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Vishay General Semiconductor - Diodes Division BZW04-342B-E3/54
- Part No.:
- BZW04-342B-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-342B-E3/54.pdf
- Description:
- TVS DIODE 342VWM 548VC DO204AL
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
BZW04-342B-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for robust overvoltage protection of signal and power lines. It features a 342 V standoff voltage (VWM), 380–420 V breakdown voltage (VBR) at 1 mA, 548 A peak pulse current (IPPM), and clamps transients to ≤548 V at rated surge-used in industrial motor drives, telecom line interfaces, and automotive body control modules.
For engineers reviewing the BZW04-342B-E3/54 datasheet, BZW04-342B-E3/54 pinout, BZW04-342B-E3/54 application, or BZW04-342B-E3/54 equivalent, this page delivers verified electrical specs, thermal derating behavior, DO-41 terminal mapping, AEC-Q101 qualification status, and direct alternatives for high-voltage transient suppression in harsh environments.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR min/max (380–420 V), clamping voltage (VC = 548 V), and leakage current (ID = 0.75 μA at VWM) in either direction. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance under repetitive 10/1000 μs pulses.
Rated for 400 W peak pulse power (PPPM) and 1.5 W steady-state dissipation, it supports operation from –55 °C to +175 °C junction temperature and complies with AEC-Q101 for automotive-grade reliability. The device exhibits a +0.110 %/°C temperature coefficient of VBR, enabling predictable voltage drift across thermal extremes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 342 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin for 300–330 V DC bus or AC line applications. |
| VBR (min/max) | 380 V / 420 V at 1 mA - Confirmed breakdown range ensures reliable turn-on during fast transients without premature conduction. |
| VC @ IPPM | 548 V - Clamping voltage at 548 A peak pulse current; limits downstream voltage stress during lightning or EFT events. |
| IPPM | 548 A - Peak surge current capability with 10/1000 μs waveform; withstands IEC 61000-4-5 Level 4 surges (4 kV/2 Ω). |
| ID @ VWM | 0.75 μA - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits. |
| TJ max. | +175 °C - Enables use in under-hood automotive, industrial inverters, and enclosed power supplies without thermal derating penalties. |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements including HTOL, TC, and HTRB. |
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 (Lead 1) | Current entry point in forward bias; common node in bidirectional configuration | No polarity marking on device; terminals are functionally symmetric-either lead serves as input or return depending on transient polarity. |
| Cathode (Lead 2) | Current exit point in forward bias; common node in bidirectional configuration | Identical electrical behavior to Anode; bidirectional operation eliminates need for orientation-dependent PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure. |
| 400 W peak pulse power (10/1000 μs) | Supports repeated surge events without degradation-critical for telecom central office and industrial PLC I/O protection. |
| AEC-Q101 qualification | Validated for automotive applications including body electronics, infotainment power rails, and sensor interface protection. |
| Low incremental surge resistance | Minimizes clamping overshoot during fast-rising transients (<1 ns rise time), improving protection margin for sensitive ICs. |
| UL 94 V-0 molding compound | Prevents flame propagation in fault conditions-required for safety-critical industrial and medical equipment designs. |
Applications
| Industrial Motor Drives | Telecom Line Interfaces |
|---|---|
Use Scenario: Protection of gate drivers and feedback sensing lines against switching-induced transients in 3-phase inverters. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across DC bus or isolated signal paths to limit voltage excursions during IGBT/MOSFET commutation. Use Value: Withstands 548 A surges while clamping to 548 V, preserving isolation barrier integrity and preventing latch-up in gate driver ICs like Si823x or UCC21520. |
Use Scenario: Surge protection on POTS or xDSL line cards exposed to lightning-induced longitudinal surges. IC Role / Device Role / Timing Role: Primary line-side TVS in hybrid coupler front-end, shunting common-mode energy before transformer input. Use Value: 342 V VWM allows compatibility with -48 V nominal telecom systems; 548 V VC ensures compliance with ITU-T K.20/21/44 immunity requirements. |
| Automotive Body Control Modules | AC Power Input Stages |
Use Scenario: Protection of LIN bus transceivers and window lift motor controllers against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Secondary-level TVS on 12 V supply rail and signal lines, coordinated with primary fuses and upstream TVS arrays. Use Value: AEC-Q101 qualification and +175 °C TJ max guarantee operation in engine bay environments; bidirectional symmetry simplifies layout for dual-rail protection. |
Use Scenario: Input-stage transient suppression for switch-mode power supplies connected to 230 V AC mains. IC Role / Device Role / Timing Role: Parallel-connected TVS across bridge rectifier output or bulk capacitor to clamp differential-mode surges. Use Value: 342 V VWM aligns with 230 V AC × √2 ≈ 325 V peak; 548 V VC provides ≥200 V margin above peak rectified voltage, avoiding 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 |
|---|---|---|---|
| SMBJ350CA | DO-214AA package; 350 V VWM; 388–428 V VBR; 400 W PPPM; 520 A IPPM; higher capacitance (~100 pF) | Suitable for surface-mount layouts; lower clamping voltage (520 V) but reduced surge margin vs. BZW04-342B-E3/54's 548 V VC | Select when board space constraints require SMD mounting and thermal management permits lower power density. |
| P6SMB350CA | DO-214AA package; identical 350 V VWM and 388–428 V VBR; same 400 W PPPM; 520 A IPPM; RoHS-compliant, non-AEC-Q101 | Commercial-grade alternative; lacks automotive qualification; slightly tighter VBR tolerance (±5 % vs. ±6 %) | Choose for cost-sensitive industrial or consumer applications where AEC-Q101 is not mandated. |
Compared with SMBJ350CA and P6SMB350CA, the BZW04-342B-E3/54 offers through-hole DO-41 robustness, AEC-Q101 validation, and superior clamping margin (548 V VC) at the expense of footprint size-making it preferred for high-reliability, high-surge, or thermally constrained through-hole designs.
