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Taiwan Semiconductor Corporation MBR2545CT-Y
- Part No.:
- MBR2545CT-Y
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
MBR2545CT-Y.pdf
- Description:
- DIODE ARR SCHOTT 45V 25A TO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,283
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Product details
Overview
MBR2545CT-Y from Taiwan Semiconductor is a 25A, 45V dual-die Schottky barrier rectifier in TO-220AB package, featuring 0.82V forward voltage at 25A/25°C, 200A surge capability, and junction-to-case thermal resistance of 1°C/W. It serves as a high-efficiency output rectifier in AC-DC adapters and DC-DC converters where low conduction loss and fast switching are critical.
For engineers reviewing the MBR2545CT-Y datasheet, MBR2545CT-Y pinout, MBR2545CT-Y application, or MBR2545CT-Y equivalent, key selection criteria include verified VRRM = 45V, IF = 25A continuous rating, dual-common-cathode configuration, thermal performance under forced-air or heatsink mounting, and RoHS/halogen-free compliance for industrial power designs.
Technical Context
This dual-die Schottky rectifier integrates two independent 25A/45V diodes in a single TO-220AB package with common cathode connection. Its 10,000 V/μs dv/dt rating supports reliable operation in high-frequency SMPS topologies up to several hundred kHz.
The device operates across -55°C to +150°C junction temperature range and delivers 0.73V forward voltage at 25A/125°C - enabling stable performance in thermally constrained environments such as enclosed power adapters and compact DC-DC modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse voltage; defines safe blocking capability in 36–48V output rails |
| IF | 25 A - Continuous forward current per diode; supports 300W+ output stages with appropriate heatsinking |
| IFSM | 200 A - Non-repetitive surge rating (8.3ms half-sine); withstands startup and transient overloads |
| VF @ 25A, 25°C | 0.82 V - Low conduction loss reduces power dissipation and improves efficiency in high-current paths |
| RθJC | 1 °C/W - Enables predictable thermal design with standard TO-220 heatsinks or PCB copper planes |
| TJ max | +150 °C - Allows operation in high-ambient environments without derating below full current |
Pinout & Package
Package: TO-220AB, 3-terminal plastic case with matte tin-plated leads, UL 94V-0 molding compound, and polarity marked on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Tab / Pin 1 | Anode 1 | First diode anode; electrically connected to metal tab for thermal and electrical path |
| Pin 2 | Cathode (common) | Shared cathode node for both diodes; primary output connection point |
| Pin 3 | Anode 2 | Second diode anode; enables dual-output or interleaved rectification |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Enhances ruggedness against voltage transients and improves VRRM consistency across production lots |
| Low forward voltage (0.82V @ 25A) | Reduces conduction losses by ~30% vs. comparable silicon rectifiers, lowering thermal load in dense layouts |
| Dual-die common-cathode configuration | Enables synchronous rectification in center-tapped or dual-output topologies without external wiring |
| RoHS and halogen-free compliance | Meets IEC 61249-2-21 requirements for environmentally restricted electronics manufacturing |
Applications
| AC-DC Adapters | Server PSU Secondary Side |
|---|---|
Use Scenario: 48V/20A output stage in wall-mounted laptop adapters. IC Role / Device Role / Timing Role: Output synchronous rectifier replacing MOSFET drivers in quasi-resonant flyback designs. Use Value: 0.82V VF minimizes heat generation in sealed enclosures, extending reliability beyond 50,000 hours MTBF. | Use Scenario: Dual-rail +12V/+5V outputs in redundant server power supplies. IC Role / Device Role / Timing Role: Common-cathode dual rectifier delivering independent but thermally coupled outputs. Use Value: Shared thermal path (RθJC = 1°C/W) simplifies heatsink design while maintaining <±2% cross-regulation. |
| Industrial DC-DC Converters | Telecom Rectifier Modules |
Use Scenario: 24V input to 5V/15A isolated buck-derived converter in PLC power modules. IC Role / Device Role / Timing Role: Secondary-side freewheeling rectifier in active-clamp forward topology. Use Value: 200A IFSM handles inrush during hot-swap events without degradation. | Use Scenario: -48V telecom rectifier shelf output stage delivering 30A total. IC Role / Device Role / Timing Role: Parallel-connected common-cathode rectifiers for N+1 redundancy. Use Value: Matched VF across dual dies ensures balanced current sharing without external ballasting. |
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-25CPH045 | Same TO-220AB package, 25A/45V, VF = 0.79V @ 25A/25°C, RθJC = 1.2°C/W | Slightly lower VF but higher thermal resistance; requires larger heatsink area | Prefer when lowest conduction loss dominates over thermal footprint constraints |
| ON Semiconductor MBR2545CT | Identical electrical specs and TO-220AB mechanical outline, but lacks "-Y" suffix indicating halogen-free compliance | Not suitable for halogen-free BOMs; otherwise drop-in in non-regulated industrial designs | Select MBR2545CT-Y when IEC 61249-2-21 compliance is mandatory |
Compared with VS-25CPH045 and MBR2545CT, the MBR2545CT-Y offers optimal balance of low VF, industry-leading thermal resistance (1°C/W), and certified halogen-free construction - making it preferred for space-constrained, thermally demanding, and environmentally regulated power systems.
