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Taiwan Semiconductor Corporation MBRF2045CT
- Part No.:
- MBRF2045CT
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-220-3 Full Pack, Isolated Tab
- Datasheet:
-
MBRF2045CT.pdf
- Description:
- DIODE ARR SCHOT 45V 20A ITO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,762
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Product details
Overview
MBRF2045CT from Taiwan Semiconductor is a dual-die, 20A, 45V Schottky barrier rectifier in ITO-220AB package, featuring 0.84V forward voltage at 20A/25°C and 150A surge current capability; used in high-efficiency DC-DC converters and industrial SMPS where low conduction loss and fast switching are critical.
For engineers reviewing the MBRF2045CT datasheet, MBRF2045CT pinout, MBRF2045CT application, or MBRF2045CT equivalent, key selection criteria include repetitive peak reverse voltage (45 V), thermal resistance (1.5 °C/W for ≤60 V variants), junction temperature range (–55 to +150 °C), and AEC-Q101 qualification availability.
Technical Context
This dual-common-cathode Schottky rectifier integrates two independent diode dies in a single ITO-220AB thermally enhanced package, enabling synchronous or interleaved operation in center-tapped or full-wave bridge configurations. Its guard ring structure provides overvoltage protection, and it meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance requirements.
The device operates across –55°C to +150°C junction temperature, with 10,000 V/µs critical dv/dt rating ensuring robustness against voltage transients. Reverse leakage remains ≤100 µA at 25°C and ≤15 mA at 125°C under rated 45 V reverse bias, supporting stable performance in thermally demanding power stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse blocking voltage per diode; defines safe operating limit in DC-DC output rectification. |
| IF(AV) | 20 A - Average forward current per diode; supports continuous 20 A conduction without derating at TC = 75°C. |
| VF @ 20A, 25°C | 0.84 V - Low forward drop reduces conduction loss by ~30% vs. comparable Si PN rectifiers, improving system efficiency. |
| IFSM | 150 A - Non-repetitive surge current handling for 8.3 ms half-sine; withstands inrush and fault transients in power supplies. |
| RθJC | 1.5 °C/W - Junction-to-case thermal resistance (for ≤60 V variants); enables direct heatsink mounting with predictable thermal rise. |
| IR @ 45V, 25°C | ≤100 µA - Low reverse leakage minimizes standby power loss and improves light-load regulation. |
| TJ Range | –55 to +150 °C - Wide operating junction temperature range supports deployment in automotive under-hood and industrial environments. |
Pinout & Package
Package: ITO-220AB - Thermally optimized 3-lead molded plastic package with isolated metal tab (cathode-connected), matte tin-plated leads, UL 94V-0 rated compound, and 0.56 N·m maximum mounting torque.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 (Anode 1) | Anode of Diode 1 | Input terminal for first rectifying path; electrically isolated from other leads except via internal die. |
| Lead 2 (Anode 2) | Anode of Diode 2 | Input terminal for second rectifying path; enables dual-channel or center-tapped transformer interface. |
| Tab / Lead 3 (Cathode) | Common Cathode | Shared cathode connection; mounted to heatsink for thermal management and serves as circuit return node. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Enhances ruggedness against transient overvoltage events without external snubbers in SMPS flyback outputs. |
| AEC-Q101 qualified option | Available as MBRF2045CTH - validated for automotive power modules requiring reliability under temperature cycling and vibration stress. |
| Low VF at high IF | 0.72 V @ 20A/125°C - maintains low conduction loss even at elevated temperatures, reducing thermal runaway risk. |
| Halogen-free construction | Complies with IEC 61249-2-21 - satisfies environmental compliance mandates for industrial and consumer electronics manufacturing. |
| UL Recognized | File # E-326243 - certifies material flammability and electrical safety for end-equipment regulatory approval. |
Applications
| Server Power Supply Rectification | Industrial DC-DC Converter Output Stage |
|---|---|
Use Scenario: High-density 48 V input to 12 V/20 A output DC-DC module in telecom server racks. IC Role / Device Role / Timing Role: Dual-anode Schottky rectifier performing synchronous rectification in center-tapped topology. Use Value: 0.84 V VF at 20 A lowers conduction loss by >1.5 W per diode vs. Si alternatives, directly improving power density and thermal margin. | Use Scenario: 24 V input to 5 V/20 A isolated converter in programmable logic controller (PLC) power stage. IC Role / Device Role / Timing Role: Common-cathode dual rectifier delivering regulated output with minimal ripple and fast transient recovery. Use Value: 150 A IFSM rating handles motor startup surges without derating; 1.5 °C/W RθJC enables passive heatsinking in sealed enclosures. |
| Automotive On-Board Charger (OBC) Auxiliary Supply | LED Driver Secondary-Side Rectification |
Use Scenario: 400 V DC bus-derived 12 V auxiliary supply in EV on-board chargers. IC Role / Device Role / Timing Role: Output rectifier in flyback converter powering control circuitry and gate drivers. Use Value: AEC-Q101-qualified variant (MBRF2045CTH) ensures reliability across –40°C to +125°C ambient with validated lifetime under thermal cycling. | Use Scenario: Constant-current LED driver for street lighting with 36 V output and 20 A load. IC Role / Device Role / Timing Role: Low-loss secondary-side rectifier minimizing heat generation near sensitive optical components. Use Value: ≤100 µA IR at 25°C prevents standby current drift; 0.57 V VF @ 10A/125°C sustains efficiency during enclosure temperature rise. |
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-20BQ045PbF | Same 45 V VRRM, 20 A IF, ITO-220AC package; VF = 0.72 V @ 20A/25°C (lower), RθJC = 2.0 °C/W (higher). | Higher thermal resistance requires larger heatsink area; Pb-free but not AEC-Q101 qualified. | Select when lower forward drop is prioritized over automotive qualification and thermal footprint. |
| ON Semiconductor MBR2045CT | Identical electrical specs and ITO-220AB package; VF = 0.85 V @ 20A/25°C (slightly higher); RoHS-compliant, no AEC-Q101 option. | No automotive-grade variant available; same pinout and mounting but different marking and traceability. | Choose for cost-sensitive industrial designs where AEC-Q101 is not required and minor VF trade-off is acceptable. |
Compared with MBRF2045CT, VS-20BQ045PbF offers lower conduction loss but demands greater thermal design margin, while MBR2045CT provides identical form-factor compatibility without automotive qualification-making MBRF2045CT optimal where AEC-Q101 readiness or tighter thermal resistance is mandatory.
