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Taiwan Semiconductor Corporation MBRF2045CT-Y
- Part No.:
- MBRF2045CT-Y
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-220-3 Full Pack, Isolated Tab
- Datasheet:
-
MBRF2045CT-Y.pdf
- Description:
- DIODE ARR SCHOT 45V 20A ITO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,682
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Product details
Overview
MBRF2045CT-Y from Taiwan Semiconductor is a 20A, 45V dual-die Schottky barrier rectifier in ITO-220AB package, featuring 0.84V forward voltage at 20A/25°C, 150A surge current capability, and junction-to-case thermal resistance of 1.5°C/W. It serves as the output rectifier in high-efficiency AC/DC adapters and DC/DC converters.
For engineers reviewing the MBRF2045CT-Y datasheet, MBRF2045CT-Y pinout, MBRF2045CT-Y application, or MBRF2045CT-Y equivalent, key selection criteria include forward voltage at full load, thermal performance under continuous conduction, reverse leakage at elevated temperature, and mechanical mounting compatibility with ITO-220AB heatsink interfaces.
Technical Context
This dual-die common-cathode Schottky rectifier integrates two independent 20A/45V diodes sharing a single cathode terminal, enabling synchronous rectification or dual-output configurations. Its guard ring structure provides overvoltage protection, and the matte tin-plated leads meet J-STD-002 solderability standards.
The device operates across -55°C to +150°C junction temperature range, with 10,000 V/µs critical dv/dt rating ensuring robustness against fast-switching transients in SMPS topologies. Reverse leakage remains ≤100 µA at 25°C and ≤15 mA at 125°C under rated 45V reverse bias.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Forward Current (IF) | 20 A continuous - supports high-power adapter outputs without forced air cooling |
| Peak Repetitive Reverse Voltage (VRRM) | 45 V - suitable for 36V nominal DC bus systems with safety margin |
| Surge Current (IFSM) | 150 A (8.3 ms half-sine) - withstands inrush during cold start in SMPS |
| Forward Voltage (VF) | 0.84 V @ 20A/25°C - reduces conduction loss vs. silicon rectifiers by ~40% |
| Junction-to-Case Thermal Resistance (RθJC) | 1.5 °C/W - enables 15W dissipation with ≤22.5°C case-to-junction rise at 20A |
| Reverse Leakage (IR) | 15 mA @ 45V/125°C - limits standby power loss in thermally stressed environments |
Pinout & Package
Package: ITO-220AB - insulated TO-220 variant with internal dielectric barrier, UL 94V-0 molding compound, and 0.56 N·m maximum mounting torque. Designed for direct heatsink mounting via center tab.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Tab (Center) | Cathode (common) | Electrically connected to both diode cathodes; primary thermal path to heatsink |
| Lead 1 | Anode 1 | Input for first rectifier leg; isolated from Lead 2 and Tab except through die |
| Lead 2 | Anode 2 | Input for second rectifier leg; electrically independent of Lead 1 |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring overvoltage protection | Prevents premature avalanche breakdown during line transients in offline SMPS |
| Low forward voltage (0.84 V @ 20A) | Reduces power loss by ≥0.7 W per diode vs. comparable Si rectifiers at full load |
| Dual-die common-cathode configuration | Enables compact dual-output or interleaved rectification without external cathode tie |
| RoHS & halogen-free compliance | Fulfills IEC 61249-2-21 requirements for green manufacturing and end-of-life processing |
Applications
| AC/DC Adapters | Server Power Supplies |
|---|---|
Use Scenario: 65W–120W universal-input laptop adapters operating at 100–240VAC input. IC Role / Device Role / Timing Role: Output synchronous rectifier replacing MOSFETs in secondary-side regulation. Use Value: 0.84V VF minimizes conduction loss at 20A output, improving efficiency by 0.8–1.2% over Si alternatives. | Use Scenario: 12V/20A auxiliary rail in redundant ATX-style server PSUs. IC Role / Device Role / Timing Role: Dual-leg rectifier for parallel 12V outputs with shared cathode return. Use Value: Common-cathode layout reduces PCB trace inductance and improves EMI performance vs. discrete diodes. |
| Industrial DC/DC Converters | LED Driver Secondary Side |
Use Scenario: 48V input to 12V/20A isolated converter in factory automation controllers. IC Role / Device Role / Timing Role: Primary output rectifier handling continuous 20A load with 150A surge tolerance. Use Value: 1.5°C/W RθJC allows operation at 100°C case temperature without derating. | Use Scenario: Constant-current LED driver with 36V output for high-bay lighting fixtures. IC Role / Device Role / Timing Role: Low-VF rectifier minimizing heat generation near thermally sensitive LED arrays. Use Value: 15 mA IR at 125°C ensures stable output regulation even in enclosed, high-ambient enclosures. |
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-20CPH045 | Same ITO-220AB package, 20A/45V, VF = 0.78V @ 20A/25°C, RθJC = 1.6°C/W | Slightly lower VF but higher thermal resistance; requires marginally larger heatsink area | Preferred where ultra-low conduction loss dominates thermal design constraints |
| ON Semiconductor MBR2045CT | Identical electrical specs and pinout, but RoHS-compliant without halogen-free certification; same 1.5°C/W RθJC | No functional difference in circuit operation; differs only in material compliance documentation | Selected when halogen-free requirement is not mandated by end-equipment standard |
Compared with MBRF2045CT-Y, VS-20CPH045 offers marginally better conduction efficiency but demands tighter thermal management, while MBR2045CT matches all electrical and mechanical behavior but omits halogen-free validation-making MBRF2045CT-Y optimal for medical or automotive-tier supply chains requiring full IEC 61249-2-21 compliance.
