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Taiwan Semiconductor Corporation MBR3045CT-Y
- Part No.:
- MBR3045CT-Y
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
MBR3045CT-Y.pdf
- Description:
- DIODE ARR SCHOTT 45V 30A TO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,156
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Product details
Overview
MBR3045CT-Y from Taiwan Semiconductor is a 30A, 45V dual-die Schottky barrier rectifier in TO-220AB package, featuring 0.70V max forward voltage at 15A/25°C, 200A surge capability, and guard-ring overvoltage protection. It delivers low conduction loss and high efficiency in high-frequency DC–DC converters and switching power supplies.
For engineers reviewing the MBR3045CT-Y datasheet, MBR3045CT-Y pinout, MBR3045CT-Y application, or MBR3045CT-Y equivalent, key selection criteria include its 45V VRRM, dual-common-cathode configuration, thermal resistance of 1.0°C/W (junction-to-case), and RoHS/halogen-free compliance for industrial-grade SMPS designs.
Technical Context
This device integrates two independent Schottky diodes in a single TO-220AB package with common cathode connection, enabling full-wave rectification or dual-channel output paths. Its guard ring structure enhances ruggedness against transient overvoltage events, while the 1.0°C/W RθJC supports sustained 30A operation under forced-air or heatsink-cooled conditions.
The MBR3045CT-Y operates across –55°C to +150°C junction temperature range and exhibits 200µA max reverse leakage at 25°C and 40mA at 125°C - critical for thermal stability in compact, high-density power stages where leakage-induced heating must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in 48V-input SMPS front-end rectification |
| IF | 30 A - Continuous average forward current per diode; enables high-power output without parallel devices |
| IFSM | 200 A - Non-repetitive surge rating (8.3ms half-sine); withstands inrush and fault transients in AC/DC adapters |
| VF @ 15A, 25°C | ≤0.70 V - Low forward drop reduces conduction loss and improves system efficiency above 90% in 12V/24V DC–DC stages |
| RθJC | 1.0 °C/W - Junction-to-case thermal resistance; allows direct heatsink mounting with ≤30°C temperature rise at full load |
| TJ max | +150 °C - Maximum junction temperature; supports operation in sealed enclosures or high-ambient industrial environments |
| IR @ 25°C | ≤200 µA - Reverse leakage per diode; minimizes standby power loss in always-on power rails |
Pinout & Package
Package: TO-220AB, 3-terminal, dual-diode common-cathode configuration. Matte tin-plated leads, UL 94V-0 molding compound, polarity marked on case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode 1) | Anode of first Schottky diode | Input terminal for first rectification path; electrically isolated from Pin 2 |
| Pin 2 (Cathode) | Common cathode node | Shared output node for both diodes; connects directly to heatsink tab and PCB ground plane |
| Pin 3 (Anode 2) | Anode of second Schottky diode | Input terminal for second rectification path; symmetrical to Pin 1 for balanced dual-channel use |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring overvoltage protection | Enhances avalanche ruggedness and prevents premature breakdown during line transients in offline SMPS |
| Low 0.70V VF @ 15A/25°C | Reduces conduction loss by >30% vs. comparable fast recovery diodes, lowering thermal stress in high-current rails |
| Dual-die common-cathode layout | Enables compact full-wave rectification or independent dual-output DC–DC post-regulation without extra components |
| RoHS and halogen-free compliance | Meets IEC 61249-2-21; supports environmentally regulated industrial and telecom equipment certifications |
| 1.0°C/W RθJC | Permits direct thermal coupling to heatsink; eliminates need for thermal interface material in many medium-power applications |
Applications
| Server Power Supply Rectification | Industrial DC–DC Converter Output Stage |
|---|---|
Use Scenario: High-efficiency 48V input to 12V/5V conversion in 1U server PSUs with tight thermal constraints. IC Role / Device Role / Timing Role: Dual-anode Schottky rectifier providing synchronous full-wave output rectification. Use Value: 0.70V forward drop at 15A reduces conduction loss by ~1.5W per diode versus standard FRDs, improving overall PSU efficiency to >94%. | Use Scenario: Isolated 24V-to-5V/3.3V DC–DC module powering PLC I/O and sensor interfaces. IC Role / Device Role / Timing Role: Secondary-side common-cathode rectifier delivering dual regulated outputs from center-tapped transformer. Use Value: Dual-die integration eliminates discrete diode pairing, reducing BOM count and PCB footprint by 40%. |
| Laptop Adapter Front-End | Telecom Shelf Power Distribution |
Use Scenario: Universal-input (90–264VAC) adapter with active PFC and LLC resonant stage feeding 19.5V output. IC Role / Device Role / Timing Role: Output rectifier handling 30A continuous load with 200A surge tolerance during cold start. Use Value: 200A IFSM withstands repeated inrush surges without degradation, extending adapter field life beyond 50,000 cycles. | Use Scenario: -48V DC distribution board supplying redundant 12V rails to base station radios and fan controllers. IC Role / Device Role / Timing Role: High-reliability secondary rectifier operating continuously at 65°C ambient with derated 25A load. Use Value: 150°C TJ max and 1.0°C/W RθJC enable stable operation without forced airflow, reducing system fan noise and failure risk. |
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-30CPH045 | Same 45V VRRM, 30A IF, but TO-247 package; RθJC = 0.9°C/W; VF = 0.69V @ 15A | Larger footprint, higher cost; better thermal performance but requires different mounting hardware | Select when thermal margin is critical and PCB space permits TO-247 layout |
| ON Semiconductor MBR3045CT | Identical electrical specs and TO-220AB package; differs only in date code marking (no "-Y" suffix); RoHS compliant but not halogen-free | No functional difference in circuit operation; halogen-free requirement may drive MBR3045CT-Y preference in EU/automotive programs | Select MBR3045CT-Y if halogen-free compliance per IEC 61249-2-21 is mandatory |
Compared with VS-30CPH045 and MBR3045CT, the MBR3045CT-Y offers identical performance in a standard TO-220AB footprint with guaranteed halogen-free construction - making it optimal for cost-sensitive, space-constrained industrial power supplies requiring full regulatory alignment.
