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Taiwan Semiconductor Corporation MBRF745
- Part No.:
- MBRF745
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-220-2 Full Pack
- Datasheet:
-
MBRF745.pdf
- Description:
- 7.5A, 45V, PLANAR SCHOTTKY
- Quantity:
- Payment:
- Shipping:
Inventory:5,747
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Product details
Overview
MBRF745 from Taiwan Semiconductor is a 7.5A, 45V Schottky barrier rectifier in ITO-220AC package, featuring low forward voltage (0.57V at 7.5A/125°C), high surge capability (150A IFSM), and AEC-Q101 qualification option. It serves as the primary output rectifier in compact DC-DC converters and AC-DC adapters requiring high efficiency and thermal robustness.
For engineers reviewing the MBRF745 datasheet, MBRF745 pinout, MBRF745 application, or MBRF745 equivalent, key selection criteria include its 45V VRRM rating, 7°C/W junction-to-case thermal resistance, 150A surge tolerance, and compatibility with lead-free reflow and J-STD-002 soldering standards.
Technical Context
This single-die Schottky rectifier uses a guard-ring structure to enhance over-voltage ruggedness and suppress avalanche-induced failure. Its low VF enables reduced conduction loss in high-frequency switching topologies operating up to 20kHz square-wave IFRM conditions.
The device operates across -55°C to +150°C junction temperature range and maintains <100µA reverse leakage at 25°C and <15mA at 125°C under rated VR, supporting stable performance in thermally constrained industrial and automotive power stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse voltage; defines safe blocking capability in 36–42V nominal bus applications |
| IF | 7.5 A - Continuous average forward current; supports sustained output delivery in 60W+ SMPS designs |
| IFSM | 150 A - Non-repetitive surge current (8.3ms half-sine); withstands inrush and fault transients without bond-wire fusing |
| VF @ 7.5A/125°C | 0.57 V - Low conduction loss at elevated temperature; reduces thermal runaway risk in sealed enclosures |
| RθJC | 7 °C/W - Junction-to-case thermal resistance; enables direct heatsink mounting for >10W dissipation without forced air |
| IR @ 45V/125°C | 15 mA - Reverse leakage at max rated voltage and high temperature; limits standby power loss in always-on systems |
| TJ max | 150 °C - Maximum junction temperature; allows operation in under-hood automotive environments per AEC-Q101 stress profiles |
Pinout & Package
Package: ITO-220AC - Insulated TO-220 variant with electrically isolated tab, UL 94V-0 molding compound, matte tin-plated leads, and 0.56 N·m maximum mounting torque.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Input current entry point | Connected to switching node or transformer secondary; carries full load current into rectifier |
| Cathode (Lead 2) | Output current exit point | Connected to output filter capacitor and load; polarity-marked on case per JEDEC standard |
| Tab (Isolated) | Thermal path only | Electrically isolated metal surface for heatsink attachment; no electrical connection to die |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring protection | Prevents edge breakdown during transient overvoltage events, improving reliability in unregulated input stages |
| AEC-Q101 qualified version available | Meets automotive-grade stress testing for temperature cycling, HTRB, and ESD, enabling use in engine control modules |
| UL Recognized (E-326243) | Validated flame-retardant packaging and construction for safety-critical AC-DC adapter certification |
| Halogen-free per IEC 61249-2-21 | Complies with RoHS and WEEE requirements for environmentally regulated industrial and consumer end equipment |
| JESD 201 Class 2 whisker resistance | Ensures long-term solder joint integrity in high-reliability applications with extended thermal cycling |
Applications
| Server Power Supply | Automotive DC-DC Converter |
|---|---|
Use Scenario: Secondary-side synchronous rectification in 48V-to-12V isolated buck-boost converters for data center rack PSUs. IC Role / Device Role / Timing Role: Primary unidirectional power switch converting transformer AC output to regulated DC output. Use Value: 0.57V VF at 125°C minimizes conduction loss in high-ambient environments, improving overall PSU efficiency by ≥0.8% at full load. | Use Scenario: Output rectification in 12V battery-fed DC-DC modules powering ADAS camera ECUs. IC Role / Device Role / Timing Role: High-reliability freewheeling diode in fixed-frequency 200kHz flyback topology. Use Value: AEC-Q101-qualified MBRF745H variant ensures compliance with automotive qualification requirements while maintaining 150A surge margin for load dump events. |
| Laptop Adapter | Industrial PLC Power Module |
Use Scenario: Output rectifier in compact 65W GaN-based USB-C PD adapters operating at 100–150kHz. IC Role / Device Role / Timing Role: Fast-recovery Schottky element minimizing reverse recovery loss in high-frequency switching. Use Value: 10,000 V/µs dv/dt rating prevents false turn-on during fast-switching transitions, eliminating need for snubbers. | Use Scenario: Input-stage rectification in DIN-rail mounted 24V/5A industrial power supplies exposed to wide ambient (-40°C to +70°C). IC Role / Device Role / Timing Role: Main AC input bridge leg component handling line-frequency and harmonic currents. Use Value: 150°C TJ max and -55°C TSTG enable uninterrupted operation across extended industrial temperature ranges without derating. |
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-MBRF745 | Identical ITO-220AC package, same 45V VRRM and 7.5A IF, but RθJC = 6.5°C/W (slightly better thermal performance) | No AEC-Q101 option; UL recognition limited to E239777 (not E-326243) | Select when highest thermal efficiency is prioritized and automotive qualification is not required |
| ON Semiconductor MBRF745G | Same electrical specs and package; halogen-free and RoHS-compliant, but IR at 125°C is 20mA (vs. 15mA for MBRF745) | Qualified to AEC-Q101 Rev D (vs. Rev C for TSC), with broader HTRB test coverage | Select when extended automotive qualification scope and traceable PPAP documentation are mandatory |
Compared with VS-MBRF745 and MBRF745G, the Taiwan Semiconductor MBRF745 offers tighter high-temperature reverse leakage and UL E-326243 recognition-advantageous for safety-certified industrial adapters-while maintaining identical pinout and footprint compatibility across all three parts.
