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Taiwan Semiconductor Corporation MBR2045CT-Y
- Part No.:
- MBR2045CT-Y
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
MBR2045CT-Y.pdf
- Description:
- DIODE ARR SCHOTT 45V 20A TO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,281
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Product details
Overview
MBR2045CT-Y from Taiwan Semiconductor is a 20A, 45V dual-die Schottky barrier rectifier in TO-220AB package, featuring 0.84V forward voltage at 20A/25°C, 150A surge capability, and 1°C/W junction-to-case thermal resistance. It serves as a high-efficiency output rectifier in AC/DC adapters and DC/DC converters.
For engineers reviewing the MBR2045CT-Y datasheet, MBR2045CT-Y pinout, MBR2045CT-Y application, or MBR2045CT-Y equivalent, key selection criteria include repetitive peak reverse voltage (45V), forward current rating (20A), thermal resistance (1°C/W), and dual-common-cathode configuration for synchronous rectification or dual-output designs.
Technical Context
This device integrates two independent Schottky diodes in a single TO-220AB package with common cathode connection, enabling dual-channel rectification without external parallel wiring. Its low VF and fast recovery support high-frequency switching topologies up to 200 kHz.
The 1°C/W RθJC, guard ring overvoltage protection, and JESD201 Class 1A whisker-tested matte tin leads ensure robust thermal management and reliability in thermally constrained industrial power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse blocking voltage per diode; defines safe operating range in 36–42 V nominal input SMPS outputs. |
| IF | 20 A - Continuous average forward current per diode; supports 40 W+ output stages at 12 V with margin. |
| IFSM | 150 A - Non-repetitive surge current (8.3 ms half-sine); withstands cold-start inrush in 100–240 VAC inputs. |
| VF @ 20A, 25°C | 0.84 V - Low conduction loss per diode; reduces power dissipation to ≤16.8 W at full load. |
| RθJC | 1 °C/W - Junction-to-case thermal resistance; enables direct heatsink mounting for ≤17°C temperature rise at 17 W dissipation. |
| IR @ 45V, 25°C | ≤100 µA - Low leakage per diode; minimizes standby power loss in energy-efficient adapters. |
| TJ max | 150 °C - Maximum junction temperature; supports operation in sealed enclosures up to 85°C ambient with proper heatsinking. |
Pinout & Package
Package: TO-220AB, 3-terminal plastic case with isolated tab (cathode-connected tab), matte tin-plated leads, UL 94V-0 molding compound, 1.88 g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Left) | Anode 1 | Input terminal for first Schottky diode; connects to transformer secondary or switch node in flyback/forward topologies. |
| Pin 2 (Center) | Cathode (Common) | Shared cathode node for both diodes; electrically connected to metal tab; must be isolated from chassis unless referenced to system ground. |
| Pin 3 (Right) | Anode 2 | Input terminal for second Schottky diode; enables dual-output or interleaved rectification without external cathode tie. |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage | 0.84 V @ 20A/25°C - Reduces conduction loss by ~35% vs. comparable silicon rectifiers, improving efficiency in 12–24 V output rails. |
| Guard ring structure | Integrated overvoltage protection - Enhances ruggedness against transient spikes in unregulated input stages without external snubbers. |
| Dual-die common-cathode configuration | Single-package dual-anode topology - Eliminates interconnect inductance and layout asymmetry in dual-output converters. |
| RoHS & halogen-free | Compliant with IEC 61249-2-21 - Meets environmental requirements for industrial and consumer power supply certifications. |
| JESD201 Class 1A whisker resistance | Qualified for long-term solder joint integrity - Ensures reliability in high-temperature, high-humidity environments without tin whisker growth risk. |
Applications
| Laptop AC Adapter Output Stage | Industrial DC/DC Converter Secondary Side |
|---|---|
Use Scenario: Rectifying 19 V/3.42 A output from a 65 W flyback converter in compact laptop adapters. IC Role / Device Role / Timing Role: Dual-anode Schottky rectifier delivering regulated 19 V with minimal voltage drop and heat generation. Use Value: 0.84 V forward drop enables ≥92% efficiency at full load while maintaining <75°C case temperature with minimal heatsinking. | Use Scenario: Dual-rail 12 V/5 V output rectification in DIN-rail mounted 48 V input industrial DC/DC modules. IC Role / Device Role / Timing Role: Common-cathode dual rectifier providing isolated +12 V and +5 V outputs from separate transformer windings. Use Value: Shared cathode eliminates need for external bus bar, reducing PCB area by 25% and parasitic inductance in high-current paths. |
| LED Driver Power Supply | Telecom Wall Adapter |
Use Scenario: Constant-current LED driver with 36 V output feeding series-connected high-brightness LEDs. IC Role / Device Role / Timing Role: High-current output rectifier handling 20 A pulsed current during PWM dimming cycles. Use Value: 150 A surge rating absorbs LED string turn-on transients; 150°C max junction temperature supports sealed fixture operation. | Use Scenario: Universal-input 100–240 VAC telecom wall adapter delivering 5 V/2 A to VoIP phones and gateways. IC Role / Device Role / Timing Role: Primary-side synchronous rectifier replacing conventional diode in quasi-resonant flyback design. Use Value: 0.57 V VF at 10 A/125°C ensures stable regulation under high-ambient conditions without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-MBR2045CT | Same 45 V VRRM, 20 A IF, TO-220AB; VF = 0.82 V @ 20A/25°C; RθJC = 1.1°C/W. | Slightly higher thermal resistance requires 10% larger heatsink area for identical power dissipation. | Preferred where Vishay qualification or legacy BOM alignment is required; identical pinout and footprint. |
| ON Semiconductor MBR2045CT | Identical ratings and TO-220AB package; VF = 0.85 V @ 20A/25°C; IR = 120 µA @ 45V/25°C. | Higher leakage may increase standby loss in Energy Star-compliant designs. | Valid alternative when ON Semi sourcing is mandated; no layout change needed. |
Compared with VS-MBR2045CT and MBR2045CT, the MBR2045CT-Y offers the lowest forward voltage (0.84 V) and best thermal resistance (1°C/W), making it optimal for space-constrained, high-efficiency adapter designs where thermal headroom is limited.
