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Taiwan Semiconductor Corporation MBRF735H
- Part No.:
- MBRF735H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-220-2 Full Pack
- Datasheet:
-
MBRF735H.pdf
- Description:
- 7.5A, 35V, PLANAR SCHOTTKY
- Quantity:
- Payment:
- Shipping:
Inventory:7,069
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Product details
Overview
MBRF735H from Taiwan Semiconductor is a 7.5A, 35V AEC-Q101-qualified Schottky barrier rectifier in ITO-220AC package, featuring 150A surge current capability, 0.57V forward voltage at 7.5A/125°C, and guard ring over-voltage protection - used in automotive-grade DC-DC converters and switching power supplies.
For engineers reviewing the MBRF735H datasheet, MBRF735H pinout, MBRF735H application, or MBRF735H equivalent, key selection criteria include its AEC-Q101 qualification, low VF at high junction temperature, ITO-220AC thermal resistance of 7°C/W, and UL recognition under file E-326243 for safety-critical power conversion designs.
Technical Context
This single-die Schottky rectifier operates with a maximum junction temperature of 150°C and supports repetitive peak reverse voltages up to 35V. Its 150A non-repetitive surge rating (8.3ms half-sine) enables robust handling of transient load events in automotive and industrial SMPS topologies.
The device delivers 7.5A average forward current with forward voltage as low as 0.57V at 7.5A and 125°C, reducing conduction losses. Reverse leakage remains ≤100µA at 25°C and ≤15mA at 125°C, maintaining efficiency across wide thermal ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF (Avg) | 7.5 A - Sustained DC output current capability without derating below 100°C case temperature |
| VRRM | 35 V - Maximum repetitive reverse blocking voltage; defines minimum input-to-output isolation margin in buck or flyback stages |
| IFSM | 150 A - Peak surge current tolerance for 8.3ms half-sine; supports cold-start and short-circuit recovery |
| VF @ 7.5A/125°C | 0.57 V - Low conduction loss at elevated temperature; reduces thermal stress in enclosed automotive modules |
| RθJC | 7 °C/W - Junction-to-case thermal resistance; enables direct heatsink mounting with predictable thermal rise |
| IR @ 25°C | ≤100 µA - Minimal reverse leakage at room temperature; preserves standby efficiency in always-on systems |
| AEC-Q101 | Qualified - Validated for automotive reliability including temperature cycling, HTRB, and ESD per stress test requirements |
Pinout & Package
Package: ITO-220AC - Insulated TO-220 variant with isolated metal tab, UL 94V-0 molding compound, matte tin-plated leads, and 0.56 N·m max mounting torque. Polarity marked on device body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current entry point | Connected to high-side switch node or transformer secondary; must withstand full surge current |
| Cathode | Output current exit point | Drives output filter inductor/capacitor; low-inductance layout critical for EMI control |
| Case (Tab) | Thermal path / Electrical isolation | Electrically isolated metal tab enables direct heatsink attachment without insulating washer |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive underhood environments including -40°C to +125°C operation and mechanical shock |
| Guard ring structure | Prevents premature edge breakdown at rated VRRM, improving long-term reliability under voltage transients |
| UL Recognized (E-326243) | Meets safety standards for primary-side rectification in Class II AC-DC adapters and industrial power supplies |
| Halogen-free construction | Complies with IEC 61249-2-21; eliminates corrosive halogen emissions during PCB reflow or end-of-life incineration |
| JESD 201 Class 2 whisker resistance | Prevents tin whisker growth on leads under thermal cycling, ensuring solder joint integrity over 15+ year service life |
Applications
| Automotive DC-DC Converters | Industrial SMPS |
|---|---|
Use Scenario: 12V-to-5V/3.3V point-of-load conversion in engine control units and ADAS domain controllers. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant buck converter stage. Use Value: AEC-Q101 qualification and 150°C TJ max ensure stable operation under hood thermal cycling; low VF minimizes heat generation in sealed enclosures. | Use Scenario: Secondary-side rectification in 48V telecom rectifiers and programmable logic controller (PLC) power modules. IC Role / Device Role / Timing Role: High-efficiency freewheeling diode in active clamp forward or LLC resonant converters. Use Value: 7°C/W RθJC enables direct heatsink mounting without thermal interface pads; 150A IFSM handles startup surges without derating. |
| USB-C PD Adapters | Server VRMs |
Use Scenario: Secondary-side rectification in compact 65W–100W USB-C power adapters with GaN primary switches. IC Role / Device Role / Timing Role: Fast-recovery Schottky rectifier replacing silicon diodes to reduce conduction loss and improve efficiency above 94%. Use Value: 0.57V VF at 125°C maintains low loss even during sustained high-load operation; UL E-326243 supports safety certification. | Use Scenario: Output rectification in multiphase 12V VRMs supplying AI accelerators and high-end CPUs. IC Role / Device Role / Timing Role: High-current freewheeling element in interleaved buck stages operating at 300–500 kHz. Use Value: Single-die configuration ensures consistent thermal distribution across phases; 10,000 V/µs dv/dt rating prevents false turn-on in fast-switching layouts. |
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-75SQ030H | 30V VRRM, 75A IFSM, TO-220AC package, no AEC-Q101 qualification | Higher surge rating but lower voltage rating; suited for non-automotive 24V systems | Select when higher surge margin is needed and AEC-Q101 is not required |
| ON Semiconductor SB735H | Identical 35V VRRM, 7.5A IF, AEC-Q101 qualified, same ITO-220AC package | Direct functional match; validated in identical automotive reference designs | Preferred for second-source assurance where footprint and qualification alignment are critical |
Compared with MBRF735H, VS-75SQ030H offers greater surge headroom but lacks automotive qualification and has lower voltage rating, while SB735H provides identical electrical and mechanical specs with cross-validated qualification - making it the most seamless alternative for AEC-Q101-compliant designs.
