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Vishay General Semiconductor - Diodes Division BZW04P376-E3/73
- Part No.:
- BZW04P376-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P376-E3/73.pdf
- Description:
- TVS DIODE 376VWM 603VC DO204AL
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
BZW04P376-E3/73 from Vishay General Semiconductor is a bi-directional TransZorb® transient voltage suppressor (TVS) diode designed for robust overvoltage protection in DC power lines and signal paths. It features a 376 V standoff voltage (VWM), 603 V 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 engine control units, industrial PLC I/O modules, and telecom power supply rails.
For engineers reviewing the BZW04P376-E3/73 datasheet, BZW04P376-E3/73 pinout, BZW04P376-E3/73 application, or BZW04P376-E3/73 equivalent, key selection criteria include its DO-204AL (DO-41) package compatibility, AEC-Q101 qualification, 175 °C maximum junction temperature, and bi-directional clamping behavior essential for AC-coupled or floating bus protection.
Technical Context
This bi-directional TVS operates symmetrically in both polarities, delivering consistent clamping performance without polarity dependency. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance, critical for repeatable transient suppression under repetitive surge conditions (0.01% duty cycle).
The device complies with ANSI/IEEE C62.35 surge standards and is rated for 400 W peak pulse power with a 10/1000 μs waveform. Its 0.110 %/°C temperature coefficient of breakdown voltage (VBR) enables predictable voltage drift across automotive and industrial temperature ranges (–55 °C to +175 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 376 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin for 300–400 V DC systems. |
| VC @ IPPM | 603 V - Clamped voltage at 0.67 A peak pulse current; determines maximum stress imposed on protected downstream circuitry. |
| PPPM | 400 W - Peak pulse power handling with 10/1000 μs waveform; supports IEC 61000-4-5 Level 4 surge immunity testing. |
| TJ max. | +175 °C - Maximum junction temperature; enables operation in under-hood automotive environments and high-ambient industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including HTOL, TC, and ESD testing per AEC specification; suitable for ECUs and ADAS power domains. |
| Package | DO-204AL (DO-41) - Standard axial-leaded through-hole package with 0.205" body diameter; compatible with legacy PCB layouts and wave-solder processes. |
Pinout & Package
DO-204AL (DO-41) package: axial-leaded, cylindrical epoxy-molded case with matte tin-plated leads. No polarity marking - bi-directional operation confirmed by "B" suffix in family designation (BZW04P376B); leads are electrically symmetrical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bi-directional transient conduction path | Either lead serves as input/output terminal; no cathode band - identical electrical behavior in both directions. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance (±5% typical), low leakage (<1 μA at VWM), and long-term reliability under thermal cycling. |
| 400 W peak pulse power (10/1000 μs) | Supports repeated surge events up to 4 pulses/minute without degradation - meets IEC 61000-4-5 surge test requirements. |
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and infotainment power rails. |
| UL 94 V-0 molding compound | Self-extinguishing epoxy housing prevents flame propagation in safety-critical enclosures per UL certification. |
| Matte tin-plated leads | Complies with J-STD-002 and JESD22-B102 solderability standards; E3 suffix passes JESD201 Class 1A whisker test. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 24 V and 48 V battery-fed ECUs against load dump and ISO 7637-2 transients. IC Role / Device Role / Timing Role: Primary clamping element placed at power entry point to limit voltage excursion to <603 V during 100 V/100 ms load dump events. Use Value: Prevents damage to MCU power supplies and CAN transceivers by limiting transient energy dissipation within the TVS rather than downstream silicon. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) in factory automation systems from EFT and ESD coupling. IC Role / Device Role / Timing Role: Bi-directional shunt clamp on differential or single-ended signal lines interfacing with microcontrollers or ADC inputs. Use Value: Maintains signal integrity below ±603 V clamping threshold while adding <1 pF junction capacitance - negligible impact on kHz-range sensor bandwidth. |
| Telecom DC Power Input Protection | Renewable Energy Inverter DC Link Protection |
Use Scenario: Safeguarding PoE-powered equipment and base station power supplies from lightning-induced surges on -48 V DC feeds. IC Role / Device Role / Timing Role: First-stage transient suppressor upstream of DC-DC converters and hot-swap controllers. Use Value: Absorbs up to 400 W surge energy without failure, enabling compliance with GR-1089-CORE telecom immunity standards. |
Use Scenario: Protecting photovoltaic string inverters' DC link capacitors and IGBT gate drivers from grid-switching transients. IC Role / Device Role / Timing Role: Parallel-connected TVS across DC bus to clamp fast-rising voltage spikes (>1 kV/μs) generated by contactor switching. Use Value: Withstands 175 °C junction temperature and maintains clamping stability across wide ambient range (–40 °C to +85 °C), ensuring field reliability in outdoor installations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ376A | Unidirectional; 376 V VWM, 603 V VC, but requires explicit polarity orientation; SMB package (SMT) vs. DO-41 (THT). | Not suitable for AC or floating-bus protection; limited to DC rail protection where polarity is fixed and board space favors SMT. | Select only if layout allows surface-mount integration and system grounding permits unidirectional clamping. |
| P6SMB376A | Same unidirectional functionality and ratings as SMBJ376A, but in larger SMB package with higher thermal mass; slightly lower VF. | Offers improved power derating above 75 °C; used where sustained surge repetition or elevated ambient temperatures exceed DO-41 limits. | Prefer when thermal management is constrained and >1.5 W steady-state dissipation must be accommodated. |
Compared with BZW04P376-E3/73, SMBJ376A and P6SMB376A offer identical VWM and VC ratings but require polarity-aware placement and lack bi-directional symmetry - making them unsuitable for AC-coupled or bidirectional signal lines where BZW04P376-E3/73's inherent symmetry provides simpler, more robust protection.
