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Vishay General Semiconductor - Diodes Division BZW04-376B-E3/54
- Part No.:
- BZW04-376B-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-376B-E3/54.pdf
- Description:
- TVS DIODE 376VWM 603VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:7,298
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Product details
Overview
BZW04-376B-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 376 V standoff voltage (VWM), 418–462 V breakdown range (VBR), 603 V clamping voltage (VC) at 0.67 A peak pulse current (IPPM), and 400 W peak pulse power (10/1000 µs waveform). It is used to protect MOSFETs, sensor interfaces, and industrial control inputs against lightning-induced surges and inductive switching transients.
For engineers reviewing the BZW04-376B-E3/54 datasheet, BZW04-376B-E3/54 pinout, BZW04-376B-E3/54 application, or BZW04-376B-E3/54 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, DO-41 mechanical compatibility, low leakage (<1 µA at VWM), and thermal stability up to +175 °C junction temperature.
Technical Context
This device operates as a voltage-clamped surge protector with symmetrical bidirectional conduction-no polarity marking required. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), enabling effective suppression of fast-rising transients such as ESD and inductive kickback.
The BZW04-376B-E3/54 delivers 400 W peak pulse power under standardized 10/1000 µs waveform conditions, with derating above 25 °C ambient per Fig. 2. Its 0.110 %/°C temperature coefficient of VBR ensures predictable voltage drift across automotive and industrial temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 376 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin for 300–350 V DC bus or AC line applications. |
| VBR (min/max) | 418 V / 462 V - Breakdown occurs within this range at 1 mA test current; ensures consistent turn-on threshold across production lots. |
| VC @ IPPM | 603 V - Clamping voltage measured at 0.67 A peak pulse current; limits downstream voltage stress during surge events. |
| IPPM | 0.67 A - Peak pulse current supported under 10/1000 µs waveform; correlates directly with energy handling (≈400 W). |
| PPPM | 400 W - Peak pulse power rating; enables protection against IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges when properly coordinated. |
| TJ max. | +175 °C - Maximum junction temperature; supports operation in under-hood automotive and high-ambient industrial environments. |
| Leakage (ID) | <1 µA @ 376 V - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits. |
Pinout & Package
DO-41 (DO-204AL) axial-leaded package with matte tin-plated leads, UL 94 V-0 compliant epoxy molding, and no polarity marking (bidirectional configuration).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; no cathode band-enables drop-in placement on bidirectional AC or differential signal lines. |
| Lead 1 / Lead 2 | PCB termination interface | Leads accept soldering per J-STD-002/JESD22-B102; rated for 275 °C dip soldering (10 s max); supports manual and automated assembly. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term parameter stability and resistance to humidity/moisture ingress-critical for outdoor and automotive under-hood reliability. |
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements (HTOL, TCT, ESD, etc.), enabling use in engine control, body electronics, and ADAS subsystems. |
| 400 W peak pulse power (10/1000 µs) | Provides robust immunity to repetitive surge events in industrial motor drives and telecom power supplies without degradation. |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients-reduces risk of latch-up or damage to protected ICs like microcontrollers and ADC front-ends. |
| RoHS-compliant (E3 suffix) | Meets EU RoHS Directive 2011/65/EU and JESD201 Class 1A whisker resistance-ensures supply chain compliance and board-level reliability. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate driver inputs and feedback sensing lines against voltage spikes from relay coil de-energization and PWM switching noise. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across isolated signal paths (e.g., optocoupler inputs, CAN bus stubs) to limit transient excursions. Use Value: Prevents false triggering or latch-up in logic-level translators and isolators by clamping transients to ≤603 V while maintaining <1 µA leakage at 376 V DC bias. |
Use Scenario: Surge suppression on LIN bus lines and sensor supply rails (e.g., ambient temperature, rain sensor) exposed to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Standoff-mode TVS deployed between VBAT-referenced lines and ground to absorb 10/1000 µs pulses up to 400 W without failure. Use Value: Maintains functional safety integrity per ISO 16750-2 by surviving repeated 100 V/100 ms load dump pulses and meeting AEC-Q101 lifetime requirements. |
| Telecom Power Interfaces | Consumer Appliance Control Boards |
|
Use Scenario: Input-stage protection for AC/DC adapters and PoE-powered devices subjected to lightning-induced surges on primary-side rectifier outputs. IC Role / Device Role / Timing Role: Primary-side TVS connected across bulk capacitor terminals to clamp line-to-line transients before they reach secondary regulation circuitry. Use Value: Enables compliance with IEC 61000-4-5 (Level 3, 1 kV/2 Ω) by limiting peak voltage to 603 V with sub-1 ns response-preserving downstream MOSFET and controller reliability. |
Use Scenario: Overvoltage safeguard for microcontroller GPIOs and relay coil drivers in washing machines, HVAC controllers, and smart home hubs. IC Role / Device Role / Timing Role: Low-leakage bidirectional suppressor placed across inductive loads (e.g., solenoid valves, fan motors) to quench flyback energy. Use Value: Eliminates need for external snubbers or RC networks-reduces BOM count while ensuring >100,000-cycle reliability under 40 A IFSM-rated inductive switching. |
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 | DO-214AA package (SMB), 376 V VWM, 612 V VC @ 0.65 A; higher capacitance (~100 pF vs. ~25 pF for BZW04-376B-E3/54). | Preferred where board space allows surface-mount layout and higher surge repetition rate is needed (SMBJ series rated for higher duty cycle). | Select SMBJ376CA for SMT designs requiring tighter footprint and higher IPPM tolerance; verify layout clearance for SMB thermal dissipation. |
| 1.5KE376CA | DO-201AD package, 376 V VWM, 620 V VC @ 0.64 A; 1500 W PPPM rating but larger size and lower reliability in high-vibration environments. | Suitable for legacy through-hole designs needing higher single-pulse energy absorption, but not AEC-Q101 qualified. | Choose 1.5KE376CA only for non-automotive, non-high-reliability applications where 1.5 kW surge headroom justifies larger DO-201AD footprint and lead fatigue risk. |
Compared with SMBJ376CA and 1.5KE376CA, the BZW04-376B-E3/54 offers superior vibration resistance due to DO-41 axial construction, AEC-Q101 qualification for automotive use, and lower junction capacitance-making it optimal for high-frequency signal line protection and space-constrained through-hole layouts.
