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Vishay General Semiconductor - Diodes Division BZW04-342-E3/54
- Part No.:
- BZW04-342-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-342-E3/54.pdf
- Description:
- TVS DIODE 342VWM 548VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,173
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Product details
Overview
BZW04-342-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 range (VBR at 1 mA), 548 V clamping voltage (VC) at 0.75 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - deployed in industrial sensor interfaces and automotive ECUs against inductive switching transients.
For engineers reviewing the BZW04-342-E3/54 datasheet, BZW04-342-E3/54 pinout, BZW04-342-E3/54 application, or BZW04-342-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 circuit-level ESD and lightning surge protection design.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical VBR, VC, and IPPM specifications across forward and reverse directions. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and low incremental surge resistance, enabling precise clamping without polarity-dependent behavior.
The device complies with ANSI/IEEE C62.35 surge standards and supports repetitive 10/1000 μs transients at 0.01% duty cycle. Junction temperature range spans −55 °C to +175 °C, and it meets JESD22-B106 solderability (275 °C, 10 s) and JESD201 class 1A whisker testing per E3 suffix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 342 V - Maximum continuous operating voltage before conduction; defines safe working margin for 277 V AC line or 300 V DC bus protection. |
| VBR (min/max) | 380 V / 420 V at 1 mA - Confirmed breakdown threshold ensures reliable triggering above normal operating voltage while avoiding false trips. |
| VC @ IPPM | 548 V at 0.75 A - Clamped voltage during 10/1000 μs surge; determines maximum stress imposed on downstream ICs like microcontrollers or CAN transceivers. |
| PPPM | 400 W - Peak pulse power handling capability; validates suitability for IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge immunity testing. |
| ID @ VWM | <1.0 μA - Reverse leakage at rated standoff voltage; ensures negligible standby power loss and no signal distortion in high-impedance sensor paths. |
| TJ max | +175 °C - Maximum junction temperature; enables operation in under-hood automotive environments and sealed industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; required for engine control, body electronics, and ADAS modules. |
Pinout & Package
DO-41 (DO-204AL) axial-leaded package with matte tin-plated leads; no polarity marking - consistent with bidirectional functionality. Leads conform to J-STD-002 and JESD22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Reversible transient conduction path | Both terminals function identically; no cathode band - simplifies PCB layout and eliminates orientation errors in bidirectional protection circuits. |
| Lead 1 / Lead 2 | Surge current entry/exit points | Handles full 0.75 A peak pulse current bidirectionally; lead geometry supports 275 °C solder dip per JESD 22-B106 without degradation. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance (±5%) and <1.0 μA leakage at VWM, critical for precision analog front-ends and low-power IoT sensors. |
| 400 W 10/1000 μs pulse rating | Supports IEC 61000-4-5 surge immunity up to Level 3 (1 kV line-to-ground, 2 Ω source impedance) without derating at TA ≤ 25 °C. |
| AEC-Q101 qualification | Validates reliability for automotive applications including powertrain, chassis, and infotainment systems - no additional qualification testing required. |
| UL 94 V-0 molding compound | Prevents flame propagation in enclosed assemblies; satisfies safety requirements for industrial control panels and EV charging infrastructure. |
| E3 RoHS-compliant finish | Meets JESD201 class 1A whisker resistance; eliminates tin whisker risk in long-life deployments such as smart grid meters and railway signaling equipment. |
Applications
| Industrial Sensor Interface | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting 4–20 mA current-loop transmitters and RS-485 fieldbus nodes from induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential signal pair or supply rail to limit transient voltage to safe levels. Use Value: Prevents latch-up or permanent damage to isolated ADCs and UART transceivers during motor contactor switching events. |
Use Scenario: Safeguarding LIN bus lines and door module microcontrollers against load dump and alternator ripple in passenger vehicles. IC Role / Device Role / Timing Role: Standoff protector on 12 V power input and LIN data line, absorbing energy from ISO 7637-2 Pulse 1/2/5a transients. Use Value: Maintains system uptime by suppressing >300 V spikes to below 548 V clamping level, preserving MCU reset integrity and EEPROM data retention. |
| Smart Energy Meter Input Stage | Telecom Power Supply Protection |
Use Scenario: Shielding metering IC inputs and auxiliary power rails from lightning-induced surges on 230 V AC mains input. IC Role / Device Role / Timing Role: Primary overvoltage clamp on AC-DC converter input, coordinated with MOV and fuse for staged protection. Use Value: Withstands repeated 400 W pulses without parameter drift, ensuring 10+ year field life under utility grid surge conditions. |
Use Scenario: Guarding -48 V DC telecom rectifier outputs and backplane power distribution against hot-swap and short-circuit transients. IC Role / Device Role / Timing Role: Fast-response shunt suppressor on secondary-side DC bus, limiting voltage overshoot during load step changes. Use Value: Sub-1 ns response time prevents overvoltage damage to FPGAs and Ethernet PHYs during redundant power switchover events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ34CA | Same 34 V nominal VWM but SMC package (higher thermal mass); 600 W PPPM; 58.1 V VC @ 6.9 A - lower clamping ratio but larger footprint. | Preferred for higher-energy surges where board space allows SMC; not AEC-Q101 qualified unless HE3 variant selected. | Select SMBJ34CA only when surge energy exceeds 400 W and thermal dissipation requires larger package; verify PCB pad layout compatibility. |
| P6KE350CA | Higher VWM (350 V) and VC (574 V); same DO-41 package; 600 W PPPM; no AEC-Q101 qualification; ±10% VBR tolerance vs. ±5% for BZW04-342-E3/54. | Suitable for non-automotive industrial use where tighter VBR tolerance and automotive qualification are not required. | Choose P6KE350CA for cost-sensitive commercial designs lacking automotive or high-reliability mandates; avoid in AEC-Q101–required systems. |
Compared with SMBJ34CA and P6KE350CA, BZW04-342-E3/54 offers tighter VBR tolerance, AEC-Q101 qualification, and optimized clamping for 342 V systems - making it the preferred choice for automotive and high-integrity industrial applications where reliability and precision matter.
