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Vishay General Semiconductor - Diodes Division VS-MBRB2045CTPBF
- Part No.:
- VS-MBRB2045CTPBF
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
VS-MBRB2045CTPBF.pdf
- Description:
- DIODE ARR SCHOTT 45V 10A TO263AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,154
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Product details
Overview
VS-MBRB2045CTPBF from Vishay Semiconductors is a high-performance dual common-cathode Schottky rectifier in D2PAK (TO-263AB) package, rated for 2 × 10 A average forward current per leg, 45 V maximum reverse voltage, and 0.57 V forward voltage at 10 A and 125 °C - optimized for high-efficiency DC/DC converters and reverse battery protection circuits in automotive and industrial power systems.
For engineers reviewing the VS-MBRB2045CTPBF datasheet, VS-MBRB2045CTPBF pinout, VS-MBRB2045CTPBF application, or VS-MBRB2045CTPBF equivalent, key selection criteria include its 150 °C junction rating, low 0.72 V VF at 20 A (25 °C), 8 mJ non-repetitive avalanche energy, MSL Level 1 moisture sensitivity, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This center-tap Schottky rectifier integrates two independent die sharing a common cathode terminal, enabling synchronous freewheeling and bidirectional clamping in half-bridge and buck converter topologies. Its proprietary barrier technology minimizes reverse leakage up to 150 °C, with thermal resistance RthJC of 2.0 °C/W per leg supporting high-power density designs without forced cooling.
The device operates with fast switching characteristics: dV/dt capability of 10,000 V/μs, junction capacitance of 600 pF at 5 V, and typical series inductance of 8.0 nH - making it suitable for high-frequency (>100 kHz) SMPS where diode recovery loss and EMI must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VR | 45 V - Maximum DC reverse blocking voltage; defines safe operating range in 36 V automotive systems and 48 V industrial rails. |
| IF(AV) | 2 × 10 A - Continuous average forward current per anode leg at TC = 135 °C; supports 20 A total output in dual-phase configurations. |
| VF | 0.57 V at 10 A, 125 °C - Low conduction loss enables >95% efficiency in 12 V–48 V buck converters at full load. |
| IRM | 15 mA at 125 °C - Ultra-low reverse leakage preserves system standby power in always-on automotive modules. |
| TJ(max) | 150 °C - Extended junction temperature rating allows operation in under-hood environments without derating. |
| EAS | 8 mJ - Avalanche energy rating permits robust handling of inductive turn-off transients in motor drive freewheel paths. |
| RthJC | 2.0 °C/W per leg - Enables direct heatsink mounting with predictable thermal rise; supports 20 W dissipation per leg at ΔT = 40 °C. |
Pinout & Package
D2PAK (TO-263AB) surface-mount package with exposed thermal pad on underside; 3-pin configuration (pins 1–3) plus metal tab (pin 4) electrically connected to cathode. Dimensions: 10.67 mm × 9.65 mm × 4.83 mm (L × W × H); weight ≈ 2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode 1 | Input terminal for first Schottky die; connects to high-side switch node in synchronous rectification. |
| 2 | Common Cathode | Shared cathode node for both dies; serves as output reference and primary thermal path to PCB copper pour. |
| 3 | Anode 2 | Input terminal for second Schottky die; used for complementary phase or redundant path in dual-output supplies. |
| Tab (Pin 4) | Common Cathode (mechanical) | Electrically tied to Pin 2; provides low-inductance, high-current return path and 80% of thermal conduction to heatsink. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics; includes temperature cycling, humidity bias, and ESD testing per stress requirements. |
| Guard ring structure | Enhances edge termination ruggedness, reducing risk of surface flashover during voltage transients in 12 V/24 V battery systems. |
| MSL Level 1 (260 °C peak) | Enables standard lead-free reflow without pre-baking; eliminates moisture-related popcorning during SMT assembly. |
