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Vishay General Semiconductor - Diodes Division BZW04-299B-E3/54
- Part No.:
- BZW04-299B-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-299B-E3/54.pdf
- Description:
- TVS DIODE 299VWM 482VC DO204AL
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
BZW04-299B-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 299 V standoff voltage (VWM), 332–368 V breakdown range (VBR at 1 mA), 482 A peak pulse current (IPPM) under 10/1000 μs waveform, and clamps to ≤482 V at rated surge-used in industrial sensor interfaces and automotive ECU power rails.
For engineers reviewing the BZW04-299B-E3/54 datasheet, BZW04-299B-E3/54 pinout, BZW04-299B-E3/54 application, or BZW04-299B-E3/54 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, DO-41 mechanical compatibility, low leakage (<0.8 μA at VWM), and 400 W peak pulse power rating with 175 °C max junction temperature.
Technical Context
This device operates as a voltage-clamped shunt protector: during transients exceeding VBR, it avalanches into low-impedance conduction to divert surge current away from downstream circuitry. Its glass-passivated junction ensures stable breakdown and fast response (<1 ns), while the bidirectional structure enables symmetric clamping on AC or floating lines without polarity concerns.
Thermal performance is defined by 1.5 W steady-state power dissipation on infinite heatsink at TL = 75 °C and full derating above 25 °C ambient per Fig. 2. The 0.110 %/°C VBR temperature coefficient ensures predictable voltage shift across -55 to +175 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 299 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 24/48 V DC systems with high-voltage transients. |
| VBR (min/max) | 332 V / 368 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering above system nominal voltage with process tolerance. |
| IPPM | 482 A - Peak surge current handled under standardized 10/1000 μs waveform; determines protection level against IEC 61000-4-5 Level 4 surges. |
| VC | ≤482 V - Clamping voltage at IPPM; directly limits stress on protected ICs or MOSFETs during worst-case transient events. |
| ID @ VWM | ≤0.8 μA - Reverse leakage at standoff voltage; negligible power loss and no measurable loading on high-impedance sensor or communication lines. |
| TJ max | +175 °C - Maximum junction temperature; supports operation in under-hood automotive and industrial environments without thermal derating penalties. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including HTOL, TC, UHAST, and ESD testing; suitable for non-safety-critical ECUs and body electronics. |
Pinout & Package
DO-41 (DO-204AL) axial-leaded package: hermetically sealed glass passivated chip in molded epoxy housing meeting UL 94 V-0 flammability rating; matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 1A whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode | Bidirectional terminals | No polarity marking; symmetrical structure allows connection in either orientation across differential or AC-coupled lines without risk of reverse bias damage. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift in harsh environments. |
| 400 W peak pulse power (10/1000 μs) | Supports repeated surge events per IEC 61000-4-5 without degradation; duty cycle limited to 0.01 % for thermal management. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving clamping precision for sensitive analog front-ends. |
| Solder dip 275 °C max., 10 s | Compatible with standard wave and reflow processes; eliminates lead-free assembly compatibility concerns. |
| RoHS-compliant (E3 suffix) | Meets EU Directive 2011/65/EU and JEDEC JS709C; no exemption required for lead content in solderable terminations. |
Applications
| Industrial Sensor Protection | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting 4–20 mA current-loop transmitters and RS-485 fieldbus nodes from inductive switching spikes and lightning-induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Shunt TVS diode placed across signal pair or supply rail to clamp transients before they reach isolated ADCs or interface ICs. Use Value: Prevents latch-up or permanent damage to precision op-amps and digital isolators while maintaining <0.8 μA leakage for accurate current measurement. |
Use Scenario: Safeguarding LIN bus transceivers and microcontroller I/O pins in door modules, seat controllers, and lighting units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element on LIN data line and 12 V supply input to absorb repetitive 100 V/50 ms load dump energy. Use Value: AEC-Q101 qualification guarantees operation at 175 °C junction temperature and withstands 5000+ thermal cycles without parametric shift. |
| Telecom Power Input Stage | Consumer Appliance Motor Drive |
Use Scenario: Front-end protection of 48 V PoE-powered equipment (e.g., IP cameras, access points) against induced surges on Ethernet pairs and DC input. IC Role / Device Role / Timing Role: Primary surge suppression device placed before DC-DC converter input to limit voltage seen by primary-side MOSFETs and controller ICs. Use Value: 482 V clamping voltage ensures MOSFETs with 600 V rating remain within safe SOA during 1 kV/0.5 J surges per IEC 61000-4-5. |
Use Scenario: Overvoltage suppression on BLDC motor phase outputs and MCU supply rails in smart washing machines and HVAC blowers subjected to commutation spikes. IC Role / Device Role / Timing Role: Bidirectional TVS across each half-bridge leg and across VDD to ground to suppress inductive kickback and ESD events. Use Value: Fast response time (<1 ns) and low clamping ratio (VC/VBR ≈ 1.45) prevent gate oxide rupture in 600 V Si MOSFETs during rapid dV/dt 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 |
|---|---|---|---|
| SMBJ280CA | DO-214AA package; 280 V VWM, 311–344 V VBR, 385 A IPPM, 457 V VC; lower power density than BZW04-299B-E3/54. | Surface-mount alternative for PCB space-constrained designs; lacks AEC-Q101 qualification unless specified as SMBJ280CAHE3. | Select when board real estate is limited and through-hole mounting is not feasible; verify thermal pad layout for 1.5 W dissipation. |
| P6KE270CA | DO-15 package; 270 V VWM, 299–331 V VBR, 412 A IPPM, 433 V VC; same 400 W rating but higher leakage (≤1.0 μA). | Legacy axial package with identical footprint compatibility; wider VBR tolerance (±10 % vs. ±5.3 % for BZW04-299B-E3/54) affects clamping consistency. | Choose for cost-sensitive industrial replacements where tighter VBR tolerance is not critical and AEC-Q101 is not required. |
Compared with SMBJ280CA and P6KE270CA, BZW04-299B-E3/54 delivers tighter VBR tolerance, lower leakage, AEC-Q101 qualification, and optimized DO-41 mechanical robustness-making it preferred for automotive and high-reliability industrial deployments where long-term parametric stability matters.
