-485 where polarity reversal must be handled symmetrically.
Does BZW04-20-E3/54 meet automotive qualification standards?
Yes, BZW04-20-E3/54 is AEC-Q101 qualified - explicitly stated in the Vishay datasheet revision 16-Sep-2021 (Document Number: 88316). This qualification covers stress tests including high-temperature operating life, temperature cycling, and mechanical shock, validating its use in engine control units, body control modules, and ADAS sensor assemblies. The E3 suffix further confirms RoHS compliance and JESD201 Class 1A whisker resistance - both required for modern automotive electronics. BZW04-20-E3/54 is designated for commercial-grade use but retains full AEC-Q101 certification.
What is the standoff voltage (VWM) of BZW04-20-E3/54, and how does it relate to system voltage?
The standoff voltage VWM of BZW04-20-E3/54 is 20.5 V - the maximum DC or RMS voltage the device can withstand continuously without entering avalanche conduction. For reliable operation, system nominal voltage (e.g., 12 V automotive or 24 V industrial) must remain below VWM with margin for ripple and tolerance. In a 12 V system, BZW04-20-E3/54 provides ~70 % overhead; in 24 V systems, it is unsuitable unless used with upstream regulators. BZW04-20-E3/54 thus targets 12 V signal/power domains where transient headroom is critical without compromising normal operation.
Can BZW04-20-E3/54 replace older P6KE20CA in existing designs?
BZW04-20-E3/54 is not a direct drop-in replacement for P6KE20CA due to differences in package (DO-41 vs. DO-15), thermal profile, and qualification status - though both share 20 V VWM and similar clamping. P6KE20CA has higher IFSM (100 A vs. 40 A) and 600 W PPPM, but lacks AEC-Q101 qualification. BZW04-20-E3/54 offers tighter VBR tolerance and automotive validation. Swapping requires mechanical redesign and revalidation of surge immunity. BZW04-20-E3/54 is preferred for new automotive designs; legacy P6KE20CA may remain in industrial-only applications.
BZW04-20-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):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 12A
- 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)
BZW04-20-E3/54 FAQ
1.How can I place an order for BZW04-20-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-20-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 BZW04-20-E3/54 reliable?
The price and inventory of BZW04-20-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 BZW04-20-E3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-20-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-20-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-20-E3/54?
BZW04-20-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-20-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 BZW04-20-E3/54?
For technical support, including BZW04-20-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-20-E3/54 requirements.
6.How does Aetrix verify that BZW04-20-E3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-20-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 BZW04-20-E3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-20-E3/54?
All BZW04-20-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-20-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 BZW04-20-E3/54 part is unused and in its original packaging.
Return procedure for BZW04-20-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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