Availability
BZW04-342-E3/54 is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, and smart energy meter input stages requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for BZW04-342-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 high-reliability diodes, MOSFETs, and passive components for demanding industrial and automotive applications.
The BZW04 series is part of Vishay's TRANSZORB® TVS portfolio, engineered specifically for bidirectional transient suppression in harsh electromagnetic environments - targeting automotive, industrial automation, and telecom infrastructure.
FAQ
What is the clamping voltage of BZW04-342-E3/54 under a standard 10/1000 μs surge?
The BZW04-342-E3/54 exhibits a maximum clamping voltage (VC) of 548 V when subjected to its rated peak pulse current of 0.75 A using the 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during transient events. The BZW04-342-E3/54 maintains this clamping performance across its full operating temperature range.
Is BZW04-342-E3/54 suitable for automotive applications?
Yes, BZW04-342-E3/54 is AEC-Q101 qualified, confirming its reliability for automotive use cases including body control modules, sensor interfaces, and infotainment power rails. Its −55 °C to +175 °C operating junction temperature range, glass-passivated junction, and JESD201 class 1A whisker resistance meet stringent automotive environmental and longevity requirements. The BZW04-342-E3/54 is explicitly listed in Vishay's AEC-Q101 qualified devices table.
How does the bidirectional nature of BZW04-342-E3/54 affect PCB layout?
The BZW04-342-E3/54 has no polarity marking and functions identically in both directions, eliminating orientation constraints during placement. This simplifies PCB routing for differential lines or AC-coupled signals and removes risk of incorrect installation. Its DO-41 axial package allows through-hole mounting with symmetric trace routing - unlike unidirectional TVS diodes that require strict cathode alignment. The BZW04-342-E3/54 thus reduces assembly error rates and supports automated optical inspection.
What is the maximum reverse leakage current for BZW04-342-E3/54 at its standoff voltage?
At its 342 V standoff voltage (VWM) and 25 °C ambient temperature, the BZW04-342-E3/54 guarantees a maximum reverse leakage current (ID) of 1.0 μA. This ultra-low leakage preserves signal integrity in high-impedance sensor paths and minimizes standby power consumption in battery-operated devices. The BZW04-342-E3/54 maintains leakage below 5.0 μA even at +125 °C junction temperature per derating curves in the datasheet.
Does BZW04-342-E3/54 comply with RoHS and lead-free soldering standards?
Yes, the "E3" suffix in BZW04-342-E3/54 denotes full RoHS compliance and adherence to JEDEC J-STD-002 and JESD22-B102 solderability standards. Its matte tin-plated leads withstand 275 °C solder dip for 10 seconds per JESD22-B106, and it passes JESD201 class 1A whisker testing. The BZW04-342-E3/54 uses UL 94 V-0 compliant epoxy molding compound, satisfying both environmental and safety regulatory requirements for global deployment.
BZW04-342-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):
- 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)
BZW04-342-E3/54 FAQ
1.How can I place an order for BZW04-342-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-342-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 BZW04-342-E3/54 reliable?
The price and inventory of BZW04-342-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 BZW04-342-E3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-342-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-342-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-342-E3/54?
BZW04-342-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-342-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 BZW04-342-E3/54?
For technical support, including BZW04-342-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-342-E3/54 requirements.
6.How does Aetrix verify that BZW04-342-E3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-342-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 BZW04-342-E3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-342-E3/54?
All BZW04-342-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-342-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 BZW04-342-E3/54 part is unused and in its original packaging.
Return procedure for BZW04-342-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04-342-E3/54 Tags
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