Taiwan Semiconductor Corporation MBRF1050

Overview

MBRF1050 from Taiwan Semiconductor is a 10A, 50V Schottky barrier rectifier in ITO-220AC package, featuring low forward voltage (0.80 V at 10A, 25°C), 150A surge current 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 fast recovery are critical.

For engineers reviewing the MBRF1050 datasheet, MBRF1050 pinout, MBRF1050 application, or MBRF1050 equivalent, key selection factors include its 50V V_RRM, 3°C/W junction-to-case thermal resistance, 10mA reverse leakage at 125°C, and compatibility with surface-mount heatsink mounting per ITO-220AC mechanical spec.

Technical Context

This device implements a single-die Schottky structure optimized for low conduction loss and minimal reverse recovery charge-critical for high-frequency SMPS topologies operating up to 20 kHz. Its guard ring design enhances ruggedness against transient overvoltage events without requiring external snubbers.

The ITO-220AC package enables direct case-to-heatsink thermal coupling, supporting continuous 10A operation at case temperatures ≤110°C per derating curves. Junction temperature range spans −55°C to +150°C, with storage rated to +175°C.

Key Specifications

Pinout & Package

Package: ITO-220AC - Insulated TO-220 variant with isolated metal tab, UL 94V-0 molding compound, matte tin-plated leads, and 0.56 N·m max mounting torque. Polarity marked on device body.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-MBR1050CT and MBR1050CT, the MBRF1050 provides electrical isolation via ITO-220AC packaging, AEC-Q101 qualification path, and guaranteed halogen-free construction-making it preferred for space-constrained, safety-critical, or automotive-grade power designs where tab isolation and material compliance are mandatory.

Availability

MBRF1050 is available at Aetrix Electronics and suitable for server power supplies, automotive DC-DC converters, laptop adapters, and industrial PLC power modules requiring stable component supply and long-term manufacturability.

Supply support for MBRF1050 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 industrial, computing, and automotive markets since 1979.

The MBRF10xx series targets high-reliability power conversion applications demanding low-loss rectification, robust surge handling, and extended temperature operation-especially where regulatory compliance (AEC-Q101, UL, RoHS, halogen-free) is required.

FAQ

What is the maximum junction temperature rating for the MBRF1050?

The MBRF1050 has a maximum junction temperature (T_J) of +150°C, with operational range from −55°C to +150°C. This rating enables use in high-ambient environments such as enclosed power supplies or under-hood automotive locations. Derating curves in the MBRF1050 datasheet define allowable average forward current versus case temperature, ensuring safe operation within this thermal envelope.

Is the MBRF1050 pin-compatible with standard TO-220 rectifiers?

No-the MBRF1050 uses the ITO-220AC package, which features an electrically isolated metal tab, unlike standard TO-220AB devices. While lead spacing matches TO-220, the isolation requires verification of heatsink grounding strategy. Direct replacement of non-isolated TO-220 parts may cause short circuits if the tab is inadvertently grounded; always confirm mechanical and electrical interface compatibility before substitution.

Does the MBRF1050 have AEC-Q101 qualification?

The base MBRF1050 is not AEC-Q101 qualified, but the MBRF1050H variant-identical in all electrical and thermal specifications-is explicitly qualified per AEC-Q101. The "H" suffix denotes automotive qualification; ordering code must specify MBRF1050H to receive the tested and certified part for automotive applications.

What is the reverse leakage current of the MBRF1050 at elevated temperature?

At rated 50V reverse voltage and 125°C junction temperature, the MBRF1050 exhibits a maximum reverse leakage current (I_R) of 10 mA. This value is critical for standby power budgeting in energy-efficient designs and influences thermal stability in parallel configurations. At 25°C, leakage is limited to 100 µA, per the MBRF1050 electrical specifications table.

How does the forward voltage of the MBRF1050 compare at different junction temperatures?

The MBRF1050 forward voltage decreases with rising junction temperature: it is 0.80 V maximum at 10A and 25°C, dropping to 0.70 V maximum at 10A and 125°C. This negative temperature coefficient helps balance current sharing in parallel configurations and reduces conduction loss during thermal steady-state operation in high-power applications.