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Vishay General Semiconductor - Diodes Division BZW04P31-E3/54
- Part No.:
- BZW04P31-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P31-E3/54.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,693
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Product details
Overview
BZW04P31-E3/54 from Vishay General Semiconductor is a bi-directional TransZorb® transient voltage suppressor (TVS) diode designed for robust overvoltage protection in signal and power lines. It features a 30.8 V stand-off voltage (VWM), 49.9 V clamping voltage (VC) at 8.0 A peak pulse current (IPPM), and 400 W peak pulse power (10/1000 µs waveform), making it suitable for protecting MOSFETs, sensor interfaces, and industrial control inputs against ESD and inductive switching transients.
For engineers reviewing the BZW04P31-E3/54 datasheet, BZW04P31-E3/54 pinout, BZW04P31-E3/54 application, or BZW04P31-E3/54 equivalent, key selection criteria include its DO-41 package compatibility, bi-directional clamping symmetry, AEC-Q101 qualification, low leakage (<1 µA at VWM), and temperature coefficient of breakdown voltage (0.099 %/°C).
Technical Context
This device operates as a voltage-clamped shunt protector with symmetrical avalanche breakdown in both polarities, enabling bidirectional surge suppression without polarity sensitivity. Its glass-passivated junction ensures stable leakage and fast response (<1 ns), while the 175 °C maximum junction temperature supports operation in harsh thermal environments.
The 400 W peak pulse rating is defined per 10/1000 µs waveform with 0.01 % duty cycle, and derating follows a linear curve above 25 °C ambient - critical for sustained surge handling in automotive and industrial power rails. The 1.5 W steady-state power dissipation (PD) limits continuous thermal stress under DC bias conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30.8 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (min/max) | 34.2 V / 39.6 V at 1 mA - Verified avalanche onset range; ensures predictable turn-on across production lot and temperature. |
| VC @ IPPM | 49.9 V at 8.0 A - Clamped voltage during 10/1000 µs surge; determines protected circuit's maximum transient exposure. |
| IPPM | 8.0 A - Peak pulse current capability; directly relates to energy absorption (E ≈ 0.4 × VC × IPPM × tp). |
| PPPM | 400 W - Peak pulse power rating; validates compliance with IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge immunity requirements. |
| TJ max | 175 °C - Maximum junction temperature; enables use in under-hood automotive and high-ambient industrial enclosures. |
| Package | DO-204AL (DO-41) - Standard axial-leaded through-hole package; compatible with legacy PCB layouts and wave soldering. |
Pinout & Package
DO-204AL (DO-41) molded epoxy package with matte tin-plated leads; no polarity marking for bi-directional operation - terminals are functionally interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional avalanche junction | No cathode band; either lead serves as input/output terminal - simplifies layout and eliminates orientation errors. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable leakage current (<1 µA at VWM) and long-term reliability under humidity and thermal cycling. |
| AEC-Q101 qualified | Validated for automotive-grade reliability including HTOL, temperature cycling, and ESD (HBM ≥ 8 kV), supporting under-hood and body-control applications. |
| 400 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 surge immunity requirements for industrial and telecom equipment with minimal board space. |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, improving protection margin for downstream CMOS ICs and microcontrollers. |
| RoHS-compliant, JESD201 Class 1A whisker tested | Enables use in consumer, medical, and industrial assemblies requiring lead-free assembly and long-term interconnect integrity. |
Applications
| Automotive Sensor Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting analog sensor outputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bi-directional shunt clamp placed across sensor output and ground to limit voltage excursions to <50 V during 100 V/50 ms pulses. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V ADC front-ends and op-amps while maintaining signal fidelity during normal operation. |
Use Scenario: Safeguarding digital input channels on programmable logic controllers exposed to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Fast-response TVS placed between field input line and PLC common rail to clamp ±1 kV surges per IEC 61000-4-4. Use Value: Eliminates need for external RC snubbers or optocouplers, reducing BOM count and enabling direct 24 V DC input interfacing. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs from lightning-induced surges on outdoor data lines. IC Role / Device Role / Timing Role: Primary-level surge suppressor mounted at connector entry point, coordinated with secondary GDT or MOV stages. Use Value: Limits let-through energy to <10 mJ, preserving signal integrity and preventing transceiver latch-up during multi-kV transients. |
Use Scenario: Suppressing output overvoltage spikes caused by transformer leakage inductance and rectifier reverse recovery in AC/DC adapters. IC Role / Device Role / Timing Role: Secondary-side clamp across DC output capacitor to absorb 100–200 V spikes during no-load or short-circuit transitions. Use Value: Avoids overvoltage shutdown of downstream USB-PD controllers and maintains regulatory compliance for conducted emissions. |
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 (SMB) package; 33 V VWM, 53.3 V VC @ 7.5 A; same 400 W rating but higher clamping voltage. | Surface-mount only; requires rework of PCB layout; better suited for high-density power supply designs. | Select SMBJ33CA when board space is constrained and SMT assembly is preferred; verify thermal pad layout for 1.5 W PD. |
| 1.5KE33CA | DO-201AD package; 33 V VWM, 53.3 V VC @ 7.5 A; 1500 W peak power but larger footprint and higher leakage. | Higher energy handling for infrequent, high-energy events (e.g., AC mains coupling); less precise clamping for sensitive analog circuits. | Choose 1.5KE33CA for legacy industrial systems where DO-201AD sockets exist and surge repetition is low. |
Compared with SMBJ33CA and 1.5KE33CA, BZW04P31-E3/54 offers tighter VBR tolerance (±7.5 % vs. ±10 %), lower VC/VBR ratio (1.46 vs. 1.61), and AEC-Q101 qualification - making it optimal for automotive and precision analog protection where clamping accuracy and reliability are critical.
