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Taiwan Semiconductor Corporation MBRF735
- Part No.:
- MBRF735
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-220-2 Full Pack
- Datasheet:
-
MBRF735.pdf
- Description:
- 7.5A, 35V, PLANAR SCHOTTKY
- Quantity:
- Payment:
- Shipping:
Inventory:7,520
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Product details
Overview
MBRF735 from Taiwan Semiconductor is a 7.5A, 35V Schottky barrier rectifier in ITO-220AC package, featuring low forward voltage (0.57V at 7.5A/125°C), 150A surge capability, and AEC-Q101 qualification option. It serves as a high-efficiency output rectifier in automotive-grade DC-DC converters and industrial SMPS.
For engineers reviewing the MBRF735 datasheet, MBRF735 pinout, MBRF735 application, or MBRF735 equivalent, key selection criteria include its 35V VRRM rating, 7.5A continuous forward current, thermal resistance of 7°C/W, and ITO-220AC mechanical compatibility with heatsink mounting.
Technical Context
The MBRF735 uses a single-die Schottky junction optimized for low conduction loss and fast switching in unidirectional DC output stages. Its 35V reverse blocking rating targets 12V–24V system rails where low VF minimizes power dissipation under high load.
Thermal performance is defined by a 7°C/W junction-to-case resistance and 150°C maximum junction temperature, enabling operation up to 7.5A at 125°C case temperature when properly heatsinked per ITO-220AC mounting torque limits (0.56 N·m max).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 35 V - Maximum repetitive reverse voltage; sets safe operating limit for 12V/24V bus applications |
| IF | 7.5 A - Continuous forward current; defines steady-state output capacity at TA ≤ 75°C with heatsink |
| IFSM | 150 A - Non-repetitive surge current (8.3 ms half-sine); supports cold-start and transient overload events |
| VF @ 7.5A/125°C | 0.57 V - Forward voltage drop; determines conduction loss (≈4.3 W at full load) |
| RθJC | 7 °C/W - Junction-to-case thermal resistance; enables thermal design using standard ITO-220AC heatsink interfaces |
| IR @ 35V/125°C | 15 mA - Reverse leakage current; impacts standby power in high-temperature environments |
Pinout & Package
Package: ITO-220AC - Insulated through-hole package with copper leadframe, matte tin-plated leads (J-STD-002 compliant), UL 94V-0 molding compound, and polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Tab) | High-current input terminal | Electrically connected to metal tab; requires insulated mounting when used as cathode-referenced device |
| Cathode (Lead) | Output/return terminal | Single lead opposite tab; carries full forward current; solderable per J-STD-002 |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified version available | Validated for automotive under-hood temperature cycling, vibration, and reliability stress testing |
| Guard ring structure | Prevents edge breakdown at rated VRRM, improving robustness against voltage transients |
| Low VF at high temperature | 0.57 V at 7.5A/125°C enables stable efficiency in thermally constrained enclosures |
| UL Recognized (E-326243) | Meets safety requirements for end-equipment certification in power supplies and adapters |
Applications
| Automotive DC-DC Converter | Industrial SMPS Output Stage |
|---|---|
Use Scenario: 12V-to-5V/3.3V buck converter in engine control unit (ECU) with ambient up to 125°C. IC Role / Device Role / Timing Role: Output rectifier replacing fast recovery diode to reduce conduction loss and improve thermal margin. Use Value: 0.57V VF at 125°C lowers power dissipation by ~35% vs. comparable Si diode, extending ECU lifetime. | Use Scenario: 48V-input telecom power supply delivering 12V/10A to base station subsystems. IC Role / Device Role / Timing Role: Secondary-side synchronous rectification alternative where gate drive complexity is avoided. Use Value: 150A IFSM withstands inrush during hot-swap events without derating or parallel devices. |
| USB-C PD Adapter | LED Driver Power Stage |
Use Scenario: Compact 65W USB-C power adapter with high-density planar transformer and GaN primary. IC Role / Device Role / Timing Role: High-frequency output rectifier operating at 100–300 kHz switching frequency. Use Value: Low junction capacitance and fast recovery eliminate ringing, reducing EMI filter burden. | Use Scenario: Constant-current LED driver for street lighting with 24V/36V battery backup. IC Role / Device Role / Timing Role: Freewheeling path during PWM dimming intervals in buck-based topology. Use Value: Guard ring ensures reliability under repeated 150A surge pulses during LED short-circuit protection activation. |
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-75SQ030 | Same ITO-220AC package, 30V VRRM, 75A IFSM, VF = 0.49V @ 7.5A/25°C | Lower VRRM limits use to ≤15V systems; higher IFSM suits larger surges | Select for 12V rail designs prioritizing lowest VF at room temperature |
| ON Semiconductor MBR735CT | TO-220AB dual common-cathode configuration, 35V VRRM, 7.5A IF per die, VF = 0.59V @ 7.5A/125°C | Dual-diode layout supports center-tapped or dual-output topologies | Select when dual independent outputs or shared-cathode architecture is required |
Compared with VS-75SQ030 and MBR735CT, the MBRF735 offers tighter VRRM matching for 24V nominal systems, superior high-temperature VF stability, and single-die simplicity for cost-sensitive single-rail outputs.
