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Taiwan Semiconductor Corporation MBR1045CT-Y
- Part No.:
- MBR1045CT-Y
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
MBR1045CT-Y.pdf
- Description:
- DIODE ARR SCHOTT 45V 10A TO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,913
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Product details
Overview
MBR1045CT-Y from Taiwan Semiconductor is a 10A, 45V dual-die Schottky barrier rectifier in TO-220AB package, featuring 0.70 V max forward voltage at 5A/25°C, 120A surge current capability, and guard ring overvoltage protection - deployed in high-efficiency AC/DC adapters and DC/DC converters.
For engineers reviewing the MBR1045CT-Y datasheet, MBR1045CT-Y pinout, MBR1045CT-Y application, or MBR1045CT-Y equivalent, key selection criteria include junction-to-case thermal resistance (1.5 °C/W), reverse leakage (100 µA @ 25°C), and dual-diode configuration for center-tapped transformer rectification.
Technical Context
This dual-die Schottky rectifier integrates two independent 45V/10A diodes in a single TO-220AB case with common cathode configuration. Its low VF (0.70 V typ. @ 5A/25°C) and high dv/dt rating (10,000 V/µs) support fast-switching topologies in SMPS designs.
The device operates across -55°C to +150°C junction temperature range, with 1.5 °C/W RθJC, enabling direct heatsink mounting without isolation washers. Guard ring structure enhances ruggedness against transient overvoltage events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Forward Current (IF) | 10 A continuous - supports high-current output rails in compact power supplies |
| Peak Reverse Voltage (VRRM) | 45 V - suitable for 36V nominal input systems with margin for transients |
| Forward Voltage (VF) | 0.70 V max @ 5A/25°C - reduces conduction loss vs. silicon diodes, improving efficiency |
| Surge Current (IFSM) | 120 A (8.3 ms half-sine) - withstands inrush and fault currents without failure |
| Junction Temp Range | -55°C to +150°C - enables operation in industrial and automotive under-hood environments |
| Thermal Resistance (RθJC) | 1.5 °C/W - allows direct heatsink attachment for effective thermal management |
| Reverse Leakage (IR) | 100 µA @ 45V/25°C - low leakage preserves standby efficiency in energy-sensitive designs |
Pinout & Package
Package: TO-220AB, 3-terminal plastic case with matte tin-plated leads, UL 94V-0 molding compound, and polarity marked on case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode A) | Anode of first diode | Connects to transformer secondary or switching node for independent rectification path |
| Pin 2 (Cathode) | Common cathode | Shared output node for dual-diode configuration; connects to output filter capacitor |
| Pin 3 (Anode B) | Anode of second diode | Enables center-tapped full-wave rectification without external wiring |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Improves ruggedness against repetitive overvoltage transients without derating |
| Low forward voltage | 0.70 V max @ 5A/25°C - directly lowers power dissipation and thermal load |
| Dual-die common-cathode layout | Eliminates need for external parallel diodes in full-wave center-tapped designs |
| RoHS & halogen-free compliance | Meets IEC 61249-2-21 - supports environmental requirements for global OEM shipments |
| JESD 201 Class 1A whisker resistance | Ensures long-term solder joint reliability in high-vibration or thermal cycling applications |
Applications
| Laptop AC Adapter | Industrial DC/DC Converter |
|---|---|
Use Scenario: Secondary-side rectification in 65W–90W offline flyback adapters. IC Role / Device Role / Timing Role: Dual-anode Schottky rectifier providing full-wave output with shared cathode return. Use Value: 0.70 V forward drop reduces conduction loss by ~40% vs. standard silicon diodes, lowering thermal stress on PCB layout. | Use Scenario: Output rectification in isolated 48V-to-12V telecom DC/DC modules. IC Role / Device Role / Timing Role: High-surge-capable Schottky pair handling transient loads up to 120A peak. Use Value: 120A IFSM rating sustains short-circuit conditions without degradation, improving system robustness. |
| LED Driver Power Supply | Automotive Infotainment PSU |
Use Scenario: Constant-current output stage in dimmable LED drivers with wide input range. IC Role / Device Role / Timing Role: Low-VF rectifier minimizing heat generation near sensitive analog control circuitry. Use Value: 1.5 °C/W RθJC enables direct heatsink mounting, avoiding thermal coupling to current-sense resistors. | Use Scenario: 12V auxiliary supply in head unit power tree with cold-crank tolerance. IC Role / Device Role / Timing Role: Dual-diode rectifier supporting redundant input paths or split-rail outputs. Use Value: -55°C to +150°C operating range ensures functionality during engine-off storage and under-hood hot-soak conditions. |
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-MBR1045CT | Same TO-220AB package, 0.72 V max VF @ 5A/25°C, 1.6 °C/W RθJC | Marginally higher thermal resistance requires slightly larger heatsink area | Preferred where Vishay qualification or legacy design reuse is required |
| ON Semiconductor MBR1045CT | Identical electrical specs; marking code lacks "-Y" suffix, RoHS-compliant but not explicitly halogen-free | No impact on function; halogen-free status may affect final product compliance reporting | Valid alternative when halogen-free certification is not mandated by end-customer |
Compared with MBR1045CT-Y, VS-MBR1045CT offers nearly identical performance but with 0.1 °C/W higher thermal resistance, while ON Semiconductor's MBR1045CT matches all electrical parameters but omits halogen-free verification - both require no PCB changes but differ in compliance documentation scope.