Availability
MBRF2045CT is available at Aetrix Electronics and suitable for switching mode power supplies, DC-DC converters, and industrial adapters requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MBRF2045CT 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 industrial, computing, and automotive markets since 1979.
The MBRF20xxCT series targets high-efficiency power conversion systems requiring low-loss, thermally robust Schottky rectification-designed specifically for space-constrained, high-reliability SMPS and adapter applications.
FAQ
What is the maximum junction temperature rating for MBRF2045CT?
The MBRF2045CT has a maximum junction temperature (TJ MAX) of +150°C and a minimum of –55°C. This wide operating range allows reliable use in under-hood automotive auxiliary supplies and industrial power modules exposed to elevated ambient temperatures. The device's thermal performance is validated up to this limit, with RθJC = 1.5 °C/W ensuring predictable heat dissipation when mounted to an appropriate heatsink. Derating curves in the official datasheet define safe current limits above 75°C case temperature.
Does MBRF2045CT support automotive applications?
Yes-MBRF2045CT is available in an AEC-Q101 qualified version designated MBRF2045CTH. This variant undergoes rigorous stress testing including temperature cycling, mechanical shock, and humidity bias life validation per AEC-Q101 standards. While the base MBRF2045CT is suitable for industrial use, only the 'H' suffix part is certified for automotive power systems such as on-board chargers and body control modules where reliability under harsh conditions is mandated.
What is the forward voltage of MBRF2045CT at 20 A and 125°C?
The forward voltage of MBRF2045CT is 0.72 V at 20 A and TJ = 125°C. This value is specified in the Electrical Specifications table under "Forward voltage per diode" with conditions IF = 20 A and TJ = 125°C. It reflects stable conduction performance at elevated junction temperatures, critical for maintaining efficiency in thermally constrained designs like enclosed LED drivers or compact AC-DC adapters where ambient temperature rises significantly during operation.
Is MBRF2045CT pin-compatible with other parts in the MBRF20xxCT family?
Yes-MBRF2045CT shares identical ITO-220AB package dimensions, lead frame layout, and pin configuration (dual anodes, common cathode tab) with all members of the MBRF20xxCT series (e.g., MBRF2035CT, MBRF2060CT). Voltage ratings differ across the family, but mechanical mounting, PCB footprint, and thermal interface remain fully interchangeable. This enables design flexibility and BOM consolidation across varying reverse voltage requirements without layout changes.
What packaging and ordering options are available for MBRF2045CT?
MBRF2045CT is supplied in tubes containing 50 units per tube. The standard ordering code is MBRF2045CT; the AEC-Q101 qualified version uses the code MBRF2045CTH. Both versions use the ITO-220AB package with matte tin-plated leads compliant with J-STD-002 solderability requirements. Tape-and-reel packaging is not offered for this part-only tube packaging is supported per Taiwan Semiconductor's ordering information documentation.
MBRF2045CT 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:
- 840 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 FAQ
1.How can I place an order for MBRF2045CT through Aetrix?
Please submit a Request for Quotation (RFQ) for MBRF2045CT 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 reliable?
The price and inventory of MBRF2045CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBRF2045CT is usually 5 days.
3.What payment methods are accepted for MBRF2045CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBRF2045CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBRF2045CT?
MBRF2045CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBRF2045CT 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?
For technical support, including MBRF2045CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBRF2045CT requirements.
6.How does Aetrix verify that MBRF2045CT is sourced from the original manufacturer or authorized distributors?
All MBRF2045CT 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 meets industry standards.
7.What is the process for return or replacement of MBRF2045CT?
All MBRF2045CT units undergo pre-shipment inspection (PSI). If there is an issue with MBRF2045CT, 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 part is unused and in its original packaging.
Return procedure for MBRF2045CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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