Availability
BZW04-299B-E3/54 is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body electronics, telecom power inputs, and consumer appliance motor drives requiring stable component supply across multi-year production cycles.
Supply support for BZW04-299B-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 targets high-energy transient suppression in demanding environments; its design prioritizes AEC-Q101 compliance, tight VBR control, and robust thermal performance for automotive and industrial power/signal line protection.
FAQ
What is the maximum clamping voltage of the BZW04-299B-E3/54 under rated surge conditions?
The BZW04-299B-E3/54 has a maximum clamping voltage (VC) of 482 V when subjected to its rated 482 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured at the device terminals and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. The BZW04-299B-E3/54 maintains this clamping performance consistently across its qualified temperature range and lifetime.
Is the BZW04-299B-E3/54 suitable for automotive applications?
Yes, the BZW04-299B-E3/54 is AEC-Q101 qualified, confirming its suitability for automotive electronic control units, body electronics, and infotainment systems. It meets stress test requirements including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing. The BZW04-299B-E3/54 operates reliably from -55 °C to +175 °C junction temperature and is rated for under-hood and cabin-mounted applications where transient immunity is critical.
How does the bidirectional configuration of the BZW04-299B-E3/54 affect its circuit implementation?
The BZW04-299B-E3/54 has no polarity marking and functions identically in both directions, enabling direct placement across AC-coupled signal lines, differential buses (e.g., RS-485), or ungrounded power rails without concern for orientation. This eliminates risk of incorrect installation and simplifies layout for symmetric protection schemes. The BZW04-299B-E3/54 achieves matched VBR and VC in both polarities, ensuring consistent clamping behavior regardless of transient polarity.
What is the reverse leakage current specification for the BZW04-299B-E3/54 at its standoff voltage?
The BZW04-299B-E3/54 exhibits a maximum reverse leakage current (ID) of 0.8 μA at its 299 V standoff voltage (VWM) and 25 °C ambient temperature. This ultra-low leakage ensures minimal power loss and zero measurable loading on high-impedance circuits such as precision sensor bridges or battery-monitoring inputs. The BZW04-299B-E3/54 maintains leakage below 1.0 μA across its full operating temperature range.
Can the BZW04-299B-E3/54 be used in parallel for higher surge current handling?
No, the BZW04-299B-E3/54 is not recommended for parallel operation due to inherent VBR mismatch between units, which causes uneven current sharing and potential thermal runaway. For higher surge ratings, select a single device with appropriate IPPM (e.g., BZW04-342B-E3/54 at 548 A) or implement staged protection with upstream current-limiting impedance. The BZW04-299B-E3/54 is characterized and qualified as a standalone protection element.
BZW04-299B-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):
- 299V
- Voltage - Breakdown (Min):
- 332V
- Voltage - Clamping (Max) @ Ipp:
- 482V
- Current - Peak Pulse (10/1000µs):
- 800mA
- 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)
BZW04-299B-E3/54 FAQ
1.How can I place an order for BZW04-299B-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-299B-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 BZW04-299B-E3/54 reliable?
The price and inventory of BZW04-299B-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 BZW04-299B-E3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-299B-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-299B-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-299B-E3/54?
BZW04-299B-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-299B-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 BZW04-299B-E3/54?
For technical support, including BZW04-299B-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-299B-E3/54 requirements.
6.How does Aetrix verify that BZW04-299B-E3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-299B-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 BZW04-299B-E3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-299B-E3/54?
All BZW04-299B-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-299B-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 BZW04-299B-E3/54 part is unused and in its original packaging.
Return procedure for BZW04-299B-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04-299B-E3/54 Tags
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