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Vishay General Semiconductor - Diodes Division BZW04P376B-E3/73
- Part No.:
- BZW04P376B-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P376B-E3/73.pdf
- Description:
- TVS DIODE 376VWM 603VC DO204AL
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
BZW04P376B-E3/73 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 376 V stand-off voltage (VWM), 603 V maximum clamping voltage (VC) at 0.67 A peak pulse current (IPPM), and 400 W peak pulse power (PPPM) capability with 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line cards.
For engineers reviewing the BZW04P376B-E3/73 datasheet, BZW04P376B-E3/73 pinout, BZW04P376B-E3/73 application, or BZW04P376B-E3/73 equivalent, key selection criteria include its DO-204AL (DO-41) package compatibility, AEC-Q101 qualification for automotive use, bi-directional clamping symmetry, and low temperature coefficient (0.110 %/°C) ensuring stable breakdown across operating junction temperatures from –55 °C to +175 °C.
Technical Context
This bi-directional TVS diode operates symmetrically in both polarities, delivering consistent clamping performance without polarity dependence. Its glass-passivated junction ensures fast response time (<1 ns) and low incremental surge resistance, critical for suppressing ESD, lightning-induced transients, and inductive switching spikes.
The device complies with ANSI/IEEE C62.35 surge standards and supports repetitive surge duty cycles up to 0.01 %, with thermal derating defined per Figure 2 and power dissipation limited to 1.5 W on infinite heatsink at TL = 75 °C. Junction capacitance is not specified for this high-voltage variant, confirming its optimization for power-line rather than high-speed data-line protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 376 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin below breakdown. |
| VBR min/max | 418 V / 484 V at IT = 1 mA - Confirmed breakdown voltage range ensures reliable turn-on under surge conditions. |
| VC | 603 V at IPPM = 0.67 A - Clamping voltage during full-rated 10/1000 μs transient; limits downstream voltage stress. |
| PPPM | 400 W - Peak pulse power handling per 10/1000 μs waveform; enables protection against IEC 61000-4-5 Level 4 surges. |
| ID @ VWM | 1.0 μA - Ultra-low reverse leakage at rated stand-off voltage, minimizing standby power loss and system drift. |
| TJ max. | +175 °C - Maximum junction temperature rating supports operation in under-hood automotive and industrial environments. |
| Temp. Coeff. | 0.110 %/°C - Predictable VBR drift with temperature; enables accurate system-level surge margin calculation across –55 °C to +175 °C. |
Pinout & Package
Package: DO-204AL (DO-41), axial-leaded, epoxy-molded case meeting UL 94 V-0 flammability rating. Matte tin-plated leads comply with J-STD-002 and JESD22-B102 solderability standards. Bi-directional configuration has no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional avalanche junction | No functional distinction between leads; either terminal serves as input/output for transient energy diversion in both directions. |
| Lead 1 | Terminal connection | Standard axial lead for PCB through-hole mounting; requires minimum 0.107" (2.7 mm) diameter hole clearance. |
| Lead 2 | Terminal connection | Second axial lead; identical mechanical and electrical role to Lead 1; no color band or marking for polarity identification. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces per stress test requirements. |
| Glass passivated chip junction | Enables sub-nanosecond response time and stable long-term reliability under repeated surge events. |
| 400 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 combination wave testing up to 2 Ω source impedance at full rating. |
| RoHS-compliant, matte tin plating | Meets JESD201 Class 1A whisker resistance; suitable for lead-free reflow and wave soldering processes. |
| Bi-directional clamping symmetry | Identical VBR, VC, and IPPM characteristics in both polarities eliminate need for orientation-aware layout. |
Applications
| Automotive Power Line Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protecting 24 V supply rails in body control modules from load dump and jump-start transients. IC Role / Device Role / Timing Role: Primary clamping element placed directly across power rail and ground to shunt >100 V spikes within nanoseconds. Use Value: Withstands 400 W surges and maintains <1 μA leakage at 376 V, preserving low-power sleep mode integrity while enabling AEC-Q101 compliance. |
Use Scenario: Safeguarding 4–20 mA current loop inputs in programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Bi-directional TVS connected line-to-line and line-to-ground to clamp differential and common-mode transients simultaneously. Use Value: Symmetrical 376 V stand-off and 603 V clamping ensure signal integrity across full industrial temperature range without polarity constraints. |
| Telecom Central Office DC Feeder Protection | Renewable Energy Inverter DC Link Protection |
Use Scenario: Shielding -48 V DC power feeds in telecom cabinets from lightning-induced longitudinal surges. IC Role / Device Role / Timing Role: Installed at cabinet entry point to divert multi-kA transients before reaching downstream DC/DC converters and line cards. Use Value: 0.110 %/°C temperature coefficient guarantees predictable clamping margin across –40 °C to +70 °C ambient cabinet environments. |
Use Scenario: Protecting high-voltage DC bus (up to 600 V) in solar inverters from grid-switching transients and capacitor discharge events. IC Role / Device Role / Timing Role: Paired with MOVs as secondary clamping stage to limit voltage overshoot during fast dV/dt events. Use Value: 175 °C max junction temperature rating allows direct mounting near heat-generating IGBT modules without thermal derating penalties. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ376CA | Same 376 V VWM and bi-directional configuration, but SMB package (surface-mount); lower IPPM (0.65 A vs. 0.67 A) and higher VC (612 V). | Requires PCB redesign for SMD placement; better suited for space-constrained consumer electronics vs. through-hole industrial layouts. | Select SMBJ376CA only when board space is constrained and thermal management via copper pour is feasible. |
| P6SMB376CA | Identical DO-214AA (SMB) footprint and 376 V rating, but rated for 600 W PPPM and higher IPPM (1.1 A); larger junction area increases capacitance. | Higher power rating suits heavier-duty surge environments (e.g., outdoor telecom), but added capacitance may affect high-frequency signal integrity. | Choose P6SMB376CA where surge threat level exceeds IEC 61000-4-5 Level 4 or where longer transient duration is expected. |
Compared with SMBJ376CA and P6SMB376CA, the BZW04P376B-E3/73 offers proven through-hole mechanical robustness, AEC-Q101 qualification out-of-box, and tighter VC tolerance (603 V vs. 612 V/620 V), making it preferred for automotive and high-reliability industrial deployments where leaded mounting and qualification traceability are mandatory.
