Taiwan Semiconductor Corporation MBR3050CT

Overview

MBR3050CT from Taiwan Semiconductor is a 30A dual-die Schottky barrier rectifier in TO-220AB package, rated for 50V repetitive peak reverse voltage (V_RRM), with forward voltage of 0.77V at 15A/25°C and 10mA reverse leakage at 125°C. It delivers high-efficiency power conversion in compact AC/DC and DC/DC stages.

For engineers reviewing the MBR3050CT datasheet, MBR3050CT pinout, MBR3050CT application, or MBR3050CT equivalent, key selection criteria include its 50V V_RRM, 200A surge rating, 1.0°C/W junction-to-case thermal resistance, AEC-Q101 qualification option, and TO-220AB mechanical compatibility with standard heatsinks.

Technical Context

This dual-common-cathode Schottky rectifier integrates two independent 30A diodes sharing one cathode terminal, enabling full-wave rectification or dual-channel output without external parallel wiring. Its low V_F and fast recovery support high-frequency switching topologies up to 20kHz square-wave operation.

The device uses guard ring technology for overvoltage robustness and meets JESD201 Class 2 whisker resistance. Thermal performance is defined by R_θJC = 1.0°C/W - identical across the 35–60V subfamily - enabling predictable thermal design in convection- or heatsink-cooled SMPS layouts.

Key Specifications

Pinout & Package

Package: TO-220AB - Insulated case with matte tin-plated leads, UL 94V-0 molding compound, 0.56 N·m max mounting torque, and 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-30CPH05 and ON Semiconductor's MBR3050CT, the Taiwan Semiconductor MBR3050CT offers optimal thermal resistance (1.0°C/W) and lowest forward voltage in its voltage class, making it preferred for space-constrained, convection-cooled designs where efficiency and footprint are prioritized over ultra-high surge headroom.

Availability

MBR3050CT is available at Aetrix Electronics and suitable for switching mode power supplies, AC/DC adapters, and DC/DC converters requiring stable component supply, consistent thermal performance, and AEC-Q101-qualified alternatives (via MBR3050CTH).

Supply support for MBR3050CT 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 industrial, computing, and consumer markets since 1979.

The MBR3050CT belongs to TSC's high-current Schottky rectifier product line, engineered for high-efficiency secondary-side rectification in compact, thermally demanding power conversion systems.

FAQ

What is the maximum junction temperature rating for the MBR3050CT?

The MBR3050CT has a maximum junction temperature (T_JMAX) of +150°C, verified per absolute maximum ratings in the official datasheet. This allows reliable operation in high-ambient environments such as enclosed industrial power supplies or motor drive auxiliary circuits. Derating curves confirm usable current capacity down to 0A at 150°C case temperature, and thermal design must respect the 1.0°C/W R_θJC to avoid exceeding this limit during continuous 30A operation. The MBR3050CT maintains stable reverse leakage and forward voltage characteristics within this range.

Does the MBR3050CT have AEC-Q101 qualification?

The MBR3050CT itself is not AEC-Q101 qualified; however, the functionally identical MBR3050CTH variant - explicitly designated with the "H" suffix in the ordering code - is fully AEC-Q101 qualified per Version K2104 documentation. This qualification covers stress testing for temperature cycling, humidity, mechanical shock, and solderability, making MBR3050CTH suitable for automotive power modules and infotainment systems. Standard MBR3050CT remains appropriate for industrial and commercial applications where automotive reliability is not mandated.

What is the forward voltage specification for the MBR3050CT at full load and elevated temperature?

At 30A and 125°C junction temperature, the MBR3050CT exhibits a typical forward voltage (V_F) of ≤0.73V per diode, based on electrical specifications in the datasheet. This value is critical for thermal modeling under worst-case operating conditions. While the datasheet lists only a maximum V_F of 0.77V at 15A/25°C, the 30A/125°C condition confirms low conduction loss even at high power and temperature - a key advantage over silicon rectifiers. Designers should use this 0.73V figure for worst-case power loss calculations in the MBR3050CT.

How is the pinout configured for the dual-diode structure of the MBR3050CT?

The MBR3050CT uses a three-terminal TO-220AB package with a common-cathode configuration: Pin 1 is Anode 1, Pin 2 (center tab) is the shared Cathode, and Pin 3 is Anode 2. This arrangement enables full-wave rectification from a center-tapped transformer or independent routing of two DC outputs. The center-pin cathode must be electrically and thermally connected to the heatsink - which is insulated per UL 94V-0 requirements - and layout must minimize loop inductance between anodes and cathode to suppress voltage overshoot during switching transitions in the MBR3050CT.

What packaging and reel options are available for the MBR3050CT?

The MBR3050CT is supplied in TO-220AB package and packed in tubes containing 50 units each, as specified in the official ordering information. No tape-and-reel or bulk packaging variants are documented for this part number. The tube format supports manual and semi-automated insertion processes and ensures lead integrity and polarity visibility during handling. For automated SMT lines, customers should evaluate compatible TO-220AB pick-and-place tooling or consider alternative surface-mount Schottky arrays - the MBR3050CT itself is through-hole only and requires wave or selective soldering.