Availability
MBRF735 is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial SMPS, and USB-C PD adapters requiring stable component supply with AEC-Q101 qualification path and ITO-220AC mechanical compatibility.
Supply support for MBRF735 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 automotive, industrial, and consumer markets since 1979.
The MBRF7xx series targets high-reliability power conversion with emphasis on thermal robustness, surge resilience, and automotive qualification-designed specifically for demanding 12V–48V system-level rectification.
FAQ
What is the maximum junction temperature rating for MBRF735?
The MBRF735 has a maximum junction temperature (TJ MAX) of +150°C, verified per absolute maximum ratings table. This allows sustained operation at 7.5A forward current when case temperature is maintained ≤125°C via proper heatsinking. The 7°C/W RθJC value enables accurate thermal modeling for PCB layout and enclosure design in the MBRF735 application.
Is MBRF735 pin-compatible with other ITO-220AC rectifiers?
Yes, the MBRF735 uses the standard ITO-220AC footprint with anode-tab/cathode-lead pinout, matching industry-standard mechanical dimensions and mounting hole positions. This ensures direct replacement in existing layouts designed for ITO-220AC Schottky or fast recovery rectifiers, provided voltage and current ratings align. Always verify thermal interface and polarity marking for the MBRF735 installation.
Does MBRF735 meet automotive qualification standards?
The MBRF735 is offered in an AEC-Q101 qualified version (marked as MBRF735H), validated for temperature cycling, humidity, mechanical shock, and ESD per automotive reliability test plan. While the base MBRF735 is not automatically qualified, the H-suffix variant provides full compliance documentation and traceability required for Tier 1 automotive power modules using the MBRF735.
What is the forward voltage of MBRF735 at elevated temperature?
At 7.5A and 125°C junction temperature, the MBRF735 exhibits a typical forward voltage (VF) of 0.57V, as specified in the electrical characteristics table. This value is critical for thermal design because it directly determines conduction loss (P = IF × VF). The MBRF735 maintains lower VF drift versus temperature than silicon PN diodes, improving efficiency stability across operating range.
How does the guard ring feature benefit MBRF735 in real-world use?
The guard ring in the MBRF735 prevents premature edge breakdown under high dv/dt or voltage overshoot conditions, increasing ruggedness in noisy switching environments. With a rated critical rate of rise of off-state voltage (dv/dt) of 10,000 V/µs, this structure ensures reliable operation during MOSFET/GaN switch turn-off transients. It directly enhances field reliability of the MBRF735 in SMPS and motor drive freewheeling paths.
MBRF735 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):
- 35 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 @ 35 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- ITO-220AC
- Operating Temperature - Junction:
- -55°C ~ 150°C
MBRF735 FAQ
1.How can I place an order for MBRF735 through Aetrix?
Please submit a Request for Quotation (RFQ) for MBRF735 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 MBRF735 reliable?
The price and inventory of MBRF735 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBRF735 is usually 5 days.
3.What payment methods are accepted for MBRF735?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBRF735 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBRF735?
MBRF735 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBRF735 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 MBRF735?
For technical support, including MBRF735 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBRF735 requirements.
6.How does Aetrix verify that MBRF735 is sourced from the original manufacturer or authorized distributors?
All MBRF735 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 MBRF735 meets industry standards.
7.What is the process for return or replacement of MBRF735?
All MBRF735 units undergo pre-shipment inspection (PSI). If there is an issue with MBRF735, 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 MBRF735 part is unused and in its original packaging.
Return procedure for MBRF735:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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