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Taiwan Semiconductor Corporation MBR735H
- Part No.:
- MBR735H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-220-2
- Datasheet:
-
MBR735H.pdf
- Description:
- 7.5A, 35V, PLANAR SCHOTTKY
- Quantity:
- Payment:
- Shipping:
Inventory:7,159
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Product details
Overview
MBR735H from Taiwan Semiconductor is a 7.5A, 35V AEC-Q101-qualified Schottky barrier rectifier in TO-220AC package, featuring low forward voltage (0.57V @ 7.5A, 125°C), 150A surge capability, and guard ring overvoltage protection-used in automotive-grade DC/DC converters and SMPS secondary-side rectification.
For engineers reviewing the MBR735H datasheet, MBR735H pinout, MBR735H application, or MBR735H equivalent, key selection criteria include TJ max = 150°C, RθJC = 5°C/W, VRRM = 35V, IF = 7.5A continuous, and AEC-Q101 qualification for under-hood power conversion designs.
Technical Context
This single-die Schottky rectifier operates with zero recovery charge and minimal switching loss, enabling high-frequency operation up to 20 kHz. Its 35V VRRM rating and 150A IFSM support robust transient handling in 12V automotive systems.
The device uses matte tin-plated leads compliant with J-STD-002, mounted with ≤0.56 N·m torque, and meets JESD201 Class 2 whisker resistance-critical for long-term reliability in thermally cycled environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 35 V - Maximum reverse blocking voltage for 12V system input rectification |
| IF | 7.5 A - Continuous forward current at TA = 25°C, derates to ~4.5A at TC = 100°C |
| IFSM | 150 A - Non-repetitive surge current handling for load dump or cold-crank transients |
| VF @ 7.5A, 125°C | 0.57 V - Low conduction loss enabling >92% efficiency in 5–12V output DC/DC stages |
| TJ max | 150 °C - Junction temperature limit supporting under-hood operation without forced cooling |
| RθJC | 5 °C/W - Thermal resistance from junction to case, enabling direct heatsink mounting |
| IR @ 35V, 125°C | 15 mA - Reverse leakage level defining standby power loss in always-on modules |
Pinout & Package
TO-220AC package: 3-terminal through-hole outline with isolated tab (cathode-connected metal flange), matte tin-plated leads, UL 94V-0 molding compound, and polarity marked on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current terminal | Connected to transformer secondary or switch node; accepts 7.5A continuous forward flow |
| Cathode | Output current terminal | Common connection point for output filter capacitor and load return path |
| Tab (Metal Flange) | Cathode (electrically connected) | Provides mechanical mounting surface and thermal path to heatsink; must be insulated if cathode is not chassis-ground referenced |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS power supplies |
| Guard ring structure | Prevents edge breakdown at rated VRRM, improving long-term reliability under voltage stress |
| Low VF at high temperature | 0.57V @ 7.5A, 125°C enables stable performance across full automotive ambient range |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive for environmentally regulated production |
| JESD201 Class 2 whisker resistance | Ensures solder joint integrity after prolonged thermal cycling in automotive life testing |
Applications
| Automotive DC/DC Converter | Industrial SMPS Secondary Rectifier |
|---|---|
Use Scenario: 12V-to-5V/3.3V buck converter in vehicle infotainment head unit. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier replacement, conducting during low-side MOSFET on-time. Use Value: Reduces conduction loss vs. silicon diode by ~40%, lowering thermal load on PCB and enabling smaller heatsinks. | Use Scenario: Output rectification in 48V telecom power supply with 20kHz switching frequency. IC Role / Device Role / Timing Role: Uncontrolled freewheeling path during transformer reset phase. Use Value: Zero reverse recovery eliminates switching spikes, reducing EMI filtering requirements and layout sensitivity. |
| USB-C PD Adapter Output Stage | LED Driver Power Supply |
Use Scenario: 20V output rectification in compact 65W USB-C PD wall adapter. IC Role / Device Role / Timing Role: Main output rectifier delivering regulated DC to secondary-side controller feedback network. Use Value: 0.57V VF at 125°C maintains regulation margin across full operating temperature range. | Use Scenario: Constant-current LED driver for commercial lighting with 36V string voltage. IC Role / Device Role / Timing Role: Output rectifier in flyback-derived constant-current topology. Use Value: 150A IFSM withstands inrush during cold-start, preventing premature failure in high-volume installations. |
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, AEC-Q101 qualified | Limited to ≤30V systems; lower surge rating reduces margin in load-dump scenarios | Preferred where 30V rating suffices and higher surge margin is not required |
| ON Semiconductor MBR735CT | 35V VRRM, 7.5A IF, TO-220AB (dual common-cathode), no AEC-Q101 | Dual-diode configuration enables center-tapped transformer use; lacks automotive qualification | Used in non-automotive industrial SMPS requiring dual outputs or shared cathode |
Compared with VS-75SQ030H and MBR735CT, the MBR735H uniquely combines 35V VRRM, 150A surge rating, and AEC-Q101 qualification in a single-diode TO-220AC package-making it optimal for automotive 12V rail rectification where voltage margin and transient robustness are critical.