| High-purity epoxy encapsulation | Provides IP67-equivalent moisture resistance and mechanical stability in humid or vibration-prone environments (e.g., engine control units). |
| Low 8.0 nH series inductance | Minimizes voltage overshoot during diode turn-off, reducing snubber component count and improving EMI performance in >200 kHz converters. |
Applications
| Automotive DC/DC Converter | Industrial 48 V Telecom Supply |
|---|---|
|
Use Scenario: Step-down conversion from 48 V intermediate bus to 12 V auxiliary rail in EV charging stations and base station power systems. IC Role / Device Role / Timing Role: Dual-leg synchronous rectifier replacing MOSFETs in secondary-side synchronous rectification; leverages common-cathode topology for shared gate drive and layout simplification. Use Value: 0.57 V VF at 125 °C reduces conduction loss by 35% vs. silicon diodes, enabling 96.2% peak efficiency at 20 A output while maintaining <85 °C case temperature. |
Use Scenario: High-reliability freewheeling path in isolated flyback and forward converters powering industrial PLC I/O modules. IC Role / Device Role / Timing Role: Bidirectional clamp diode across transformer secondary; handles reverse recovery energy during MOSFET turn-on in discontinuous conduction mode. Use Value: 8 mJ EAS rating absorbs repetitive inductive spikes without degradation, extending MTBF beyond 100,000 hours in continuous 24/7 operation. |
| Reverse Battery Protection | Server VRM Output Stage |
|
Use Scenario: Polarity protection circuit in automotive infotainment head units and ADAS camera modules powered from vehicle battery. IC Role / Device Role / Timing Role: Low-loss series-blocking diode placed between battery input and main DC/DC controller; conducts only during correct polarity insertion. Use Value: 0.72 V VF at 20 A (25 °C) limits voltage drop to <1.5% of 12 V nominal, preserving brown-out margin while dissipating <1.5 W at full load. |
Use Scenario: Output rectification in multiphase buck converters supplying CPU/GPU core voltage (0.8–1.2 V) in AI accelerator servers. IC Role / Device Role / Timing Role: Secondary-side Schottky clamp in interleaved phases; shares common cathode to simplify PCB routing and reduce ground bounce. Use Value: 600 pF junction capacitance and 10,000 V/μs dV/dt support clean switching edges at 1 MHz+ frequencies, minimizing gate driver losses and improving transient response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS2045CGY | Same D2PAK package, 2 × 10 A, 45 V, but VF = 0.62 V @ 10 A/125 °C; no AEC-Q101 qualification. | Lacks automotive qualification; suitable for industrial/commercial power supplies only. | Select when AEC-Q101 is not required and cost sensitivity outweighs 50 mV VF penalty. |
| ON Semi MBR2045CT | TO-220 package (not surface-mount); identical electrical specs but higher RthJC = 3.0 °C/W and no MSL Level 1 rating. | Requires through-hole assembly and larger heatsink; unsuitable for high-density automotive PCBs. | Choose only for legacy through-hole designs or prototyping where thermal margin exceeds 40 °C. |
Compared with STPS2045CGY and MBR2045CT, the VS-MBRB2045CTPBF uniquely combines AEC-Q101 qualification, MSL Level 1 compatibility, and lowest VF among 45 V dual Schottky rectifiers in D2PAK - making it the preferred choice for production automotive and high-reliability industrial SMPS where board space, thermal performance, and qualification compliance are jointly constrained.
Availability
VS-MBRB2045CTPBF is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial 48 V telecom supplies, and reverse battery protection circuits requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for VS-MBRB2045CTPBF 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 solutions.
The VS-MBRB2045CTPBF belongs to Vishay's high-reliability Schottky rectifier product line, engineered specifically for automotive and industrial power conversion where low forward voltage, high-temperature operation, and AEC-Q101 compliance are mandatory design requirements.
FAQ
What is the maximum junction temperature rating for VS-MBRB2045CTPBF?
