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Vishay General Semiconductor - Diodes Division VS-MBRS340TRPBF
- Part No.:
- VS-MBRS340TRPBF
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
VS-MBRS340TRPBF.pdf
- Description:
- DIODE SCHOTTKY 40V 3A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,120
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Product details
Overview
VS-MBRS340TRPBF from Vishay is a surface-mount Schottky rectifier rated for 3.0 A average forward current and 40 V maximum reverse voltage, featuring a low 0.43 V forward voltage drop at 3.0 A and 125 °C, housed in an SMC (DO-214AB) package. It serves as a freewheeling or reverse-battery protection diode in compact DC/DC converters and industrial power supplies.
For engineers reviewing the VS-MBRS340TRPBF datasheet, VS-MBRS340TRPBF pinout, VS-MBRS340TRPBF application, or VS-MBRS340TRPBF equivalent, key selection criteria include its MSL Level 1 moisture sensitivity, 1580 A non-repetitive surge rating, 230 pF junction capacitance, and RoHS-compliant lead-free construction.
Technical Context
The VS-MBRS340TRPBF operates as a single-anode–single-cathode unidirectional power rectifier with guard-ring-enhanced ruggedness. Its Schottky barrier structure enables high-frequency switching with minimal reverse recovery charge and thermal resistance of 12 °C/W (junction-to-lead).
Designed for industrial-level reliability, it supports continuous operation from –55 °C to +150 °C junction temperature and withstands 10,000 V/μs voltage transients. The device meets J-STD-020 MSL Level 1 and is qualified for use without floor-life restrictions under reflow peak temperatures up to 260 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF(AV) | 3.0 A average forward current at 50 % duty cycle, TL = 118 °C - defines continuous DC output capability in SMPS output stages |
| VRRM | 40 V maximum repetitive reverse voltage - sets safe operating limit for battery protection and flyback clamp circuits |
| VF @ 3 A, 125 °C | 0.43 V - enables low conduction loss and reduced thermal stress in high-temp industrial environments |
| IRM @ 125 °C | 35 mA - specifies leakage level under worst-case thermal stress, critical for standby power budgeting |
| RthJL | 12 °C/W - allows direct thermal path to PCB copper, supporting high-power density layout without external heatsink |
| CT @ 5 V | 230 pF - determines high-frequency switching noise and EMI behavior in >100 kHz converter topologies |
| IFSM | 1580 A peak surge (5 μs sine) - provides robustness against inrush and fault currents in motor drives and UPS systems |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic case with integral heat sink pad; dimensions 7.11 × 6.22 × 2.62 mm (0.280 × 0.245 × 0.103 in); marking "V34" on cathode end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to input/source side; polarity-sensitive for correct rectification direction |
| Cathode | Forward current exit point | Marked with band; ties to load/ground side; carries full output current and dissipates heat via exposed pad |
Key Features
| Feature | Design Value |
|---|---|
| Very low VF | 0.43 V at 3 A and 125 °C - reduces conduction losses by >30 % vs. standard PN diodes in same footprint |
| Guard ring structure | Enhances avalanche ruggedness and long-term reliability under repetitive transient stress |
| MSL Level 1 | Zero floor-life limitation - supports standard SMT reflow without baking or dry-pack handling |
| RoHS-compliant Pb-free | Meets Directive 2011/65/EU - ensures environmental compliance for global industrial and telecom deployments |
| Industrial temperature range | –55 °C to +150 °C TJ - enables deployment in harsh environments including factory automation and outdoor power systems |
Applications
| Disk Drive Power Supply | Switching Power Supply Output Stage |
|---|---|
Use Scenario: Provides regulated +5 V and +12 V rails for HDD spindle and actuator motors with tight space constraints. IC Role / Device Role / Timing Role: Freewheeling rectifier in synchronous buck converter secondary side. Use Value: Low VF minimizes heat generation in sealed drive enclosures; SMC package fits dense PCB layouts. | Use Scenario: Used in 24 V output stage of AC/DC adapter for industrial IoT gateways. IC Role / Device Role / Timing Role: Output rectifier in isolated forward or flyback topology. Use Value: 1580 A IFSM withstands cold-start surges; 230 pF CT limits high-frequency ringing and EMI. |
| Battery Charging Circuit | Reverse Battery Protection |
Use Scenario: Enables dual-input charging (USB + barrel jack) for portable test equipment with Li-ion battery. IC Role / Device Role / Timing Role: OR-ing diode between two independent 5 V sources. Use Value: 0.43 V VF reduces voltage drop and improves charging efficiency vs. MOSFET-based solutions. | Use Scenario: Protects 24 V vehicle-mounted electronics from accidental reverse-polarity connection. IC Role / Device Role / Timing Role: Series blocking diode in main power rail. Use Value: 40 V VR rating covers automotive load-dump transients; guard ring prevents latch-up during polarity reversal. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MBR340FS | Same SMC package, identical 3 A / 40 V ratings, but VF = 0.55 V @ 3 A, 25 °C (higher conduction loss) | Suitable where ambient temperature stays below 85 °C; less margin for thermal derating in sealed enclosures | Select when cost sensitivity outweighs thermal performance; verify layout cooling for >100 °C operation |
| Diodes Incorporated SB340-E3/52 | SMC package, 3 A / 40 V, VF = 0.52 V @ 3 A, 25 °C; RthJA = 50 °C/W (vs. 46 °C/W for VS-MBRS340TRPBF) | Marginally higher thermal resistance limits power density in high-ambient designs | Prefer for legacy BOM continuity; confirm thermal simulation matches VS-MBRS340TRPBF's 12 °C/W RthJL path |
Compared with MBR340FS and SB340-E3/52, the VS-MBRS340TRPBF delivers the lowest VF at elevated temperature and best junction-to-lead thermal resistance, making it optimal for thermally constrained industrial and automotive-adjacent applications where sustained 125 °C operation is required.
