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Vishay General Semiconductor - Diodes Division BZW04P342B-E3/54
- Part No.:
- BZW04P342B-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P342B-E3/54.pdf
- Description:
- TVS DIODE 342VWM 548VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,495
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Product details
Overview
BZW04P342B-E3/54 from Vishay General Semiconductor is a bi-directional TransZorb® transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 342 V stand-off voltage (VWM), 548 V clamping voltage (VC) at 0.75 A peak pulse current (IPPM), and 400 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed in automotive, industrial, and telecom power rails and sensor interfaces.
For engineers reviewing the BZW04P342B-E3/54 datasheet, BZW04P342B-E3/54 pinout, BZW04P342B-E3/54 application, or BZW04P342B-E3/54 equivalent, key selection criteria include its bi-directional symmetry, AEC-Q101 qualification, DO-41 package compatibility, and precise 342 V standoff for high-voltage DC bus protection against ESD, lightning surges, and inductive switching transients.
Technical Context
This bi-directional TVS operates symmetrically in both polarities, with identical electrical characteristics forward and reverse - enabling single-device protection of AC-coupled or floating differential lines without polarity concerns. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance under repetitive 10/1000 μs transients.
The device is rated for 175 °C maximum junction temperature and derates linearly above 25 °C ambient per Vishay's Fig. 2 curve. It meets JESD22-B106 solderability (275 °C, 10 s) and JESD201 Class 1A whisker resistance (E3 suffix), confirming suitability for automated assembly in automotive-grade production.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 342 V - maximum continuous operating voltage before clamping begins; defines safe DC/AC RMS working range. |
| VC (Clamping Voltage) | 548 V at IPPM = 0.75 A - peak voltage seen by protected circuit during worst-case 10/1000 μs surge. |
| PPPM (Peak Pulse Power) | 400 W - energy-handling capacity for standardized 10/1000 μs transient; enables IEC 61000-4-5 Level 4 compliance. |
| VBR (Breakdown Voltage) | 380–440 V at IT = 1 mA - sharp, repeatable avalanche onset ensuring predictable protection threshold. |
| ID (Reverse Leakage) | 1.0 μA max at VWM - negligible standby current, critical for low-power sensor or battery-backed systems. |
| TJ max | 175 °C - supports operation in under-hood automotive or industrial enclosures without thermal derating penalties. |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD HBM/MM. |
Pinout & Package
Package: DO-204AL (DO-41), axial-leaded, epoxy-molded case meeting UL 94 V-0. Matte tin-plated leads comply with J-STD-002 and JESD22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (Bi-directional) | Non-polarized terminals | No marking; interchangeable - protects AC or floating nodes without orientation constraints. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, low-drift breakdown voltage and long-term reliability under thermal cycling and humidity. |
| 400 W peak pulse power (10/1000 μs) | Supports high-energy surge immunity per IEC 61000-4-5 up to 4 kV (open-circuit) in properly filtered designs. |
| AEC-Q101 qualification | Validated for automotive powertrain, body control, and ADAS modules requiring zero-failure field performance. |
| Bi-directional symmetry | Eliminates need for dual-diode configurations on differential or AC-coupled lines - reduces BOM count and layout area. |
| RoHS-compliant, matte tin leads | Enables lead-free reflow and wave soldering while meeting JESD201 Class 1A whisker resistance for long-life applications. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V/48 V battery-fed ECUs and gate drivers from load dump and alternator transients. IC Role / Device Role / Timing Role: Primary clamping element placed upstream of DC-DC converters and microcontrollers. Use Value: Clamps 342 V nominal bus to ≤548 V during 10/1000 μs surges, preventing latch-up or oxide rupture in downstream ICs. |
Use Scenario: Shielding analog inputs of pressure, temperature, or current sensors in PLC I/O modules. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA) front-end protector preserving signal integrity and offset accuracy. Use Value: Maintains <1 μA leakage at 342 V, avoiding measurement drift while suppressing ±1 kV ESD per IEC 61000-4-2. |
| Telecom Line Interface Protection | Renewable Energy DC Link Protection |
Use Scenario: Safeguarding RS-485 transceivers and PoE injectors against induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Bi-directional clamp across differential pairs or supply rails in isolated data ports. Use Value: Symmetric response eliminates polarity dependency - critical for full-duplex communication lines with no ground reference. |
Use Scenario: Overvoltage suppression on PV string combiner boxes and battery storage DC links (600–1000 V systems). IC Role / Device Role / Timing Role: Secondary-level clamp backing up primary MOVs or GDTs in multi-stage protection networks. Use Value: Fast response (<1 ns) and precise 342 V VWM enable coordination with higher-voltage stages for graded energy absorption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ342A | Uni-directional; 342 V VWM but requires correct polarity placement; lower PPPM (600 W) but larger SMB package. | Not suitable for floating or AC-coupled nodes; requires PCB polarity marking and layout verification. | Select only when unidirectional protection suffices and board space allows SMB footprint. |
| 1.5KE342A | Higher peak pulse power (1500 W); DO-201 package (larger than DO-41); uni-directional; no AEC-Q101 qualification. | Used in non-automotive industrial power supplies where size and qualification are secondary to energy rating. | Choose when surge energy exceeds 400 W and automotive qualification is not required. |
Compared with SMBJ342A and 1.5KE342A, BZW04P342B-E3/54 uniquely combines bi-directional operation, AEC-Q101 qualification, and DO-41 form factor - making it the only drop-in solution for space-constrained, automotive-grade, polarity-agnostic protection.