Availability
MBRF2045CT-Y is available at Aetrix Electronics and suitable for AC/DC adapters, server power supplies, and industrial DC/DC converters requiring stable component supply with guaranteed long-term sourcing.
Supply support for MBRF2045CT-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 power semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global industrial and computing markets since 1979.
The MBRF20xxCT-Y series targets high-reliability, high-efficiency power conversion in space-constrained applications where low VF, robust surge handling, and certified green materials are mandatory.
FAQ
What is the maximum junction temperature rating for MBRF2045CT-Y?
The MBRF2045CT-Y has a maximum junction temperature (TJ MAX) of +150°C, verified per absolute maximum ratings table. This allows continuous operation at case temperatures up to 127.5°C when dissipating 15W (based on RθJC = 1.5°C/W), making it suitable for sealed industrial enclosures where ambient exceeds 85°C. Derating curves confirm usable current down to 10A at 150°C case temperature.
Does MBRF2045CT-Y support common-cathode dual-diode operation?
Yes, MBRF2045CT-Y integrates two independent Schottky dies sharing a single cathode terminal connected to the center tab. This common-cathode configuration eliminates the need for external cathode tying, reduces parasitic inductance in high-frequency rectification, and simplifies PCB layout for dual-output or interleaved converter designs-confirmed in the device's marking diagram and mechanical outline.
What is the forward voltage specification of MBRF2045CT-Y at full rated current and elevated temperature?
At 20A forward current and 125°C junction temperature, MBRF2045CT-Y exhibits a typical forward voltage of 0.72V, per electrical specifications table. This value is 22% lower than its 25°C counterpart (0.84V), reflecting the negative temperature coefficient of Schottky diodes-a critical factor for thermal stability in sustained high-load operation.
Is MBRF2045CT-Y compliant with halogen-free standards?
Yes, MBRF2045CT-Y is halogen-free in accordance with IEC 61249-2-21, as explicitly stated in the FEATURES section. The molding compound contains no chlorine, bromine, or other regulated halogens, satisfying environmental compliance requirements for consumer electronics and medical devices sold in EU, Japan, and South Korea markets.
What packaging format is used for MBRF2045CT-Y shipments?
MBRF2045CT-Y is supplied in tubes containing 50 units each, consistent with the ORDERING INFORMATION section. Each tube is marked with the part number, date code (YWW format), factory code (F), and green compound indicator (G), enabling full traceability and alignment with J-STD-002 solderability requirements for automated assembly processes.
MBRF2045CT-Y Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-220-3 Full Pack, Isolated Tab
- 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:
- 850 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:
- ITO-220AB
MBRF2045CT-Y FAQ
1.How can I place an order for MBRF2045CT-Y through Aetrix?
Please submit a Request for Quotation (RFQ) for MBRF2045CT-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 MBRF2045CT-Y reliable?
The price and inventory of MBRF2045CT-Y are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBRF2045CT-Y is usually 5 days.
3.What payment methods are accepted for MBRF2045CT-Y?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBRF2045CT-Y transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBRF2045CT-Y?
MBRF2045CT-Y orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBRF2045CT-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 MBRF2045CT-Y?
For technical support, including MBRF2045CT-Y datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBRF2045CT-Y requirements.
6.How does Aetrix verify that MBRF2045CT-Y is sourced from the original manufacturer or authorized distributors?
All MBRF2045CT-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 MBRF2045CT-Y meets industry standards.
7.What is the process for return or replacement of MBRF2045CT-Y?
All MBRF2045CT-Y units undergo pre-shipment inspection (PSI). If there is an issue with MBRF2045CT-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 MBRF2045CT-Y part is unused and in its original packaging.
Return procedure for MBRF2045CT-Y:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MBRF2045CT-Y Tags
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