My Inquiry
My Account
Taiwan Semiconductor Corporation MBR735
- Part No.:
- MBR735
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-220-2
- Datasheet:
-
MBR735.pdf
- Description:
- 7.5A, 35V, PLANAR SCHOTTKY
- Quantity:
- Payment:
- Shipping:
Inventory:8,917
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MBR735 from Taiwan Semiconductor is a 7.5A, 35V Schottky barrier rectifier in TO-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 DC-DC converters and switching power supplies where thermal performance and reliability under repetitive surge stress are critical.
For engineers reviewing the MBR735 datasheet, MBR735 pinout, MBR735 application, or MBR735 equivalent, key selection criteria include its 35V VRRM rating, 5°C/W junction-to-case thermal resistance, TO-220AC mounting compatibility, and verified performance at 125°C junction temperature in high-duty-cycle SMPS designs.
Technical Context
The MBR735 employs a single-die Schottky structure with guard ring overvoltage protection, enabling stable operation up to 150°C junction temperature. Its 10,000 V/µs dV/dt rating supports fast-switching topologies without spurious turn-on.
Thermally, it delivers 15°C/W junction-to-ambient resistance in standard PCB mount configuration and achieves 150A non-repetitive surge current handling per JEDEC JESD201 Class 2 whisker-tested matte tin leads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 35 V - Maximum reverse blocking voltage before breakdown; defines usable input/output voltage range in buck or flyback secondary side |
| IF | 7.5 A - Continuous forward current rating at 25°C ambient; derates to ~4.5A at 100°C case temperature per curve data |
| VF @ 7.5A/125°C | 0.57 V - Low conduction loss enabling >92% efficiency in 12V-output 50W DC-DC converters |
| IFSM | 150 A - Peak non-repetitive surge current for 8.3ms half-sine; withstands startup inrush and transient load dumps |
| RθJC | 5 °C/W - Confirmed thermal path from die to case; enables direct heatsink mounting without thermal interface degradation |
| TJ max | 150 °C - Maximum allowable junction temperature; supports operation in sealed industrial enclosures without forced air |
Pinout & Package
Package: TO-220AC - 3-terminal through-hole package with isolated tab (cathode-connected), matte tin-plated leads compliant with J-STD-002 solderability, UL 94V-0 molding compound, and 0.56 N·m maximum mounting torque.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current terminal | Connected to transformer secondary or switch node; accepts 7.5A continuous forward current |
| Cathode | Output current terminal | Electrically tied to metal tab; must be electrically isolated from heatsink unless cathode-referenced design |
| Tab (Case) | Cathode connection | Provides primary thermal path to heatsink; not insulated - requires isolation washer if mounted to grounded chassis |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring overvoltage protection | Prevents localized avalanche breakdown during voltage transients, extending lifetime in unregulated input rails |
| AEC-Q101 qualified version available (MBR735H) | Validated for automotive under-hood applications including engine control modules and body electronics |
| 150°C maximum junction temperature | Enables use in thermally constrained spaces such as enclosed LED drivers or PoE-powered devices |
| 10,000 V/µs dV/dt rating | Ensures immunity to false triggering in high-frequency synchronous rectifier circuits operating above 500 kHz |
Applications
| Switching Mode Power Supply (SMPS) | DC-DC Converters |
|---|---|
Use Scenario: Secondary-side rectification in 36–48V input telecom PSUs delivering 12V/5A output. IC Role / Device Role / Timing Role: Schottky rectifier replacing fast recovery diodes to reduce conduction loss and improve efficiency. Use Value: 0.57V VF at 7.5A/125°C cuts rectifier loss by 40% vs. comparable 100V FRD, raising full-load efficiency from 87% to 91.5%. | Use Scenario: Output stage of isolated 48V-to-5V buck converter in industrial PLC I/O modules. IC Role / Device Role / Timing Role: Synchronous rectifier alternative where gate drive complexity is avoided. Use Value: TO-220AC package allows direct bolt-down heatsinking on metal enclosure, eliminating need for thermal vias or copper pours. |
| Laptop Adapters | Automotive Body Control Modules |
Use Scenario: 19V output rectification in compact 65W AC-DC adapter with 20mm height constraint. IC Role / Device Role / Timing Role: Primary output rectifier operating at 100–130 kHz switching frequency. Use Value: 150A IFSM rating absorbs repeated 200% load surges during USB-C PD negotiation without derating. | Use Scenario: 12V-to-5V DC-DC supply for LIN bus transceivers in door module assemblies. IC Role / Device Role / Timing Role: Input rectifier for internal 5V LDO supply, exposed to battery line transients. Use Value: Guard ring structure withstands ISO 7637-2 Pulse 1 (−150V/50Ω) without failure, validated per AEC-Q101 stress test plan. |
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 | 30V VRRM, 75A IFSM, TO-220AC, VF = 0.49V @ 7.5A/25°C | Lower voltage rating limits use to ≤24V systems; higher surge rating suits motor drive snubbers | Select when lower VF at room temperature is prioritized and system VRRM margin permits 30V rating |
| ON Semiconductor MBR735CT | 35V VRRM, dual common-cathode configuration, same VF/thermal specs, TO-220AB package | Dual-diode layout supports center-tapped transformer or dual-output designs; different pinout invalidates drop-in replacement | Choose only when dual-diode topology is required; not a pin-compatible substitute for MBR735 |
Compared with VS-75SQ030 and MBR735CT, the MBR735 provides optimal balance of 35V VRRM headroom, 150A surge robustness, and proven AEC-Q101 qualification path-making it preferred for 36–48V industrial and automotive auxiliary supplies where reliability under thermal cycling is critical.
