Taiwan Semiconductor Corporation MBR2035CT

Overview

MBR2035CT from Taiwan Semiconductor is a 20A, 35V dual-die Schottky barrier rectifier in TO-220AB package, featuring 150A surge capability, 1°C/W junction-to-case thermal resistance, and low forward voltage (0.84V at 20A/25°C), used in high-efficiency DC-DC converters and SMPS secondary-side rectification.

For engineers reviewing the MBR2035CT datasheet, MBR2035CT pinout, MBR2035CT application, or MBR2035CT equivalent, key selection criteria include repetitive peak reverse voltage (35V), forward current rating (20A), thermal resistance (1°C/W), AEC-Q101 qualification availability, and TO-220AB mechanical compatibility with heatsink mounting.

Technical Context

The MBR2035CT integrates two independent Schottky diodes in a single TO-220AB case, configured as a common-cathode dual diode. Its guard ring structure provides overvoltage protection, and it supports high-frequency switching with low reverse recovery charge due to Schottky architecture.

Rated for continuous operation up to 150°C junction temperature, the device delivers stable forward conduction down to 0.57V at 10A/125°C and exhibits only 100µA maximum reverse leakage at 25°C - critical for minimizing standby losses in energy-sensitive power supplies.

Key Specifications

Pinout & Package

Package: TO-220AB, 3-terminal plastic case with isolated tab (cathode-connected tab), matte tin-plated leads, UL 94V-0 molding compound, 1.88g weight, polarity marked on body.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-20BQ030PbF and ON's discontinued MBR2035CT, the Taiwan Semiconductor MBR2035CT offers optimal balance of 35V rating, 1°C/W thermal performance, and active production status - making it preferred for new industrial and automotive designs requiring long-term supply assurance.

Availability

MBR2035CT is available at Aetrix Electronics and suitable for switching mode power supplies, DC-DC converters, and AC adapters requiring stable component supply across industrial, computing, and automotive electronics programs.

Supply support for MBR2035CT 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 semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global industrial, computing, and automotive markets since 1979.

The MBR2035CT belongs to TSC's high-current Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability secondary-side rectification in compact, thermally demanding power conversion systems.

FAQ

What is the pin configuration of the MBR2035CT?

The MBR2035CT uses a TO-220AB package with three terminals: Pin 1 (metal tab) is the common cathode, Pin 2 is Anode 1, and Pin 3 is Anode 2. The tab is electrically connected to the cathode and must be insulated from the heatsink unless referenced to system ground. This configuration enables dual-output or interleaved rectifier designs without additional components.

Is the MBR2035CT AEC-Q101 qualified?

The MBR2035CT itself is not automatically AEC-Q101 qualified; however, the AEC-Q101 version is explicitly designated as MBR2035CTH per the ordering code table. Only units marked with the "H" suffix have undergone automotive-grade stress testing including temperature cycling, HTRB, and ESD validation. Standard MBR2035CT is intended for industrial and commercial applications.

What is the maximum junction temperature and thermal resistance of the MBR2035CT?

The MBR2035CT has a maximum junction temperature (TJ) of +150°C and a junction-to-case thermal resistance (RθJC) of 1°C/W. This value applies specifically to the MBR2035CT through MBR2060CT variants per the Thermal Performance table. Effective heatsinking is required to maintain TJ ≤150°C at full 20A load, especially at elevated ambient temperatures.

How does the forward voltage of the MBR2035CT vary with temperature and current?

The MBR2035CT forward voltage decreases with rising junction temperature: at 20A, VF is 0.84V at 25°C and drops to 0.72V at 125°C. This negative temperature coefficient improves thermal stability in parallel configurations. At 10A/125°C, VF is 0.57V - confirming strong conduction efficiency under real-world thermal stress conditions.

Can the MBR2035CT replace standard PN junction rectifiers in existing designs?

Yes, the MBR2035CT can directly replace standard PN or fast recovery rectifiers such as 1N5408 or UF5408 in most 20A/35V applications, provided layout accommodates TO-220AB mechanical dimensions and cathode-tab isolation. Its lower VF reduces conduction loss and heat generation, often allowing reduction or elimination of heatsink mass - but reverse leakage (100µA) is higher than PN devices, so verify impact on standby behavior.