Availability
MBR735H is available at Aetrix Electronics and suitable for automotive power conversion, industrial SMPS design, and USB-C PD adapter development requiring stable component supply and AEC-Q101 compliance.
Supply support for MBR735H 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 global automotive, industrial, and consumer markets since 1979.
The MBR7xxH series targets high-reliability power conversion in harsh environments, with design focus on AEC-Q101-compliant Schottky rectifiers for 12V/24V automotive subsystems and high-efficiency industrial SMPS.
FAQ
What is the maximum junction temperature rating for MBR735H?
The MBR735H has a maximum junction temperature (TJ max) of +150°C, validated per AEC-Q101 stress testing. This allows operation in under-hood automotive environments without active cooling, provided thermal design maintains junction temperature below this limit using the specified RθJC = 5°C/W and appropriate heatsinking.
Is MBR735H pin-compatible with standard TO-220AC rectifiers?
Yes, MBR735H uses the industry-standard TO-220AC outline with anode, cathode, and electrically connected metal tab-matching mechanical and solder footprint of all TO-220AC Schottky and fast recovery rectifiers. Mounting torque must not exceed 0.56 N·m to avoid package damage.
Does MBR735H meet halogen-free and RoHS requirements?
Yes, MBR735H complies with RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21. The molding compound contains no brominated flame retardants or chlorine-based additives, and lead content is below 1000 ppm across all terminals and die attach materials.
What is the forward voltage of MBR735H at elevated temperature?
At 7.5A forward current and 125°C junction temperature, the MBR735H exhibits a typical forward voltage (VF) of 0.57V. This value is confirmed in the Electrical Specifications table and reflects stable conduction performance across the full automotive operating range.
How does the guard ring feature improve reliability of MBR735H?
The guard ring in MBR735H prevents premature edge breakdown under reverse bias, especially during voltage transients. It extends the effective depletion region beyond the active junction area, ensuring rated VRRM = 35V is sustained across process variation and long-term thermal cycling-key for AEC-Q101 qualification.
MBR735H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-220-2
- 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 @ 15 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:
- TO-220AC
- Operating Temperature - Junction:
- -55°C ~ 150°C
MBR735H FAQ
1.How can I place an order for MBR735H through Aetrix?
Please submit a Request for Quotation (RFQ) for MBR735H 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 MBR735H reliable?
The price and inventory of MBR735H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBR735H is usually 5 days.
3.What payment methods are accepted for MBR735H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBR735H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBR735H?
MBR735H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBR735H 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 MBR735H?
For technical support, including MBR735H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBR735H requirements.
6.How does Aetrix verify that MBR735H is sourced from the original manufacturer or authorized distributors?
All MBR735H 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 MBR735H meets industry standards.
7.What is the process for return or replacement of MBR735H?
All MBR735H units undergo pre-shipment inspection (PSI). If there is an issue with MBR735H, 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 MBR735H part is unused and in its original packaging.
Return procedure for MBR735H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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