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Vishay General Semiconductor - Diodes Division BZW04-31-E3/54
- Part No.:
- BZW04-31-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-31-E3/54.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,082
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Product details
Overview
BZW04-31-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 30.8 V stand-off voltage (VWM), 34.2–37.8 V breakdown voltage (VBR) at 1 mA, 49.9 V clamping voltage (VC) at 8.0 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the BZW04-31-E3/54 datasheet, BZW04-31-E3/54 pinout, BZW04-31-E3/54 application, or BZW04-31-E3/54 equivalent, this device serves as a RoHS-compliant, AEC-Q101-qualified bidirectional TVS for ESD and surge suppression in DC power rails, analog sensor inputs, and CAN/LIN bus lines where low clamping ratio and stable temperature coefficient (0.099 %/°C) are critical.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, delivering consistent clamping performance without polarity dependency. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ns), enabling effective suppression of ESD (IEC 61000-4-2) and lightning-induced surges (IEC 61000-4-5).
The device is rated for continuous power dissipation of 1.5 W on infinite heatsink and supports peak forward surge current up to 40 A (8.3 ms half-sine) in unidirectional variants - though BZW04-31-E3/54 is bidirectional and thus excludes IFSM specification. Junction temperature range spans −55 °C to +175 °C, supporting under-hood automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30.8 V - maximum continuous reverse working voltage before conduction begins; defines safe operating margin for 24 V nominal systems. |
| VBR (min/max) | 34.2 V / 37.8 V at 1 mA - tight breakdown tolerance ensures predictable turn-on across production lots and temperature. |
| VC @ IPPM | 49.9 V at 8.0 A - low clamping voltage limits stress on downstream ICs during 10/1000 μs transients. |
| PPPM | 400 W - peak pulse power handling capability per single transient event, validated per IEC 61000-4-5. |
| IPPM | 8.0 A - maximum non-repetitive peak pulse current supported with 10/1000 μs waveform. |
| TJ max. | +175 °C - extended junction temperature rating enables use in high-ambient environments like engine control units. |
| Leakage @ VWM | <1.0 μA - minimal standby current preserves battery life in always-on circuits and avoids false triggering. |
| Temp. Coeff. of VBR | 0.099 %/°C - low drift ensures stable clamping threshold across automotive temperature ranges. |
Pinout & Package
Package: DO-41 (DO-204AL), axial leaded, epoxy-molded case meeting UL 94 V-0 flammability rating; matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry terminal in forward bias; symmetrical with cathode in bidirectional operation | No polarity marking - identical electrical behavior in either direction; no cathode band present. |
| Cathode (unmarked end) | Current exit terminal in forward bias; functionally interchangeable with anode | True bidirectional structure eliminates orientation constraints during PCB placement. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR and low leakage over lifetime, even under thermal cycling and humidity stress. |
| 400 W peak pulse power (10/1000 μs) | Withstands repetitive surge events in industrial motor drives and automotive load-dump scenarios. |
| AEC-Q101 qualified | Validated for automotive applications including body electronics, infotainment, and ADAS sensor interfaces. |
| RoHS-compliant (E3 suffix) | Meets JESD201 Class 1A whisker resistance, suitable for lead-free reflow and long-term reliability. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for 3.3 V/5 V logic. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤49.9 V during 10/1000 μs surges, preventing ADC saturation and latch-up in 5 V rail systems. |
Use Scenario: Safeguarding digital input channels of programmable logic controllers against field-wiring induced surges in factory automation. IC Role / Device Role / Timing Role: Primary surge suppression device mounted at connector interface before optocoupler isolation stage. Use Value: Clamps 400 W transients within 1 ns, preserving signal integrity and extending optocoupler lifetime under repeated 2 kV surge exposure. |
| Telecom Line Interface | Consumer Appliance Power Supply |
|
Use Scenario: ESD and surge protection on RS-485 differential pairs in networked building management systems. IC Role / Device Role / Timing Role: Common-mode TVS pair (one per line) referenced to ground, ensuring balanced clamping. Use Value: Symmetric 30.8 V VWM and 49.9 V VC maintain signal swing margin while meeting IEC 61000-4-2 Level 4 (±15 kV air). |
Use Scenario: Secondary-side overvoltage clamp on 24 V DC output of switched-mode power supplies in smart home hubs. IC Role / Device Role / Timing Role: Standby protection device across output capacitor to absorb regulator fault transients. Use Value: 1.5 W steady-state power rating allows continuous monitoring without thermal derating; 175 °C TJ max supports enclosed enclosures. |
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 @ 7.5 A; same 400 W PPPM but higher clamping voltage | Surface-mount only; requires PCB rework; better suited for space-constrained designs with automated assembly | Select when board real estate is limited and SMT process is established; verify layout clearance for higher VC. |
| P6KE33CA | DO-15 package; 33 V VWM, 53.3 V VC @ 7.5 A; 600 W PPPM but larger footprint and lower power density | Through-hole legacy design; higher surge margin but slower thermal response than DO-41 | Prefer for high-reliability through-hole builds where manual assembly or repairability is prioritized over size. |
Compared with BZW04-31-E3/54, SMBJ33CA offers SMT compatibility at the cost of higher clamping voltage and reduced thermal efficiency in axial-leaded systems, while P6KE33CA provides greater surge headroom but sacrifices board density and modern qualification (not AEC-Q101).