Availability
BZW04P376B-E3/73 is available at Aetrix Electronics and suitable for automotive electronics, industrial programmable logic controllers, and telecom central office equipment requiring stable component supply with full AEC-Q101 documentation and RoHS compliance.
Supply support for BZW04P376B-E3/73 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, efficiency, and application-specific performance.
The BZW04P series belongs to Vishay's TransZorb® TVS portfolio, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure resilience is non-negotiable.
FAQ
What is the maximum clamping voltage of the BZW04P376B-E3/73 under full-rated surge conditions?
The BZW04P376B-E3/73 exhibits a maximum clamping voltage (VC) of 603 V when subjected to its rated peak pulse current of 0.67 A with a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and represents the upper voltage limit imposed on protected circuitry during worst-case transient events. The BZW04P376B-E3/73 maintains this clamping performance symmetrically in both directions due to its bi-directional construction.
Is the BZW04P376B-E3/73 qualified for automotive applications?
Yes, the BZW04P376B-E3/73 is AEC-Q101 qualified, having passed all stress tests required for discrete semiconductor components in automotive electronic systems. This qualification covers temperature cycling, humidity bias, mechanical shock, and surge endurance - confirming suitability for under-hood and chassis-mounted applications. The BZW04P376B-E3/73 carries the "HE3" suffix variant for explicit AEC-Q101 compliance; the "E3/73" suffix denotes RoHS-compliant commercial-grade packaging with traceable manufacturing.
Does the BZW04P376B-E3/73 have polarity markings on its package?
No, the BZW04P376B-E3/73 is a bi-directional TVS diode and carries no polarity markings - there is no anode or cathode designation on the DO-204AL (DO-41) package. Both leads are functionally identical, allowing unrestricted orientation during PCB assembly. This eliminates risk of incorrect placement and simplifies layout for differential or floating-line protection schemes where polarity independence is essential.
What is the junction temperature range for continuous operation of the BZW04P376B-E3/73?
The BZW04P376B-E3/73 supports continuous operation across a junction temperature range of –55 °C to +175 °C. This wide range enables deployment in extreme environments such as automotive engine compartments, industrial motor drives, and outdoor telecom enclosures. Derating curves (Figure 2 and Figure 5 in the datasheet) define allowable power dissipation reductions above 25 °C ambient, ensuring thermal safety under sustained load conditions.
How does the temperature coefficient affect the breakdown voltage of the BZW04P376B-E3/73?
The BZW04P376B-E3/73 has a maximum temperature coefficient of 0.110 %/°C for its breakdown voltage (VBR), meaning VBR increases by up to 0.110 % for every 1 °C rise in junction temperature. At 376 V VWM, this translates to approximately +0.41 V/°C drift near rated conditions. This predictable positive drift helps maintain safe margin above VWM across temperature extremes and is factored into system-level surge margin calculations for automotive and industrial designs.
BZW04P376B-E3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 376V
- Voltage - Breakdown (Min):
- 418V
- Voltage - Clamping (Max) @ Ipp:
- 603V
- Current - Peak Pulse (10/1000µs):
- 670mA
- 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)
BZW04P376B-E3/73 FAQ
1.How can I place an order for BZW04P376B-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P376B-E3/73 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 BZW04P376B-E3/73 reliable?
The price and inventory of BZW04P376B-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04P376B-E3/73 is usually 5 days.
3.What payment methods are accepted for BZW04P376B-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P376B-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P376B-E3/73?
BZW04P376B-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P376B-E3/73 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 BZW04P376B-E3/73?
For technical support, including BZW04P376B-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P376B-E3/73 requirements.
6.How does Aetrix verify that BZW04P376B-E3/73 is sourced from the original manufacturer or authorized distributors?
All BZW04P376B-E3/73 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 BZW04P376B-E3/73 meets industry standards.
7.What is the process for return or replacement of BZW04P376B-E3/73?
All BZW04P376B-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P376B-E3/73, 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 BZW04P376B-E3/73 part is unused and in its original packaging.
Return procedure for BZW04P376B-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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