Availability
BZW04P342B-E3/54 is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom line cards, and renewable energy DC link monitoring requiring stable component supply across extended product lifecycles.
Supply support for BZW04P342B-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, optoelectronics, and passive components for demanding industrial and automotive applications.
The BZW04P series belongs to Vishay's TransZorb® TVS platform, engineered specifically for high-voltage, high-energy transient suppression in harsh environments - emphasizing AEC-Q101 compliance, tight parameter distribution, and long-term stability.
FAQ
What is the clamping voltage of BZW04P342B-E3/54 under a 10/1000 μs surge?
The BZW04P342B-E3/54 clamps to a maximum of 548 V when subjected to its rated peak pulse current of 0.75 A with a 10/1000 μs waveform. This value is measured per standard IEC 61000-4-5 test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The clamping performance is verified across temperature and production lots per Vishay Document 88316.
Is BZW04P342B-E3/54 suitable for automotive applications?
Yes, BZW04P342B-E3/54 is AEC-Q101 qualified and explicitly rated for automotive use. Its construction - including glass-passivated junction, 175 °C TJ max, and JESD201 Class 1A whisker resistance - meets stress test requirements for engine control, body electronics, and ADAS subsystems. The E3/54 packaging also supports automated SMT assembly in Tier-1 production lines.
Does BZW04P342B-E3/54 have polarity markings?
No, BZW04P342B-E3/54 is a bi-directional TVS diode and carries no polarity marking. Its symmetrical breakdown behavior means either lead may connect to any side of the protected line - essential for protecting floating, differential, or AC-coupled signals without orientation constraints. This distinguishes it from uni-directional variants like BZW04P342-E3/54.
What is the maximum reverse leakage current for BZW04P342B-E3/54 at its stand-off voltage?
The maximum reverse leakage current (ID) for BZW04P342B-E3/54 is 1.0 μA when biased at its 342 V stand-off voltage (VWM) and tested at 25 °C. This ultra-low leakage preserves signal fidelity in high-impedance sensor interfaces and minimizes standby power loss in battery-operated systems - confirmed in Table 1 of Vishay Document 88316.
Can BZW04P342B-E3/54 be used in parallel for higher surge current handling?
No - BZW04P342B-E3/54 is not recommended for parallel operation due to parameter mismatch (VBR tolerance ±15 %) causing current imbalance and potential thermal runaway. For higher energy handling, Vishay recommends staged protection (e.g., GDT + TVS) or selecting a higher-PPPM device like 1.5KE342A instead of paralleling DO-41 units.
BZW04P342B-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:
- -
- 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)
BZW04P342B-E3/54 FAQ
1.How can I place an order for BZW04P342B-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P342B-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 BZW04P342B-E3/54 reliable?
The price and inventory of BZW04P342B-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 BZW04P342B-E3/54 is usually 5 days.
3.What payment methods are accepted for BZW04P342B-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P342B-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P342B-E3/54?
BZW04P342B-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P342B-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 BZW04P342B-E3/54?
For technical support, including BZW04P342B-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P342B-E3/54 requirements.
6.How does Aetrix verify that BZW04P342B-E3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04P342B-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 BZW04P342B-E3/54 meets industry standards.
7.What is the process for return or replacement of BZW04P342B-E3/54?
All BZW04P342B-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P342B-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 BZW04P342B-E3/54 part is unused and in its original packaging.
Return procedure for BZW04P342B-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04P342B-E3/54 Tags
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