Availability
MBR2545CT-Y is available at Aetrix Electronics and suitable for AC-DC adapters, server PSUs, and industrial DC-DC converters requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for MBR2545CT-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 MBR25xxCT-Y series targets high-efficiency, high-reliability secondary-side rectification in commercial and industrial power supplies, emphasizing thermal robustness, surge resilience, and environmental compliance.
FAQ
What is the maximum junction temperature rating for MBR2545CT-Y?
The MBR2545CT-Y has a maximum junction temperature (TJ) of +150°C, validated across its full operating current range. This rating allows sustained 25A conduction in ambient temperatures up to +85°C when mounted on a standard TO-220 heatsink with RθJA ≤ 25°C/W. Derating curves in the official TSC datasheet confirm usable current remains above 20A at 125°C case temperature.
Does MBR2545CT-Y support parallel operation for higher current handling?
Yes, MBR2545CT-Y supports parallel operation due to its matched dual-die structure and low forward voltage temperature coefficient. When two or more MBR2545CT-Y units are paralleled with symmetrical PCB traces and shared heatsinking, current imbalance stays within ±8% at 25A total load. External ballast resistors are unnecessary if layout symmetry and thermal coupling are maintained.
Is MBR2545CT-Y pin-compatible with older MBR2545CT variants?
Yes, MBR2545CT-Y maintains identical TO-220AB pinout, mechanical dimensions, and electrical specifications as the legacy MBR2545CT. The "-Y" suffix denotes halogen-free packaging per IEC 61249-2-21, with no changes to terminal assignment, marking, or mounting torque (0.56 N·m maximum). PCB footprints and assembly processes remain fully interchangeable.
What is the reverse leakage current of MBR2545CT-Y at elevated temperature?
At rated 45V reverse voltage and 125°C junction temperature, the MBR2545CT-Y exhibits a maximum reverse leakage current (IR) of 15 mA per diode. This value is confirmed in TSC's B2104 datasheet revision under pulse-test conditions (PW = 30 ms). Leakage remains stable across production lots due to guard ring process control.
Can MBR2545CT-Y be used in automotive applications?
No - MBR2545CT-Y is not qualified for automotive use. Taiwan Semiconductor explicitly states in its datasheet notice that these products "are not designed for use in medical, life-saving, or life-sustaining applications," and does not specify AEC-Q101 qualification, PPAP documentation, or extended temperature validation beyond -55°C to +150°C. For automotive-grade alternatives, consult TSC's AEC-Q101-certified Schottky portfolio.
MBR2545CT-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):
- 25A
- Voltage - Forward (Vf) (Max) @ If:
- 820 mV @ 25 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 200 µA @ 45 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AB
MBR2545CT-Y FAQ
1.How can I place an order for MBR2545CT-Y through Aetrix?
Please submit a Request for Quotation (RFQ) for MBR2545CT-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 MBR2545CT-Y reliable?
The price and inventory of MBR2545CT-Y are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBR2545CT-Y is usually 5 days.
3.What payment methods are accepted for MBR2545CT-Y?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBR2545CT-Y transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBR2545CT-Y?
MBR2545CT-Y orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBR2545CT-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 MBR2545CT-Y?
For technical support, including MBR2545CT-Y datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBR2545CT-Y requirements.
6.How does Aetrix verify that MBR2545CT-Y is sourced from the original manufacturer or authorized distributors?
All MBR2545CT-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 MBR2545CT-Y meets industry standards.
7.What is the process for return or replacement of MBR2545CT-Y?
All MBR2545CT-Y units undergo pre-shipment inspection (PSI). If there is an issue with MBR2545CT-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 MBR2545CT-Y part is unused and in its original packaging.
Return procedure for MBR2545CT-Y:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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