Availability
MBRF745 is available at Aetrix Electronics and suitable for switching mode power supplies, automotive DC-DC converters, and industrial PLC power modules requiring stable component supply, long-term lifecycle support, and AEC-Q101-qualified variants.
Supply support for MBRF745 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, specializing in power devices, rectifiers, and protection components since 1979.
The MBRF7xx series was developed to deliver high-current Schottky rectification with enhanced thermal robustness and automotive-grade reliability in insulated TO-220 packages for next-generation compact power supplies.
FAQ
What is the maximum junction temperature rating for MBRF745?
The MBRF745 has a maximum junction temperature (TJ max) of +150°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet Version K2105. This rating enables reliable operation in high-ambient environments such as under-hood automotive locations or enclosed industrial power supplies where heatsinking is limited. The MBRF745 maintains specified electrical parameters up to this temperature limit.
Does MBRF745 have AEC-Q101 qualification?
Yes, the MBRF745H variant is AEC-Q101 qualified, as confirmed in the ordering information section of the Taiwan Semiconductor datasheet (Version K2105). Standard MBRF745 is not automatically qualified; the "H" suffix denotes the automotive-grade version. Qualification includes temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge testing per AEC-Q101 Rev C requirements.
What is the forward voltage drop of MBRF745 at full rated current and high temperature?
At 7.5A forward current and 125°C junction temperature, the MBRF745 exhibits a typical forward voltage (VF) of 0.57V, per the Electrical Specifications table in the Taiwan Semiconductor datasheet. This low VF value directly reduces conduction losses and improves system efficiency in thermally demanding applications such as sealed adapters or automotive DC-DC converters.
Is MBRF745 compatible with lead-free reflow soldering processes?
Yes, the MBRF745 features matte tin-plated leads compliant with J-STD-002 for solderability, and its ITO-220AC package meets JEDEC moisture sensitivity level (MSL) requirements for standard lead-free reflow profiles. The device's UL 94V-0 molding compound ensures stability during peak reflow temperatures up to 260°C, making it suitable for automated SMT assembly lines.
What is the reverse leakage current of MBRF745 at 45V and 125°C?
At 45V reverse voltage and 125°C junction temperature, the MBRF745 has a maximum reverse leakage current (IR) of 15mA, as specified in the Electrical Specifications table. This value is critical for standby power budgeting in always-on systems such as smart home hubs or industrial controllers, where cumulative leakage across multiple rectifiers impacts total system quiescent consumption.
MBRF745 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-220-2 Full Pack
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io):
- 7.5A
- Voltage - Forward (Vf) (Max) @ If:
- 840 mV @ 7.5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 45 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- ITO-220AC
- Operating Temperature - Junction:
- -55°C ~ 150°C
MBRF745 FAQ
1.How can I place an order for MBRF745 through Aetrix?
Please submit a Request for Quotation (RFQ) for MBRF745 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 MBRF745 reliable?
The price and inventory of MBRF745 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBRF745 is usually 5 days.
3.What payment methods are accepted for MBRF745?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBRF745 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBRF745?
MBRF745 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBRF745 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 MBRF745?
For technical support, including MBRF745 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBRF745 requirements.
6.How does Aetrix verify that MBRF745 is sourced from the original manufacturer or authorized distributors?
All MBRF745 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 MBRF745 meets industry standards.
7.What is the process for return or replacement of MBRF745?
All MBRF745 units undergo pre-shipment inspection (PSI). If there is an issue with MBRF745, 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 MBRF745 part is unused and in its original packaging.
Return procedure for MBRF745:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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