Availability
BZW04-342B-E3/54 is available at Aetrix Electronics and suitable for industrial motor drives, telecom line interfaces, and automotive body control modules requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for BZW04-342B-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 for high-energy transient suppression in automotive, industrial, and telecom infrastructure-prioritizing clamping precision, surge endurance, and qualification-grade consistency.
FAQ
What is the maximum clamping voltage of the BZW04-342B-E3/54 under rated surge conditions?
The BZW04-342B-E3/54 has a maximum clamping voltage (VC) of 548 V when subjected to its rated 548 A peak pulse current with a 10/1000 μs waveform. This value is measured per IEC 61000-4-5 test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The BZW04-342B-E3/54 maintains this clamping performance across its full operating temperature range.
Is the BZW04-342B-E3/54 qualified for automotive applications?
Yes, the BZW04-342B-E3/54 carries AEC-Q101 qualification, confirming its suitability for automotive electronics including body control modules, infotainment power supplies, and sensor interfaces. This qualification covers stress tests such as high-temperature operating life (HTOL), temperature cycling (TC), and highly accelerated stress testing (HAST). The BZW04-342B-E3/54 meets these requirements as a bidirectional TVS with DO-41 packaging.
What does the "B" suffix indicate in BZW04-342B-E3/54?
The "B" suffix in BZW04-342B-E3/54 denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression in both polarities-no cathode marking is present, and either lead may serve as anode or cathode depending on transient direction. This differs from unidirectional variants (e.g., BZW04-342-E3/54), which feature a band-marked cathode and conduct only in reverse bias. The BZW04-342B-E3/54's bidirectional behavior is confirmed in its electrical characteristics table.
What is the standoff voltage (VWM) and why is it critical for BZW04-342B-E3/54 selection?
The BZW04-342B-E3/54 has a standoff voltage (VWM) of 342 V, representing the maximum continuous DC or RMS voltage the device can block without entering avalanche conduction. This parameter is critical because it must exceed the normal operating voltage of the protected line-e.g., 342 V VWM supports use on 300 V DC bus rails or 230 V AC inputs (325 V peak)-while maintaining low leakage (<0.75 μA). Selecting a BZW04-342B-E3/54 with insufficient VWM risks thermal runaway or premature failure.
How does the DO-41 package of BZW04-342B-E3/54 impact thermal performance compared to SMD alternatives?
The DO-41 package of the BZW04-342B-E3/54 provides superior thermal mass and lead-frame heat spreading versus SMD packages like DO-214AA, enabling higher sustained power dissipation (1.5 W at TL = 75 °C) and improved surge energy handling. Its axial leads facilitate direct heatsinking via lead bending or chassis mounting, reducing junction-to-ambient thermal resistance. While less space-efficient than SMD, the DO-41 construction enhances reliability in high-vibration or thermally cyclic environments where the BZW04-342B-E3/54 is deployed.
BZW04-342B-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):
- 342V
- Voltage - Breakdown (Min):
- 380V
- Voltage - Clamping (Max) @ Ipp:
- 548V
- Current - Peak Pulse (10/1000µs):
- 750mA
- 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)
BZW04-342B-E3/54 FAQ
1.How can I place an order for BZW04-342B-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-342B-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 BZW04-342B-E3/54 reliable?
The price and inventory of BZW04-342B-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 BZW04-342B-E3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-342B-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-342B-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-342B-E3/54?
BZW04-342B-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-342B-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 BZW04-342B-E3/54?
For technical support, including BZW04-342B-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-342B-E3/54 requirements.
6.How does Aetrix verify that BZW04-342B-E3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-342B-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 BZW04-342B-E3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-342B-E3/54?
All BZW04-342B-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-342B-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 BZW04-342B-E3/54 part is unused and in its original packaging.
Return procedure for BZW04-342B-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04-342B-E3/54 Tags
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