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Vishay General Semiconductor - Diodes Division BZW04-31BHE3/54
- Part No.:
- BZW04-31BHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-31BHE3/54.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:7,812
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Product details
Overview
BZW04-31BHE3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for clamping voltage transients on signal and power lines. It features 30.8 V standoff voltage (VWM), 34.2–37.8 V breakdown voltage (VBR) at 1 mA, 49.9 V maximum clamping voltage (VC) at 8.0 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - used in automotive sensor interface protection and industrial I/O line surge suppression.
For engineers reviewing the BZW04-31BHE3/54 datasheet, BZW04-31BHE3/54 pinout, BZW04-31BHE3/54 application, or BZW04-31BHE3/54 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, DO-41 mechanical dimensions, bidirectional clamping behavior, and direct replacement guidance for ESD and lightning-induced surge protection design.
Technical Context
This device operates as a bidirectional avalanche diode, symmetrically clamping both positive and negative transients without polarity marking. Its glass-passivated junction enables stable breakdown characteristics and low incremental surge resistance (<0.5 Ω typical), critical for fast transient response under 1 ns.
Rated for -55 °C to +175 °C operating junction temperature and qualified to AEC-Q101, the BZW04-31BHE3/54 supports automotive-grade reliability in engine control units and body electronics. It exhibits 0.099 %/°C temperature coefficient of VBR, ensuring predictable voltage drift across thermal extremes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 30.8 V - maximum continuous reverse voltage before conduction begins; defines safe operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 34.2–37.8 V at 1 mA - precise avalanche onset range enabling accurate overvoltage detection and clamping initiation |
| VC (Clamping Voltage) | 49.9 V at 8.0 A (10/1000 μs) - limits downstream circuit stress during surge events; ensures protected ICs stay within absolute maximum ratings |
| PPPM (Peak Pulse Power) | 400 W - sustains high-energy transients such as ISO 7637-2 Pulse 1/2a/5a without degradation when properly heatsinked |
| IPPM (Peak Pulse Current) | 8.0 A - quantifies surge current handling capability; directly maps to IEC 61000-4-5 Level 3 (1 Ω/2 Ω coupling) compliance margin |
| TJ max. | +175 °C - supports operation in under-hood automotive environments and high-ambient industrial enclosures |
| AEC-Q101 Qualified | Yes - validated for automotive applications including powertrain, chassis, and ADAS subsystems per stress test requirements |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with matte tin-plated leads; no polarity marking for bidirectional operation; compliant with UL 94 V-0 flammability rating and J-STD-002 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | No functional distinction between terminals; either lead may connect to line or ground - enables flexible PCB layout in AC-coupled or floating systems |
| Lead 1 / Lead 2 | Current path during transient conduction | Both leads conduct equally during positive or negative surges; requires symmetric trace routing to avoid impedance imbalance |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Ensures long-term stability of VBR and leakage performance across 1000+ thermal cycles and humidity exposure |
| 400 W peak pulse power (10/1000 μs) | Supports repeated surge events per ISO 7637-3 without parameter shift; eliminates need for derating in cyclic load scenarios |
| AEC-Q101 qualification | Validates robustness against mechanical shock, temperature cycling, and HTRB stress - required for Tier 1 automotive supply chain acceptance |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD >1 kV/ns), improving protection margin for 3.3 V/5 V logic interfaces |
| RoHS-compliant HE3 suffix | Indicates AEC-Q101 qualification and JESD201 Class 2 whisker resistance - mandatory for automotive production traceability |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and inductive switching spikes in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between signal line and ground, responding within <1 ns to suppress transients exceeding 30.8 V. Use Value: Maintains signal integrity by limiting voltage excursions to ≤49.9 V during 8 A surges, preventing latch-up or gate oxide damage in connected microcontrollers and ADCs. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and ±10 V analog inputs in programmable logic controllers exposed to field wiring surges and EFT bursts. IC Role / Device Role / Timing Role: Standoff-clamp TVS deployed across input terminals to shunt induced energy before it reaches precision op-amps and isolators. Use Value: Enables compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) up to Level 3 without additional series impedance or filtering complexity. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding Ethernet PHY interfaces and DSL line drivers from lightning-induced common-mode surges entering via unshielded twisted-pair cabling. IC Role / Device Role / Timing Role: Bidirectional TVS mounted differential-to-ground to clamp mode conversion transients while preserving signal symmetry. Use Value: Delivers 400 W pulse handling without capacitance-induced signal distortion (CJ < 100 pF at VWM), supporting 100 Mbps Ethernet integrity. |
Use Scenario: Suppressing commutation spikes generated by brushed DC motors in washing machines, HVAC blowers, and power tools. IC Role / Device Role / Timing Role: Snubber-style TVS across motor terminals to absorb inductive kickback energy during MOSFET/relay turn-off. Use Value: Prevents MOSFET avalanche failure and controller reset by clamping flyback voltages to ≤49.9 V at peak currents up to 8 A. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33CA | DO-214AA package; 33 V VWM, 53.3 V VC at 7.5 A; 600 W PPPM; higher clamping voltage and larger footprint | Preferred where board space allows larger SMC/SMB packages and higher surge margin is needed | Select SMBJ33CA only if 53.3 V clamping is acceptable and DO-41 footprint constraints do not apply |
| 1.5KE33CA | DO-201AD package; 33 V VWM, 53.3 V VC at 7.5 A; 1500 W PPPM; axial-leaded, higher power but slower response due to lead inductance | Suitable for mains-side or bulk power rail protection where sub-ns response is not required | Choose 1.5KE33CA for cost-sensitive industrial power supplies but avoid in high-speed signal paths |
Compared with BZW04-31BHE3/54, SMBJ33CA offers higher surge rating but larger size and looser clamping, while 1.5KE33CA delivers greater energy absorption at the expense of response time and PCB area - BZW04-31BHE3/54 uniquely balances compact DO-41 form factor, AEC-Q101 qualification, and tight 49.9 V clamping for space-constrained automotive and industrial signal protection.
