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Vishay General Semiconductor - Diodes Division VS-MBR40L15CWPBF
- Part No.:
- VS-MBR40L15CWPBF
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Diode Arrays
- Package:
- TO-247-3
- Datasheet:
-
VS-MBR40L15CWPBF.pdf
- Description:
- DIODE ARR SCHOTT 15V 20A TO247AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,553
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Product details
Overview
VS-MBR40L15CWPBF from Vishay Semiconductors is a high-performance dual common-cathode Schottky rectifier optimized for OR-ing in parallel power supplies, with 15 V reverse voltage rating, 2 × 20 A average forward current per leg, and ultralow 0.26 V forward voltage at 20 A and 125 °C junction temperature. It enables efficient redundant power subsystems in telecom and server PSUs.
For engineers reviewing the VS-MBR40L15CWPBF datasheet, VS-MBR40L15CWPBF pinout, VS-MBR40L15CWPBF application, or VS-MBR40L15CWPBF equivalent, key selection criteria include low VF at high temperature, rugged avalanche energy rating (5 mJ), TO-247AC 3L thermal performance (RthJC = 1.4 °C/W per leg), and JEDEC JESD47 qualification for industrial reliability.
Technical Context
This device integrates two independent Schottky diodes in a single TO-247AC 3L package with shared cathode connection, enabling true dual-leg OR-ing without external interconnects. Its proprietary barrier technology sustains 125 °C junction operation under VR < 5 V while maintaining sub-0.34 V VF at 20 A/125 °C.
The module features guard ring protection for enhanced surge robustness and high-purity epoxy encapsulation rated for moisture resistance and mechanical strength. It supports high-frequency switching with 2000 pF junction capacitance per leg at 5 V and dV/dt capability up to 10,000 V/µs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VR | 15 V DC reverse voltage - defines maximum blocking capability in OR-ing or reverse battery protection circuits |
| IF(AV) per leg | 20 A at TC = 86 °C - sets continuous current handling per anode path under heatsink-cooled conditions |
| VF @ 20 A, 125 °C | 0.26 V typical - enables <1 W conduction loss per leg at full load, critical for high-efficiency 48 V input systems |
| EAS | 5 mJ per leg - provides unclamped inductive switching margin during hot-swap or fault transients |
| RthJC per leg | 1.4 °C/W - allows direct thermal interface to heatsink with predictable junction-to-case temperature rise |
| CT @ 5 V | 2000 pF per leg - limits capacitive loading on high-speed control loops in synchronous rectifier gate drivers |
| dV/dt | 10,000 V/µs - ensures stable operation during fast-rising bus transients without false turn-on |
Pinout & Package
TO-247AC 3L package with isolated mounting tab (non-electrical), 6 g mass, and standard JEDEC outline (per doc 96138). Pin 1 and Pin 2 are anodes; Pin 3 is common cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode 1 | Input terminal for first power rail in dual-rail OR-ing configuration |
| Pin 2 | Anode 2 | Input terminal for second power rail - electrically isolated from Pin 1 |
| Pin 3 | Common Cathode | Single output node tied to system VOUT; enables compact layout with shared output trace |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow forward voltage | 0.26 V typical at 20 A/125 °C - reduces conduction loss by >30 % vs. standard Schottkys in 48 V OR-ing |
| Guard ring structure | Enhances ruggedness against repetitive surge and ESD events - validated per JEDEC JESD47 |
| High-purity epoxy encapsulation | Improves moisture resistance (MSL 1) and mechanical integrity during thermal cycling in telecom base stations |
| 125 °C junction rating | Enables operation in high-ambient environments (e.g., sealed server chassis) without derating |
| Halogen-free & RoHS-compliant | N3 suffix confirms lead-free terminations and halogen-free molding compound per IEC 61249-2-21 |
Applications
| Telecom Power OR-ing | Server Redundant PSU |
|---|---|
Use Scenario: Dual 48 V input rails feeding a common backplane with automatic failover. IC Role / Device Role / Timing Role: Dual Schottky OR-ing diode providing low-loss, bidirectional isolation between parallel power sources. Use Value: 0.26 V VF at 125 °C minimizes heat generation and improves system efficiency by ≥1.2 % over legacy 0.45 V alternatives. |
Use Scenario: Hot-swappable 1+1 redundant AC/DC modules powering CPU VRMs in rack servers. IC Role / Device Role / Timing Role: Common-cathode Schottky module enabling seamless current sharing and reverse-current blocking during module insertion/removal. Use Value: 5 mJ EAS withstands inductive kickback from VRM output chokes during hot-swap transitions. |
| Industrial PLC Power Supply | Reverse Battery Protection |
Use Scenario: 24 V DC input with dual feed paths for mission-critical programmable logic controllers. IC Role / Device Role / Timing Role: High-reliability OR-ing element ensuring uninterrupted operation during primary supply failure. Use Value: JEDEC JESD47 qualification and 125 °C TJ rating support 10+ year field life in harsh factory environments. |
Use Scenario: Automotive-grade 12 V battery interface protecting downstream electronics from reverse polarity connection. IC Role / Device Role / Timing Role: Low-VF Schottky preventing excessive voltage drop while blocking reverse current during incorrect battery installation. Use Value: 0.34 V max VF at 20 A/100 °C ensures <700 mW dissipation - avoids thermal shutdown in confined enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS40L15CW | Same 15 V / 2 × 20 A rating but higher VF (0.32 V typ. @ 20 A/125 °C); RthJC = 1.6 °C/W per leg | Slightly lower efficiency in high-temperature OR-ing; acceptable where thermal margin exists | Prefer VS-MBR40L15CWPBF when minimizing conduction loss or operating near 125 °C TJ |
| IXYS MBR40L15CT | Identical electrical specs but TO-247AD package (isolated tab); no N3 halogen-free marking | Requires insulated mounting hardware; not compliant with latest environmental mandates | Choose VS-MBR40L15CWPBF for RoHS/halogen-free compliance and standardized TO-247AC thermal interface |
Compared with STPS40L15CW and IXYS MBR40L15CT, the VS-MBR40L15CWPBF delivers the lowest verified VF at elevated temperature and guaranteed halogen-free construction, making it optimal for thermally constrained, high-reliability OR-ing designs requiring regulatory compliance.