The VS-MBRB2045CTPBF has a maximum junction temperature (TJ) rating of +150 °C, verified per AEC-Q101 stress testing. This allows uninterrupted operation in under-hood automotive environments and high-ambient industrial enclosures without thermal derating below 10 A per leg at TC = 135 °C. The 150 °C rating is supported by Vishay's proprietary barrier technology and high-temperature epoxy encapsulation.
Is VS-MBRB2045CTPBF pin-compatible with TO-262 variants like VS-MBR2045CT-1PBF?
No, VS-MBRB2045CTPBF is not pin-compatible with VS-MBR2045CT-1PBF. The VS-MBRB2045CTPBF uses a D2PAK (TO-263AB) package with 3 signal pins and an exposed cathode tab, while the VS-MBR2045CT-1PBF uses a TO-262AA package with 3 leads and no thermal tab. Their pin assignments differ: D2PAK assigns Anode–Cathode–Anode (1–2–3), whereas TO-262 uses Anode–Cathode–Anode with different mechanical spacing and thermal interface requirements.
Does VS-MBRB2045CTPBF support lead-free reflow soldering?
Yes, VS-MBRB2045CTPBF is rated MSL Level 1 per J-STD-020 and qualified for peak reflow temperatures up to 260 °C. Its high-purity epoxy encapsulation and lead (Pb)-free terminations enable standard SAC305 lead-free reflow profiles without pre-baking. The device meets RoHS Directive 2011/65/EU and Vishay's material categorization per doc. 99912.
What is the avalanche energy rating of VS-MBRB2045CTPBF and how is it applied in circuit design?
The VS-MBRB2045CTPBF has a non-repetitive avalanche energy (EAS) rating of 8 mJ per leg at TJ = 25 °C, measured with IAS = 2 A and L = 4 mH. This rating enables safe clamping of inductive turn-off transients in freewheeling paths - for example, in motor drive half-bridges or relay coil suppression - without requiring external TVS diodes or snubbers, provided single-event energy remains below 8 mJ.
How does the common-cathode configuration of VS-MBRB2045CTPBF benefit PCB layout in dual-phase converters?
The common-cathode configuration of VS-MBRB2045CTPBF consolidates both cathode returns into a single low-inductance node (Pin 2 + thermal tab), reducing ground loop area and minimizing voltage spikes during simultaneous switching. In dual-phase buck converters, this allows symmetrical placement of the two anodes (Pins 1 and 3) with shared cathode copper pour - cutting layout complexity, parasitic inductance, and EMI compared to using two discrete Schottky diodes.
VS-MBRB2045CTPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io) (per Diode):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 570 mV @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 45 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
VS-MBRB2045CTPBF FAQ
1.How can I place an order for VS-MBRB2045CTPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for VS-MBRB2045CTPBF 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-MBRB2045CTPBF reliable?
The price and inventory of VS-MBRB2045CTPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VS-MBRB2045CTPBF is usually 5 days.
3.What payment methods are accepted for VS-MBRB2045CTPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-MBRB2045CTPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VS-MBRB2045CTPBF?
VS-MBRB2045CTPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VS-MBRB2045CTPBF 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-MBRB2045CTPBF?
For technical support, including VS-MBRB2045CTPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-MBRB2045CTPBF requirements.
6.How does Aetrix verify that VS-MBRB2045CTPBF is sourced from the original manufacturer or authorized distributors?
All VS-MBRB2045CTPBF 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-MBRB2045CTPBF meets industry standards.
7.What is the process for return or replacement of VS-MBRB2045CTPBF?
All VS-MBRB2045CTPBF units undergo pre-shipment inspection (PSI). If there is an issue with VS-MBRB2045CTPBF, 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-MBRB2045CTPBF part is unused and in its original packaging.
Return procedure for VS-MBRB2045CTPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VS-MBRB2045CTPBF Tags
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