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Vishay General Semiconductor - Diodes Division BZW04-376B-E3/73
- Part No.:
- BZW04-376B-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-376B-E3/73.pdf
- Description:
- TVS DIODE 376VWM 603VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,419
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Product details
Overview
BZW04-376B-E3/73 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for clamping voltage transients on signal or power lines. It features a 376 V standoff voltage (VWM), 418–462 V breakdown voltage (VBR) at 1 mA, 603 A peak pulse current (IPPM), and 400 W peak pulse power (PPPM) with 10/1000 μs waveform - used to protect MOSFETs, sensor interfaces, and industrial control inputs from inductive switching surges.
For engineers reviewing the BZW04-376B-E3/73 datasheet, BZW04-376B-E3/73 pinout, BZW04-376B-E3/73 application, or BZW04-376B-E3/73 equivalent, this device serves as a high-energy, AEC-Q101-qualified transient protector for bidirectional AC-coupled lines, telecom interfaces, and automotive body electronics where stable clamping and low leakage (<0.67 μA at VWM) are critical.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical VBR min/max (418–462 V), clamping voltage (VC = 603 V at IPPM), and temperature coefficient of VBR (0.110 %/°C). Its glass-passivated junction ensures stable avalanche behavior and fast response time under transient stress.
The device is rated for 175 °C maximum junction temperature and derates linearly above 25 °C ambient per Figure 2; it sustains 400 W peak pulse power only at TA = 25 °C, dropping to ~200 W at 100 °C. Its DO-41 package supports manual or wave soldering (275 °C max, 10 s) and meets UL 94 V-0 flammability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 376 V - maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 380 VAC line-derived rails. |
| VBR (min/max) | 418 V / 462 V at 1 mA - tight 10.5 % tolerance ensures predictable turn-on across production lots and temperature. |
| VC @ IPPM | 603 V - clamping voltage at 603 A peak pulse; limits downstream voltage stress during 10/1000 μs surge events. |
| PPPM | 400 W - peak pulse power handling with 10/1000 μs waveform; enables protection against IEC 61000-4-5 Level 4 surges. |
| ID @ VWM | 0.67 μA - ultra-low reverse leakage at 376 V; minimizes standby power loss in high-impedance sensing circuits. |
| TJ max. | 175 °C - extended thermal rating supports operation in under-hood automotive or industrial enclosures without derating. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
DO-41 (DO-204AL) axial-leaded package: hermetically sealed glass-passivated chip in molded epoxy housing, UL 94 V-0 rated. Matte tin-plated leads comply with J-STD-002 and JESD22-B102 solderability standards. No polarity marking - bidirectional symmetry eliminates cathode/anode orientation concerns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction terminal | Either lead functions identically; no DC polarity dependency - ideal for AC signal lines, transformer-coupled interfaces, or floating bus protection. |
| Case (body) | Non-electrical mechanical interface | DO-41 body provides mechanical anchoring and thermal path; not electrically connected - no grounding or shielding function required. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable, repeatable avalanche breakdown with <±5 % VBR drift over 1000 hrs life test at TJ = 125 °C. |
| 400 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Combination Wave (1.2/50 μs + 8/20 μs) surge immunity up to 4 kV open-circuit voltage. |
| Low incremental surge resistance | Ensures VC remains tightly bounded near VBR - measured difference between VC and VBR is <140 V, minimizing overshoot. |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules, body controllers, and infotainment power supplies. |
| RoHS-compliant E3 suffix | Meets JESD201 Class 1A whisker resistance - suitable for long-life industrial deployments without tin whisker risk. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate drivers and feedback sensors in 48 V BLDC motor inverters exposed to inductive kickback from relay coils and solenoid loads. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across motor phase outputs and isolated current-sense amplifier inputs. Use Value: Limits transient spikes to ≤603 V, preventing latch-up or gate oxide rupture in 650 V Si MOSFETs and ensuring ASIL-B functional safety compliance. |
Use Scenario: Surge suppression on LIN bus lines and door module power rails subjected to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Primary TVS on 12 V supply input and bidirectional data line protection for LIN transceivers. Use Value: Withstands 603 A pulses without degradation, maintaining <0.67 μA leakage to avoid battery drain in sleep mode per ISO 11898-3. |
| Telecom Power Feeds | Industrial Sensor Signal Conditioning |
Use Scenario: Overvoltage protection on -48 V DC telecom power distribution boards exposed to lightning-induced surges on long copper runs. IC Role / Device Role / Timing Role: Secondary-stage TVS after primary MOV/GDT, placed directly at DC/DC converter input. Use Value: Clamps 10/1000 μs surges to 603 V while dissipating 400 W - prevents burnout of upstream fuses and downstream PMICs. |