Availability
MBR3045CT-Y is available at Aetrix Electronics and suitable for switching mode power supplies, DC–DC converters, and AC/DC adapters requiring stable component supply, long-term lifecycle support, and RoHS/halogen-free compliance.
Supply support for MBR3045CT-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 discrete manufacturer headquartered in Hsinchu, Taiwan, serving global industrial, computing, and telecom markets since 1979.
The MBR3045CT-Y belongs to TSC's high-current Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability secondary-side rectification in compact, thermally demanding power conversion systems.
FAQ
What is the maximum junction temperature rating for the MBR3045CT-Y?
The MBR3045CT-Y has a maximum junction temperature (TJ) rating of +150°C, verified per absolute maximum ratings table. This allows reliable operation in sealed enclosures or high-ambient environments such as industrial motor drives and telecom power shelves. Derating curves confirm usable current capacity down to 15A at 125°C case temperature, ensuring design headroom for thermal transients.
Does the MBR3045CT-Y have a common-cathode or common-anode configuration?
The MBR3045CT-Y uses a dual-diode common-cathode configuration in TO-220AB package, with Pin 1 and Pin 3 as independent anodes and Pin 2 as the shared cathode terminal. This layout is confirmed in the mechanical outline and marking diagram, and enables full-wave rectification or dual-output DC–DC topologies without external wiring changes.
What is the forward voltage specification for MBR3045CT-Y at full rated current?
At 30A and 25°C junction temperature, the MBR3045CT-Y exhibits a maximum forward voltage (VF) of 0.82V per diode. At elevated temperature (125°C), VF drops to 0.73V due to Schottky's negative temperature coefficient - a key advantage for thermal stability in high-load conditions.
Is the MBR3045CT-Y halogen-free and RoHS compliant?
Yes, the MBR3045CT-Y is both RoHS compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the FEATURES section. The molding compound contains no brominated flame retardants or chlorine-based additives, satisfying stringent environmental requirements for EU medical, industrial, and networking equipment.
What is the thermal resistance from junction to case (RθJC) for MBR3045CT-Y?
The junction-to-case thermal resistance (RθJC) for MBR3045CT-Y is 1.0°C/W, measured under standard test conditions per JEDEC JESD51-14. This value applies specifically to the TO-220AB package variant and enables accurate heatsink sizing - for example, a 2.0°C/W heatsink yields a total thermal resistance of 3.0°C/W, limiting junction rise to 90°C at 30A continuous load.
MBR3045CT-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):
- 30A
- Voltage - Forward (Vf) (Max) @ If:
- 820 mV @ 30 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
MBR3045CT-Y FAQ
1.How can I place an order for MBR3045CT-Y through Aetrix?
Please submit a Request for Quotation (RFQ) for MBR3045CT-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 MBR3045CT-Y reliable?
The price and inventory of MBR3045CT-Y are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBR3045CT-Y is usually 5 days.
3.What payment methods are accepted for MBR3045CT-Y?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBR3045CT-Y transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBR3045CT-Y?
MBR3045CT-Y orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBR3045CT-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 MBR3045CT-Y?
For technical support, including MBR3045CT-Y datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBR3045CT-Y requirements.
6.How does Aetrix verify that MBR3045CT-Y is sourced from the original manufacturer or authorized distributors?
All MBR3045CT-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 MBR3045CT-Y meets industry standards.
7.What is the process for return or replacement of MBR3045CT-Y?
All MBR3045CT-Y units undergo pre-shipment inspection (PSI). If there is an issue with MBR3045CT-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 MBR3045CT-Y part is unused and in its original packaging.
Return procedure for MBR3045CT-Y:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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