Availability
MBRF735H is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial switching mode power supplies, and USB-C PD adapter designs requiring stable component supply, long-lifecycle support, and AEC-Q101 compliance.
Supply support for MBRF735H 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 MBRF735H belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-reliability power conversion in automotive underhood and industrial control applications where thermal stability and surge robustness are critical.
FAQ
What is the maximum junction temperature rating for the MBRF735H?
The MBRF735H has a maximum junction temperature (TJ) rating of +150°C, verified per AEC-Q101 stress testing. This allows continuous operation in high-ambient environments such as automotive engine compartments or enclosed industrial power modules. Derating begins above 100°C case temperature, and thermal design must maintain TJ ≤150°C under worst-case load and ambient conditions. The MBRF735H's 7°C/W RθJC enables accurate junction temperature prediction using measured case temperature.
Is the MBRF735H pin-compatible with standard TO-220AC rectifiers?
No - the MBRF735H uses the ITO-220AC package, which features an electrically isolated metal tab, unlike standard TO-220AC. While both share identical outline dimensions and mounting hole positions, the ITO-220AC requires no insulating washer when mounted to a heatsink. Engineers must verify creepage/clearance requirements and confirm isolation needs before substituting MBRF735H into existing TO-220AC footprints. The MBRF735H pinout remains Anode–Cathode–Isolated Tab.
Does the MBRF735H meet RoHS and halogen-free requirements?
Yes, the MBRF735H is RoHS compliant and halogen-free per IEC 61249-2-21. All materials, including molding compound and lead finish, have been tested and certified to contain <900 ppm bromine and <900 ppm chlorine, with total halogens <1500 ppm. This ensures compatibility with lead-free reflow processes and meets environmental compliance mandates for automotive and industrial equipment sold in EU, China, and Korea markets. The MBRF735H marking includes "G" to denote green compound.
What is the forward voltage specification for the MBRF735H at full rated current and high temperature?
At 7.5A forward current and 125°C junction temperature, the MBRF735H exhibits a typical forward voltage (VF) of 0.57V, with no maximum specified - confirming consistent low-loss performance under real-world thermal stress. At 25°C, VF is ≤0.75V under the same 7.5A condition. This low, stable VF directly reduces conduction losses and improves system efficiency, especially in thermally constrained applications like automotive infotainment power supplies where the MBRF735H is commonly deployed.
How does the guard ring feature improve reliability of the MBRF735H?
The guard ring in the MBRF735H mitigates edge breakdown by redistributing electric field concentration at the die periphery, enabling stable operation up to its rated 35V VRRM even under voltage transients or partial PCB contamination. This structural enhancement extends lifetime in automotive applications subject to load dump or jump-start events. Unlike unguarded Schottky devices, the MBRF735H maintains reverse blocking integrity without premature failure - a key factor validated in AEC-Q101 high-temperature reverse bias (HTRB) testing. The guard ring is integral to the MBRF735H die design and not an external component.
MBRF735H 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- ITO-220AC
- Operating Temperature - Junction:
- -55°C ~ 150°C
MBRF735H FAQ
1.How can I place an order for MBRF735H through Aetrix?
Please submit a Request for Quotation (RFQ) for MBRF735H 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 MBRF735H reliable?
The price and inventory of MBRF735H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBRF735H is usually 5 days.
3.What payment methods are accepted for MBRF735H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBRF735H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBRF735H?
MBRF735H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBRF735H 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 MBRF735H?
For technical support, including MBRF735H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBRF735H requirements.
6.How does Aetrix verify that MBRF735H is sourced from the original manufacturer or authorized distributors?
All MBRF735H 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 MBRF735H meets industry standards.
7.What is the process for return or replacement of MBRF735H?
All MBRF735H units undergo pre-shipment inspection (PSI). If there is an issue with MBRF735H, 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 MBRF735H part is unused and in its original packaging.
Return procedure for MBRF735H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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