Availability
BZW04-31-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and telecom line interface applications requiring stable component supply, AEC-Q101 compliance, and repeatable clamping performance.
Supply support for BZW04-31-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 diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability and automotive-grade qualification.
The BZW04 series was engineered specifically for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where bidirectional symmetry and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of BZW04-31-E3/54 and how is it measured?
The clamping voltage (VC) of BZW04-31-E3/54 is 49.9 V, measured at 8.0 A peak pulse current using a 10/1000 μs waveform per IEC 61000-4-5. This value represents the maximum voltage seen across the device during standardized surge testing and directly determines the protection level delivered to downstream circuitry. BZW04-31-E3/54 maintains this clamping performance bidirectionally, making it suitable for AC-coupled or floating signal lines.
Is BZW04-31-E3/54 unidirectional or bidirectional?
BZW04-31-E3/54 is a bidirectional Transient Voltage Suppressor, confirmed by its part number suffix absence of "P" (which denotes unidirectional) and presence of no polarity marking on the DO-41 package. Its electrical characteristics - including symmetric VBR, VC, and leakage - apply identically in both directions, enabling use in AC signal paths, differential buses, and floating power domains without orientation concerns.
Does BZW04-31-E3/54 meet AEC-Q101 requirements?
Yes, BZW04-31-E3/54 meets AEC-Q101 qualification requirements as indicated by the HE3 suffix variant (BZW04-31-HE3/54); however, the E3 suffix version is commercial-grade and not AEC-Q101 qualified. The datasheet explicitly states that HE3 suffix parts are AEC-Q101 qualified, while E3 suffix parts are RoHS-compliant commercial grade. For automotive applications, BZW04-31-HE3/54 must be specified.
What is the maximum operating temperature for BZW04-31-E3/54?
The maximum operating junction temperature (TJ) for BZW04-31-E3/54 is +175 °C, with storage temperature spanning −55 °C to +175 °C. This rating enables deployment in under-hood automotive locations and industrial enclosures where ambient temperatures exceed 125 °C. Derating curves in the datasheet (Fig. 2 and Fig. 5) define allowable power and current reduction above 25 °C ambient.
How does the temperature coefficient affect BZW04-31-E3/54 performance?
BZW04-31-E3/54 has a maximum temperature coefficient of VBR of 0.099 %/°C, meaning its breakdown voltage increases by up to 0.099% per degree Celsius rise in junction temperature. At +125 °C, VBR may increase by ~10 V relative to 25 °C, which must be accounted for in margin analysis - especially in high-temperature automotive applications where clamping onset timing shifts predictably.
BZW04-31-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:
- 1
- Bidirectional Channels:
- -
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
BZW04-31-E3/54 FAQ
1.How can I place an order for BZW04-31-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-31-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 BZW04-31-E3/54 reliable?
The price and inventory of BZW04-31-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 BZW04-31-E3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-31-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-31-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-31-E3/54?
BZW04-31-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-31-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 BZW04-31-E3/54?
For technical support, including BZW04-31-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-31-E3/54 requirements.
6.How does Aetrix verify that BZW04-31-E3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-31-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 BZW04-31-E3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-31-E3/54?
All BZW04-31-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-31-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 BZW04-31-E3/54 part is unused and in its original packaging.
Return procedure for BZW04-31-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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