Availability
BZW04P31-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, and telecom line protection requiring stable component supply, RoHS compliance, and AEC-Q101 validation.
Supply support for BZW04P31-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 BZW04P series belongs to Vishay's TransZorb® TVS family, engineered specifically for fast, repeatable clamping in harsh electromagnetic environments - targeting design-in for ESD, EFT, and surge immunity in safety-critical and high-volume applications.
FAQ
What is the maximum clamping voltage of BZW04P31-E3/54 under surge conditions?
The BZW04P31-E3/54 has a maximum clamping voltage (VC) of 49.9 V when subjected to an 8.0 A peak pulse current with a 10/1000 µs waveform. This value is measured per IEC 61000-4-5 test conditions and defines the upper voltage limit imposed on protected circuitry during transient events. The BZW04P31-E3/54 maintains this clamping performance across its full operating temperature range (-55 °C to +175 °C).
Is BZW04P31-E3/54 suitable for automotive applications?
Yes, BZW04P31-E3/54 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood and body-control module environments. Its 175 °C maximum junction temperature, glass-passivated junction, and validated HTOL/temperature cycling performance make it appropriate for protecting CAN bus interfaces, sensor signal lines, and power distribution nodes. The BZW04P31-E3/54 meets stringent automotive reliability requirements without derating.
How does the bi-directional configuration of BZW04P31-E3/54 affect circuit design?
The bi-directional configuration of BZW04P31-E3/54 eliminates polarity marking and allows installation in either orientation across differential or AC-coupled lines - simplifying assembly and reducing risk of misplacement. Unlike uni-directional TVS diodes, the BZW04P31-E3/54 provides symmetric clamping for both positive and negative transients, which is essential for protecting balanced interfaces like RS-485 or audio lines. No external biasing or orientation checks are needed.
What is the leakage current specification for BZW04P31-E3/54 at its stand-off voltage?
At its 30.8 V stand-off voltage (VWM), the BZW04P31-E3/54 exhibits a maximum reverse leakage current (ID) of 1.0 µA at 25 °C. This ultra-low leakage ensures minimal power loss in always-on monitoring circuits and prevents false triggering in high-impedance sensor inputs. Leakage remains below 5 µA up to 125 °C, supporting stable operation in thermally demanding applications.
Can BZW04P31-E3/54 be used in parallel for higher surge current handling?
No - BZW04P31-E3/54 is not recommended for parallel connection due to parameter mismatch (VBR tolerance ±7.5 %) causing current imbalance and potential thermal runaway. For higher surge ratings, select a single higher-power device such as 1.5KE33CA or use coordinated staged protection (e.g., BZW04P31-E3/54 followed by a GDT). The BZW04P31-E3/54 is optimized for discrete, point-of-use protection rather than paralleling.
BZW04P31-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:
- Obsolete
- 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)
BZW04P31-E3/54 FAQ
1.How can I place an order for BZW04P31-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P31-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 BZW04P31-E3/54 reliable?
The price and inventory of BZW04P31-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 BZW04P31-E3/54 is usually 5 days.
3.What payment methods are accepted for BZW04P31-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P31-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P31-E3/54?
BZW04P31-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P31-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 BZW04P31-E3/54?
For technical support, including BZW04P31-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P31-E3/54 requirements.
6.How does Aetrix verify that BZW04P31-E3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04P31-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 BZW04P31-E3/54 meets industry standards.
7.What is the process for return or replacement of BZW04P31-E3/54?
All BZW04P31-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P31-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 BZW04P31-E3/54 part is unused and in its original packaging.
Return procedure for BZW04P31-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04P31-E3/54 Tags
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