Availability
MBR2045CT-Y is available at Aetrix Electronics and suitable for switching mode power supplies, AC/DC adapters, and DC/DC converters requiring stable component supply, RoHS compliance, and high surge current tolerance.
Supply support for MBR2045CT-Y 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global power electronics markets since 1979.
The MBR20xxCT-Y series targets cost-sensitive, high-volume power conversion applications-specifically AC/DC adapters, open-frame SMPS, and industrial DC/DC modules-where low VF, rugged surge capability, and TO-220AB thermal performance are critical.
FAQ
What is the maximum junction temperature rating for MBR2045CT-Y?
The MBR2045CT-Y has a maximum junction temperature (TJ) of 150°C, verified per TSC datasheet Version B2104. This rating allows reliable operation in enclosed power supplies with ambient temperatures up to 85°C when paired with appropriate heatsinking. The device's 1°C/W junction-to-case thermal resistance enables precise thermal design using standard TO-220 heatsinks. Always verify actual case temperature in final layout using thermal simulation or measurement.
Does MBR2045CT-Y support dual-output configurations?
Yes, MBR2045CT-Y supports dual-output configurations via its dual-anode, common-cathode internal structure. Pins 1 and 3 serve as independent anodes, while Pin 2 (and the metal tab) forms the shared cathode. This eliminates external cathode paralleling, reduces layout parasitics, and ensures matched conduction characteristics between channels-ideal for split-rail supplies like ±12 V or 5 V/12 V outputs in telecom and industrial converters.
What is the forward voltage of MBR2045CT-Y at 20A and 125°C?
The forward voltage of MBR2045CT-Y is 0.72 V at 20A and 125°C junction temperature, as specified in the Electrical Specifications table (TSC datasheet Version B2104, Page 3). This lower VF at elevated temperature improves efficiency stability across operating conditions and reduces thermal runaway risk compared to silicon rectifiers. Designers should use this value-not the 25°C spec-for worst-case thermal analysis.
Is MBR2045CT-Y RoHS and halogen-free compliant?
Yes, MBR2045CT-Y is fully RoHS compliant and halogen-free per IEC 61249-2-21, as confirmed in the Features section of the TSC datasheet (Version B2104). The molding compound meets UL 94V-0 flammability rating, and the matte tin-plated leads are solderable per J-STD-002. These qualifications support compliance with EU Directive 2011/65/EU and JEDEC standards for green electronics manufacturing.
What is the surge current rating of MBR2045CT-Y and how is it tested?
MBR2045CT-Y has a non-repetitive peak forward surge current (IFSM) rating of 150 A, tested per JEDEC standard with an 8.3 ms single half-sine wave superimposed on rated load. This rating ensures robustness against cold-start inrush currents in universal-input AC/DC adapters and motor drive auxiliary supplies. The guard ring structure further enhances transient overvoltage immunity beyond the 45 V VRRM rating.
MBR2045CT-Y Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io) (per Diode):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 700 mV @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 45 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AB
MBR2045CT-Y FAQ
1.How can I place an order for MBR2045CT-Y through Aetrix?
Please submit a Request for Quotation (RFQ) for MBR2045CT-Y 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 MBR2045CT-Y reliable?
The price and inventory of MBR2045CT-Y are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBR2045CT-Y is usually 5 days.
3.What payment methods are accepted for MBR2045CT-Y?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBR2045CT-Y transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBR2045CT-Y?
MBR2045CT-Y orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBR2045CT-Y 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 MBR2045CT-Y?
For technical support, including MBR2045CT-Y datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBR2045CT-Y requirements.
6.How does Aetrix verify that MBR2045CT-Y is sourced from the original manufacturer or authorized distributors?
All MBR2045CT-Y 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 MBR2045CT-Y meets industry standards.
7.What is the process for return or replacement of MBR2045CT-Y?
All MBR2045CT-Y units undergo pre-shipment inspection (PSI). If there is an issue with MBR2045CT-Y, 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 MBR2045CT-Y part is unused and in its original packaging.
Return procedure for MBR2045CT-Y:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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