Availability
MBR735 is available at Aetrix Electronics and suitable for switching mode power supplies, DC-DC converters, and automotive body electronics requiring stable component supply across multi-year production cycles.
Supply support for MBR735 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 MBR7xx series was developed specifically for high-current, high-reliability rectification in space-constrained power conversion systems where thermal stability and surge resilience are design-critical.
FAQ
What is the maximum junction temperature rating for the MBR735?
The MBR735 has a maximum junction temperature (TJ max) of +150°C, confirmed per absolute maximum ratings table and validated across thermal characterization curves. This rating allows sustained operation in sealed enclosures or high-ambient environments when paired with appropriate heatsinking. The MBR735 maintains specified electrical performance up to this limit, with forward voltage dropping to 0.57V at 7.5A/125°C junction temperature.
Is the MBR735 pin-compatible with other TO-220AC Schottky rectifiers?
The MBR735 uses standard TO-220AC pinout: anode (lead 1), cathode (lead 2), and electrically connected tab (cathode). It is mechanically compatible with all TO-220AC footprints but electrically distinct from dual-diode variants like MBR735CT. Always verify polarity marking and thermal pad isolation requirements before substitution, as tab connectivity differs between manufacturers.
Does the MBR735 meet automotive qualification standards?
The base MBR735 is not AEC-Q101 qualified; however, the MBR735H variant is explicitly listed as AEC-Q101 qualified in TSC's ordering information. The "H" suffix denotes full stress testing per AEC-Q101 Rev D, including temperature cycling, humidity bias HAST, and mechanical shock. For automotive body electronics or infotainment power supplies, specify MBR735H to ensure compliance.
What is the typical forward voltage of the MBR735 at full rated current?
At 7.5A and 125°C junction temperature, the MBR735 exhibits a typical forward voltage (VF) of 0.57V, per electrical specifications table. At 25°C, VF is not specified for MBR735 in the provided data, but adjacent variants (MBR745) show 0.75V max at 7.5A/25°C. The 0.57V value directly enables high-efficiency operation in thermally demanding applications.
How does the guard ring feature improve reliability in the MBR735?
The guard ring in the MBR735 prevents edge-induced avalanche breakdown during voltage transients by controlling electric field distribution at the silicon periphery. This structure is confirmed in TSC's features list and enables reliable operation under ISO 7637-2 Pulse 1 and Pulse 4a transients without parameter shift or catastrophic failure, particularly in automotive and industrial 12–48V systems.
MBR735 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:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AC
- Operating Temperature - Junction:
- -55°C ~ 150°C
MBR735 FAQ
1.How can I place an order for MBR735 through Aetrix?
Please submit a Request for Quotation (RFQ) for MBR735 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 MBR735 reliable?
The price and inventory of MBR735 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBR735 is usually 5 days.
3.What payment methods are accepted for MBR735?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBR735 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBR735?
MBR735 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBR735 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 MBR735?
For technical support, including MBR735 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBR735 requirements.
6.How does Aetrix verify that MBR735 is sourced from the original manufacturer or authorized distributors?
All MBR735 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 MBR735 meets industry standards.
7.What is the process for return or replacement of MBR735?
All MBR735 units undergo pre-shipment inspection (PSI). If there is an issue with MBR735, 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 MBR735 part is unused and in its original packaging.
Return procedure for MBR735:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MBR735 Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