Availability
VS-MBR40L15CWPBF is available at Aetrix Electronics and suitable for telecom OR-ing, server redundant PSUs, and industrial PLC power supplies requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for VS-MBR40L15CWPBF 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 Semiconductors is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, and optoelectronics for industrial, automotive, and computing markets.
The VS-MBR40L15CWPBF belongs to Vishay's MBR40LxxCW series of low-VF Schottky rectifiers engineered specifically for high-efficiency OR-ing and redundant power architectures in datacenter and telecom infrastructure.
FAQ
What is the maximum junction temperature rating for VS-MBR40L15CWPBF?
The VS-MBR40L15CWPBF is rated for continuous operation up to 125 °C junction temperature, validated per JEDEC JESD47. This rating applies under VR < 5 V and is supported by its thermal resistance of 1.4 °C/W per leg and high-purity epoxy encapsulation. The VS-MBR40L15CWPBF maintains stable VF and leakage performance within this range, enabling deployment in sealed or high-ambient environments.
Does VS-MBR40L15CWPBF support OR-ing of two independent 48 V power supplies?
Yes - the VS-MBR40L15CWPBF's dual-anode, common-cathode configuration is explicitly optimized for OR-ing applications. Each anode handles up to 20 A average current, and the 15 V VR rating provides sufficient margin for 48 V systems with transient overshoot. Its 0.26 V VF at 125 °C ensures minimal voltage imbalance and efficient current sharing between supplies in the VS-MBR40L15CWPBF-based design.
What is the avalanche energy rating of VS-MBR40L15CWPBF and how is it applied?
The VS-MBR40L15CWPBF has a non-repetitive avalanche energy rating of 5 mJ per leg, measured at TJ = 25 °C with IAS = 2 A and L = 6 mH. This rating supports safe operation during unclamped inductive switching events, such as hot-swap transients in redundant PSUs. The VS-MBR40L15CWPBF's guard ring structure enhances ruggedness for repeated exposure to such stresses.
Is VS-MBR40L15CWPBF halogen-free and RoHS-compliant?
Yes - the "N3" suffix in VS-MBR40L15CWPBF denotes full compliance with RoHS Directive 2011/65/EU and halogen-free status per IEC 61249-2-21. The device uses lead-free terminations and halogen-free molding compound, confirmed in Vishay's material declaration doc 99912. This makes the VS-MBR40L15CWPBF suitable for environmentally regulated end equipment including EU telecom and industrial systems.
What thermal resistance values apply to VS-MBR40L15CWPBF in circuit design?
The VS-MBR40L15CWPBF specifies RthJC = 1.4 °C/W per leg (junction-to-case) and RthCS = 0.24 °C/W typical (case-to-heatsink) with smooth, greased mounting surface. These values enable accurate junction temperature prediction: TJ = TC + (Ploss × 1.4). For full-device thermal modeling, the package-level RthJC is 0.7 °C/W. Proper heatsinking is essential to maintain the VS-MBR40L15CWPBF within its 125 °C TJ limit.
VS-MBR40L15CWPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- TO-247-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 15 V
- Current - Average Rectified (Io) (per Diode):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 420 mV @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 10 mA @ 15 V
- Operating Temperature - Junction:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-247AC
VS-MBR40L15CWPBF FAQ
1.How can I place an order for VS-MBR40L15CWPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for VS-MBR40L15CWPBF 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-MBR40L15CWPBF reliable?
The price and inventory of VS-MBR40L15CWPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VS-MBR40L15CWPBF is usually 5 days.
3.What payment methods are accepted for VS-MBR40L15CWPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-MBR40L15CWPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VS-MBR40L15CWPBF?
VS-MBR40L15CWPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VS-MBR40L15CWPBF 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-MBR40L15CWPBF?
For technical support, including VS-MBR40L15CWPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-MBR40L15CWPBF requirements.
6.How does Aetrix verify that VS-MBR40L15CWPBF is sourced from the original manufacturer or authorized distributors?
All VS-MBR40L15CWPBF 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-MBR40L15CWPBF meets industry standards.
7.What is the process for return or replacement of VS-MBR40L15CWPBF?
All VS-MBR40L15CWPBF units undergo pre-shipment inspection (PSI). If there is an issue with VS-MBR40L15CWPBF, 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-MBR40L15CWPBF part is unused and in its original packaging.
Return procedure for VS-MBR40L15CWPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VS-MBR40L15CWPBF Tags
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BAV99,215
Nexperia USA Inc.
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BAT54SLT1G
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BAV70LT1G
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BAT54CLT1G
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BAT54S-7-F
Diodes Incorporated
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BAV99LT1G
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BAT54S,215
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MMBD1503-TP
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