Availability
BZW04-376B-E3/54 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body electronics, and telecom power interfaces requiring stable component supply, long-lifecycle support, and AEC-Q101-compliant surge protection.
Supply support for BZW04-376B-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, and passive components for automotive, industrial, and computing markets.
The BZW04 series is part of Vishay's TransZorb® TVS family, engineered specifically for cost-effective, high-energy bidirectional surge suppression in harsh-environment applications demanding AEC-Q101 validation and long-term parametric stability.
FAQ
What is the clamping voltage of the BZW04-376B-E3/54 under maximum surge conditions?
The BZW04-376B-E3/54 has a maximum clamping voltage (VC) of 603 V when subjected to its rated peak pulse current of 0.67 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream circuitry sees no more than 603 V during transient events, protecting sensitive components such as microcontrollers and analog front-ends. The BZW04-376B-E3/54 maintains this clamping performance across its full operating temperature range.
Is the BZW04-376B-E3/54 suitable for automotive applications?
Yes, the BZW04-376B-E3/54 is AEC-Q101 qualified and explicitly rated for automotive use in body electronics, lighting, and sensor interfaces. Its DO-41 package provides mechanical robustness under vibration, and its +175 °C maximum junction temperature supports under-hood deployment. The BZW04-376B-E3/54 meets stress test requirements including HTOL, temperature cycling, and ESD-making it appropriate for systems requiring ISO/TS 16949-aligned component validation.
How does the BZW04-376B-E3/54 differ from unidirectional variants like BZW04-376-E3/54?
The BZW04-376B-E3/54 is bidirectional with symmetrical clamping in both polarities and no cathode marking, whereas the unidirectional BZW04-376-E3/54 has a cathode band and conducts only in reverse bias. The BZW04-376B-E3/54 is intended for AC-coupled or differential signal lines (e.g., LIN, RS-485 stubs), while the unidirectional version suits DC power rail protection. Both share identical VWM, VBR, and PPPM, but only the "B" suffix model supports true bidirectional surge suppression.
What is the maximum reverse leakage current for the BZW04-376B-E3/54 at its standoff voltage?
The BZW04-376B-E3/54 exhibits a maximum reverse leakage current (ID) of 1.0 µA at its 376 V standoff voltage (VWM) and 25 °C ambient temperature. This ultra-low leakage ensures minimal power loss and signal distortion in high-impedance monitoring circuits and battery-backed systems. Leakage remains below 5 µA even at +125 °C, preserving functionality in extended-temperature industrial deployments of the BZW04-376B-E3/54.
Can the BZW04-376B-E3/54 be used in parallel for higher surge current handling?
No-parallel connection of BZW04-376B-E3/54 devices is not recommended due to parameter mismatch (VBR tolerance ±5 %) causing uneven current sharing and potential thermal runaway. For higher IPPM, select a single device with higher rating (e.g., 1.5KE376CA) or implement staged protection with upstream MOVs. The BZW04-376B-E3/54 is designed for discrete point-of-load protection, and its DO-41 thermal path is optimized for individual mounting with adequate PCB copper area.
BZW04-376B-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):
- 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-E3/54 FAQ
1.How can I place an order for BZW04-376B-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-376B-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 BZW04-376B-E3/54 reliable?
The price and inventory of BZW04-376B-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 BZW04-376B-E3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-376B-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-376B-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-376B-E3/54?
BZW04-376B-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-376B-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 BZW04-376B-E3/54?
For technical support, including BZW04-376B-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-376B-E3/54 requirements.
6.How does Aetrix verify that BZW04-376B-E3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-376B-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 BZW04-376B-E3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-376B-E3/54?
All BZW04-376B-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-376B-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 BZW04-376B-E3/54 part is unused and in its original packaging.
Return procedure for BZW04-376B-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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