Availability
BZW04P376-E3/73 is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface design, and telecom DC power entry protection requiring stable component supply and AEC-Q101-compliant sourcing.
Supply support for BZW04P376-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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and automotive-grade qualification.
The BZW04P376-E3/73 belongs to the TransZorb® TVS family engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure applications demanding AEC-Q101 validation and UL 94 V-0 safety compliance.
FAQ
What is the clamping voltage of the BZW04P376-E3/73 under standard surge conditions?
The BZW04P376-E3/73 exhibits a maximum clamping voltage (VC) of 603 V at a peak pulse current (IPPM) of 0.67 A with a 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 - critical for ensuring downstream ICs remain within absolute maximum ratings. The BZW04P376-E3/73 maintains this clamping performance symmetrically in both directions due to its bi-directional construction.
Is the BZW04P376-E3/73 suitable for automotive applications?
Yes, the BZW04P376-E3/73 is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and infotainment power domains. Its 175 °C maximum junction temperature, glass-passivated junction, and robust surge handling (400 W, 10/1000 μs) meet stringent automotive reliability requirements. The BZW04P376-E3/73 is manufactured with E3 suffix, confirming RoHS compliance and JESD201 Class 1A whisker resistance - essential for under-hood deployment.
Does the BZW04P376-E3/73 have polarity markings?
No, the BZW04P376-E3/73 has no polarity markings because it is a bi-directional TVS diode. Unlike unidirectional variants, it functions identically regardless of voltage polarity applied across its terminals. This is confirmed by the "B" suffix in its full family designation (BZW04P376B) and absence of cathode band on the DO-204AL package. The BZW04P376-E3/73 can be installed in either orientation on PCBs protecting AC-coupled or floating-bus circuits.
What is the standoff voltage (VWM) rating for the BZW04P376-E3/73?
The BZW04P376-E3/73 has a standoff voltage (VWM) of 376 V - the maximum DC or RMS voltage that can be continuously applied without triggering clamping action. This rating ensures reliable operation in 300–400 V DC systems such as telecom power feeds, solar inverter DC links, and industrial 24/48 V power distribution. The BZW04P376-E3/73 maintains <1 μA reverse leakage at VWM, minimizing standby power loss in always-on systems.
How does the BZW04P376-E3/73 compare to earlier-generation TVS diodes in surge handling?
The BZW04P376-E3/73 delivers 400 W peak pulse power with a 10/1000 μs waveform at 0.01% duty cycle - matching or exceeding legacy DO-41 TVS devices like the P4KE376A (376 V, 400 W) while offering tighter VBR tolerance (±5%), lower temperature coefficient (0.110 %/°C), and AEC-Q101 qualification. Its glass-passivated junction also improves long-term stability versus older alloy-junction designs. The BZW04P376-E3/73 thus provides enhanced reliability and consistency in modern high-reliability applications.
BZW04P376-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:
- 1
- Bidirectional Channels:
- -
- 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)
BZW04P376-E3/73 FAQ
1.How can I place an order for BZW04P376-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P376-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 BZW04P376-E3/73 reliable?
The price and inventory of BZW04P376-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 BZW04P376-E3/73 is usually 5 days.
3.What payment methods are accepted for BZW04P376-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P376-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P376-E3/73?
BZW04P376-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P376-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 BZW04P376-E3/73?
For technical support, including BZW04P376-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P376-E3/73 requirements.
6.How does Aetrix verify that BZW04P376-E3/73 is sourced from the original manufacturer or authorized distributors?
All BZW04P376-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 BZW04P376-E3/73 meets industry standards.
7.What is the process for return or replacement of BZW04P376-E3/73?
All BZW04P376-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P376-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 BZW04P376-E3/73 part is unused and in its original packaging.
Return procedure for BZW04P376-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04P376-E3/73 Tags
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