Taiwan Semiconductor Corporation MBRF2035

Overview

MBRF2035 from Taiwan Semiconductor is a 20A, 35V Schottky barrier rectifier in ITO-220AC package, featuring low forward voltage (0.75 V max at 20 A, 25°C), 150 A 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 MBRF2035 datasheet, MBRF2035 pinout, MBRF2035 application, or MBRF2035 equivalent, key selection criteria include its 35 V repetitive peak reverse voltage, 3 °C/W junction-to-case thermal resistance, 200 µA max reverse leakage at 25°C, and ITO-220AC mechanical compatibility with heatsink mounting.

Technical Context

This single-die Schottky rectifier uses a guard ring structure for over-voltage protection and operates across –55°C to +150°C junction temperature range. Its 10,000 V/µs critical dv/dt rating supports fast-switching topologies without parasitic turn-on.

The device delivers high efficiency via low conduction loss (VF ≤ 0.75 V @ 20 A, 25°C) and low thermal resistance (R_θJC = 3 °C/W), enabling compact thermal design in space-constrained power stages.

Key Specifications

Pinout & Package

Package: ITO-220AC - Insulated TO-220 variant with isolated tab, UL 94V-0 molding compound, matte tin-plated leads, and 0.56 N·m maximum mounting torque.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky rectifier applications.

Compared with MBRF2035, VS-20BQ030PBF offers lower forward voltage but reduced voltage margin, while MBR2035CT provides dual-diode functionality at the cost of topology and thermal interface changes-neither is pin-compatible, and both require board-level validation.

Availability

MBRF2035 is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial SMPS outputs, and laptop adapters requiring stable component supply, AEC-Q101 traceability (via MBRF2035H), and long-term production continuity.

Supply support for MBRF2035 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 power discrete manufacturer headquartered in Hsinchu, Taiwan, serving global automotive, industrial, and consumer markets since 1979.

The MBRF2035 belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered for high-reliability power conversion in thermally demanding environments where low V_F, robust surge handling, and isolation integrity are critical.

FAQ

What is the maximum junction temperature rating for MBRF2035?

The MBRF2035 has a maximum junction temperature (T_J) of +150°C, allowing reliable operation in high-ambient environments such as automotive under-hood locations or enclosed industrial power supplies. This rating is validated per JEDEC test conditions and supported by its 3 °C/W junction-to-case thermal resistance. Derating curves in the MBRF2035 datasheet define allowable average forward current versus case temperature.

Is MBRF2035 pin-compatible with standard TO-220 rectifiers?

MBRF2035 uses the ITO-220AC package, which shares the same outline and mounting hole pattern as TO-220AC but features an electrically isolated metal tab. Unlike standard TO-220AC devices, the ITO-220AC tab is insulated-enabling direct heatsink mounting without insulating hardware. Mechanical fit is identical, but electrical isolation must be verified in the target PCB layout.

What does the "H" suffix mean in MBRF2035H?

The "H" suffix in MBRF2035H indicates AEC-Q101 qualification, meaning the device has undergone stress testing per the Automotive Electronics Council's failure-mechanism-based qualification standard for discrete semiconductors. MBRF2035H is screened for temperature cycling, humidity bias, ESD, and high-temperature operating life-making it suitable for automotive powertrain and body electronics applications.

How does MBRF2035 compare to MBRF2045 in terms of forward voltage?

At 20 A and 25°C, MBRF2035 has a maximum forward voltage (V_F) of 0.75 V, while MBRF2045 is rated at the same limit. However, MBRF2035 typically exhibits lower V_F than higher-voltage variants due to reduced barrier height-confirmed by typical curves showing ~0.65 V at 125°C. This makes MBRF2035 preferable in low-voltage, high-efficiency designs where 35 V blocking suffices.

Does MBRF2035 meet halogen-free and RoHS requirements?

Yes, MBRF2035 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. Certificate of Compliance and material declarations are available upon request for MBRF2035 from Taiwan Semiconductor's authorized distribution channel.