Availability
BZW04-31BHE3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, telecom line cards, and consumer appliance motor drives requiring stable component supply with full traceability and lifecycle management.
Supply support for BZW04-31BHE3/54 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, and protection devices with emphasis on reliability, efficiency, and automotive-grade qualification.
The BZW04 series was engineered specifically for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping performance and AEC-Q101 validation are mandatory.
FAQ
What is the standoff voltage (VWM) of the BZW04-31BHE3/54?
The BZW04-31BHE3/54 has a standoff voltage (VWM) of 30.8 V, meaning it remains non-conductive up to this reverse voltage under normal operating conditions. This value ensures compatibility with 24 V industrial control systems and 12 V automotive circuits while maintaining sufficient margin before avalanche conduction begins. The BZW04-31BHE3/54 maintains this rating across its full operating temperature range.
Is the BZW04-31BHE3/54 bidirectional or unidirectional?
The BZW04-31BHE3/54 is a bidirectional Transient Voltage Suppressor, indicated by the "B" suffix in its part number. It clamps voltage transients equally in both polarities without cathode marking, making it ideal for AC-coupled signal lines, differential buses like CAN, and floating power domains. Unlike unidirectional variants, the BZW04-31BHE3/54 does not require orientation during placement.
Does the BZW04-31BHE3/54 meet AEC-Q101 qualification?
Yes, the BZW04-31BHE3/54 is AEC-Q101 qualified, as confirmed by the "HE3" suffix and Vishay documentation (Document Number 88316, Revision 16-Sep-2021). This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and mechanical shock - validating its suitability for automotive powertrain, body electronics, and ADAS applications. The BZW04-31BHE3/54 is rated for operation from -55 °C to +175 °C junction temperature.
What is the maximum clamping voltage (VC) of the BZW04-31BHE3/54 at rated surge current?
The BZW04-31BHE3/54 has a maximum clamping voltage (VC) of 49.9 V at 8.0 A peak pulse current with a 10/1000 μs waveform. This value represents the upper limit of voltage seen by downstream circuitry during a standardized surge event. Engineers use this parameter to verify that protected ICs remain within their absolute maximum voltage ratings - for example, ensuring 49.9 V stays below the 55 V tolerance of many 3.3 V/5 V interface ICs.
What package type does the BZW04-31BHE3/54 use, and what are its key mechanical features?
The BZW04-31BHE3/54 uses the DO-41 (DO-204AL) axial-leaded package with molded epoxy encapsulation meeting UL 94 V-0 flammability rating. Its leads are matte tin-plated and solderable per J-STD-002, with JESD201 Class 2 whisker resistance. The package measures 25.4 mm minimum length and 2.0–2.7 mm diameter, optimized for through-hole mounting in high-reliability industrial and automotive assemblies. The BZW04-31BHE3/54 has no polarity marking due to its bidirectional function.
BZW04-31BHE3/54 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):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 8A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
BZW04-31BHE3/54 FAQ
1.How can I place an order for BZW04-31BHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-31BHE3/54 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 BZW04-31BHE3/54 reliable?
The price and inventory of BZW04-31BHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-31BHE3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-31BHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-31BHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-31BHE3/54?
BZW04-31BHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-31BHE3/54 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 BZW04-31BHE3/54?
For technical support, including BZW04-31BHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-31BHE3/54 requirements.
6.How does Aetrix verify that BZW04-31BHE3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-31BHE3/54 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 BZW04-31BHE3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-31BHE3/54?
All BZW04-31BHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-31BHE3/54, 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 BZW04-31BHE3/54 part is unused and in its original packaging.
Return procedure for BZW04-31BHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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