Availability
VS-MBRS340TRPBF is available at Aetrix Electronics and suitable for switching power supplies, battery protection circuits, and DC/DC converter output stages requiring stable component supply, long-lifecycle support, and RoHS-compliant manufacturing.
Supply support for VS-MBRS340TRPBF 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 Intertechnology is a global semiconductor manufacturer specializing in discrete components, sensors, and passive elements, with leadership in power semiconductors and precision resistive technologies.
The VS-MBRS340TRPBF belongs to Vishay's High Power Products Schottky rectifier line, engineered for high-efficiency, high-reliability power conversion in industrial, computing, and telecommunications infrastructure.
FAQ
What is the maximum junction temperature rating for VS-MBRS340TRPBF?
The VS-MBRS340TRPBF has a maximum junction temperature (TJ) rating of +150 °C, with operational capability down to –55 °C. This wide range supports deployment in demanding industrial environments such as factory automation controllers and outdoor power converters where ambient temperatures exceed 85 °C. Thermal design must respect the 12 °C/W RthJL limit to avoid exceeding TJ under full load.
Is VS-MBRS340TRPBF suitable for high-frequency switching applications?
Yes, the VS-MBRS340TRPBF is optimized for high-frequency operation due to its Schottky barrier construction, which eliminates minority-carrier storage delay. With only 230 pF junction capacitance at 5 V and no reverse recovery time (trr ≈ 0 ns), it minimizes switching losses and EMI in converters operating above 100 kHz - including resonant LLC and advanced PFC stages where fast turn-off is critical.
Does VS-MBRS340TRPBF require special handling during PCB assembly?
No special handling is required: VS-MBRS340TRPBF is rated MSL Level 1 per J-STD-020 and qualified for peak reflow temperatures up to 260 °C. It may be processed using standard lead-free reflow profiles without baking, dry packing, or humidity-controlled storage - simplifying SMT line logistics and reducing manufacturing overhead for high-volume industrial production.
What does the "TRPBF" suffix indicate in VS-MBRS340TRPBF?
The "TRPBF" suffix in VS-MBRS340TRPBF denotes tape-and-reel packaging (TR) and lead-free (PbF) construction. "TR" specifies 3000 pieces per reel, compatible with automated pick-and-place equipment; "PBF" confirms compliance with RoHS Directive 2011/65/EU and absence of lead in solderable terminations and internal materials.
How does the guard ring in VS-MBRS340TRPBF improve reliability?
The guard ring in VS-MBRS340TRPBF mitigates edge breakdown under high-voltage transients and enhances avalanche energy tolerance (EAS = 6 mJ). It prevents localized electric field concentration at the silicon periphery, thereby extending device lifetime in applications subject to repetitive surge events - such as motor drive freewheeling paths or automotive load-dump protection circuits where voltage spikes exceed rated VR.
VS-MBRS340TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 525 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 2 mA @ 40 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 150°C
VS-MBRS340TRPBF FAQ
1.How can I place an order for VS-MBRS340TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for VS-MBRS340TRPBF 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 VS-MBRS340TRPBF reliable?
The price and inventory of VS-MBRS340TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VS-MBRS340TRPBF is usually 5 days.
3.What payment methods are accepted for VS-MBRS340TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-MBRS340TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VS-MBRS340TRPBF?
VS-MBRS340TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VS-MBRS340TRPBF 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 VS-MBRS340TRPBF?
For technical support, including VS-MBRS340TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-MBRS340TRPBF requirements.
6.How does Aetrix verify that VS-MBRS340TRPBF is sourced from the original manufacturer or authorized distributors?
All VS-MBRS340TRPBF 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 VS-MBRS340TRPBF meets industry standards.
7.What is the process for return or replacement of VS-MBRS340TRPBF?
All VS-MBRS340TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with VS-MBRS340TRPBF, 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 VS-MBRS340TRPBF part is unused and in its original packaging.
Return procedure for VS-MBRS340TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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