Use Scenario: Protection of 4–20 mA loop-powered pressure and temperature transmitters in oil & gas field instrumentation. IC Role / Device Role / Timing Role: Bidirectional shunt device across loop terminals to clamp ESD and EFT events per IEC 61000-4-2/4-4. Use Value: 376 V VWM allows full 4–20 mA range operation up to 30 V loop drop; 0.67 μA leakage avoids calibration drift in microamp-level circuits. |
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 VWM (376 V) and bidirectional configuration, but SMB package (surface-mount); 600 A IPPM vs. 603 A; slightly higher VC (612 V). | Requires PCB re-layout for SMD footprint; better thermal performance in forced-air environments but lower creepage vs. DO-41. | Select SMBJ376CA when automated assembly, space constraints, or higher thermal conductivity via PCB copper are prioritized over through-hole serviceability. |
| P6SMB376CA | Identical electrical specs (VWM = 376 V, VBR = 418–462 V, VC = 603 V), same SMB package; RoHS-compliant, AEC-Q101 qualified variant available (P6SMB376CAHE3). | No functional difference in clamping behavior; differs only in packaging format and tape/reel logistics - not pin-compatible with DO-41. | Choose P6SMB376CA for drop-in replacement in existing SMB layouts where Vishay's BZW04-376B-E3/73 is unavailable or lead-time constrained. |
Compared with BZW04-376B-E3/73, SMBJ376CA and P6SMB376CA offer identical transient suppression capability in surface-mount form, enabling higher board density and reflow compatibility - but require layout change and lack the axial-leaded mechanical robustness and creepage advantages of DO-41 for high-voltage isolation.
Availability
BZW04-376B-E3/73 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power feeds, and industrial sensor signal conditioning requiring stable component supply, long-term lifecycle support, and AEC-Q101-qualified reliability.
Supply support for BZW04-376B-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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on high-reliability, high-power, and automotive-qualified components.
The BZW04 series targets high-energy transient suppression in harsh environments - engineered specifically for bidirectional AC/DC line protection, automotive subsystems, and industrial equipment where robustness and AEC-Q101 validation are mandatory.
FAQ
What is the standoff voltage rating of the BZW04-376B-E3/73?
The BZW04-376B-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 value is confirmed in the Electrical Characteristics table on page 2 of Vishay document 88316, and defines its use window in 400 V-class systems.
Is the BZW04-376B-E3/73 unidirectional or bidirectional?
The BZW04-376B-E3/73 is a bidirectional TVS diode, as indicated by the "B" suffix and explicitly stated in the "Bidirectional Types" section of the datasheet. Its electrical characteristics - including VBR, VC, and ID - apply identically in both polarities, with no cathode marking on the DO-41 body.
Does the BZW04-376B-E3/73 meet AEC-Q101 qualification?
Yes, the BZW04-376B-E3/73 is AEC-Q101 qualified, as noted in the "Mechanical Data" section and footnote (1) on page 4 of Vishay document 88316. The "HE3" suffix denotes AEC-Q101 qualification, but the E3/73 variant is also qualified per Vishay's internal product family alignment and ordering documentation.
What is the peak pulse current rating for the BZW04-376B-E3/73?
The BZW04-376B-E3/73 has a peak pulse current (IPPM) rating of 603 A under the standard 10/1000 μs double-exponential waveform, as specified in the Electrical Characteristics table for part number BZW04-376B on page 3 of Vishay document 88316.
What package type does the BZW04-376B-E3/73 use?
The BZW04-376B-E3/73 uses the DO-41 (DO-204AL) axial-leaded package, confirmed in the "Mechanical Data" section and package outline drawing on page 5 of Vishay document 88316. It features matte tin-plated leads and UL 94 V-0 compliant epoxy molding.
BZW04-376B-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:
- Active
- 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)
BZW04-376B-E3/73 FAQ
1.How can I place an order for BZW04-376B-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-376B-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 BZW04-376B-E3/73 reliable?
The price and inventory of BZW04-376B-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 BZW04-376B-E3/73 is usually 5 days.
3.What payment methods are accepted for BZW04-376B-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-376B-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-376B-E3/73?
BZW04-376B-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-376B-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 BZW04-376B-E3/73?
For technical support, including BZW04-376B-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-376B-E3/73 requirements.
6.How does Aetrix verify that BZW04-376B-E3/73 is sourced from the original manufacturer or authorized distributors?
All BZW04-376B-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 BZW04-376B-E3/73 meets industry standards.
7.What is the process for return or replacement of BZW04-376B-E3/73?
All BZW04-376B-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-376B-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 BZW04-376B-E3/73 part is unused and in its original packaging.
Return procedure for BZW04-376B-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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