Availability
MBR1045CT-Y is available at Aetrix Electronics and suitable for laptop adapters, industrial DC/DC converters, and automotive infotainment power supplies requiring stable component supply and full RoHS/halogen-free compliance.
Supply support for MBR1045CT-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 and protection markets since 1979.
The MBR10xxCT-Y series targets high-efficiency, high-reliability AC/DC and DC/DC power conversion, emphasizing low VF, rugged surge handling, and environmentally compliant packaging for consumer and industrial applications.
FAQ
What is the maximum junction temperature rating for MBR1045CT-Y?
The MBR1045CT-Y has a maximum junction temperature (TJ) of +150°C and a minimum of -55°C. This wide operating range allows reliable use in thermally demanding environments such as enclosed power adapters or under-hood automotive electronics. The device maintains specified electrical performance across this full range, with forward voltage decreasing to 0.67 V at 10A/125°C.
Does MBR1045CT-Y support center-tapped transformer rectification?
Yes, MBR1045CT-Y supports center-tapped full-wave rectification via its dual-anode/common-cathode configuration. Pins 1 and 3 serve as independent anodes, while Pin 2 is the shared cathode - eliminating external diode pairing and reducing board space. This topology is widely used in cost-sensitive offline SMPS designs.
What is the reverse leakage current of MBR1045CT-Y at elevated temperature?
At rated 45V reverse voltage and 125°C junction temperature, MBR1045CT-Y exhibits a maximum reverse leakage current (IR) of 15 mA. This value is confirmed in the Electrical Specifications table and impacts standby power in low-load conditions - designers should verify system-level standby budget accordingly.
Is MBR1045CT-Y pin-compatible with other parts in the MBR10xxCT-Y family?
Yes, all MBR10xxCT-Y variants - including MBR1060CT-Y, MBR10100CT-Y, and MBR10200CT-Y - share identical TO-220AB mechanical outline, pin assignment, and mounting footprint. Voltage rating differences do not affect physical compatibility, enabling design reuse across input voltage ranges with only BOM change.
What does the "-Y" suffix indicate in MBR1045CT-Y?
The "-Y" suffix in MBR1045CT-Y denotes halogen-free compliance per IEC 61249-2-21 and full RoHS compliance. It distinguishes this variant from non-halogen-free equivalents like MBR1045CT (no suffix), ensuring alignment with environmental regulations for export to EU, Japan, and other regulated markets.
MBR1045CT-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):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 700 mV @ 10 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
MBR1045CT-Y FAQ
1.How can I place an order for MBR1045CT-Y through Aetrix?
Please submit a Request for Quotation (RFQ) for MBR1045CT-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 MBR1045CT-Y reliable?
The price and inventory of MBR1045CT-Y are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBR1045CT-Y is usually 5 days.
3.What payment methods are accepted for MBR1045CT-Y?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBR1045CT-Y transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBR1045CT-Y?
MBR1045CT-Y orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBR1045CT-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 MBR1045CT-Y?
For technical support, including MBR1045CT-Y datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBR1045CT-Y requirements.
6.How does Aetrix verify that MBR1045CT-Y is sourced from the original manufacturer or authorized distributors?
All MBR1045CT-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 MBR1045CT-Y meets industry standards.
7.What is the process for return or replacement of MBR1045CT-Y?
All MBR1045CT-Y units undergo pre-shipment inspection (PSI). If there is an issue with MBR1045CT-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 MBR1045CT-Y part is unused and in its original packaging.
Return procedure for MBR1045CT-Y:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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