Taiwan Semiconductor Corporation MBRF1035H

Overview

MBRF1035H from Taiwan Semiconductor is a 10A, 35V AEC-Q101-qualified Schottky barrier rectifier in ITO-220AC package, featuring 0.70V max forward voltage at 10A/25°C, 150A surge current capability, and guard ring over-voltage protection-used in automotive-grade DC-DC converters and switching power supplies.

For engineers reviewing the MBRF1035H datasheet, MBRF1035H pinout, MBRF1035H application, or MBRF1035H equivalent, key selection criteria include its AEC-Q101 qualification, TJ = –55°C to +150°C operating range, 3°C/W junction-to-case thermal resistance, and ITO-220AC mounting compatibility with 0.56 N·m torque limit.

Technical Context

This single-die Schottky rectifier operates with low conduction loss due to its metal–semiconductor junction, enabling high-efficiency rectification in high-frequency switching topologies. Its 10,000 V/µs critical dv/dt rating supports robust operation in fast-switching SMPS environments.

The device integrates a guard ring structure for enhanced transient over-voltage immunity and meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements-critical for under-hood automotive power modules.

Key Specifications

Pinout & Package

Package: ITO-220AC - 3-terminal through-hole molded package with isolated tab (cathode-connected), matte tin-plated leads compliant with J-STD-002 solderability, UL Recognized File #E-326243, weight ≈1.70 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-MBR1035CT and MBR1035CT, the MBRF1035H provides verified AEC-Q101 qualification in a single-diode ITO-220AC package with lower VF and superior thermal resistance-making it the preferred choice for space-constrained, thermally demanding automotive rectification where single-diode functionality suffices.

Availability

MBRF1035H is available at Aetrix Electronics and suitable for automotive power conversion, industrial SMPS, and LED driver designs requiring stable component supply, AEC-Q101 compliance, and high-reliability through-hole rectification.

Supply support for MBRF1035H 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 automotive, industrial, and consumer markets since 1979.

The MBRF series targets high-reliability power rectification in harsh-environment applications, with emphasis on AEC-Q101 qualification, thermal robustness, and UL safety recognition for automotive and industrial power systems.

FAQ

What does the "H" suffix indicate in MBRF1035H?

The "H" suffix in MBRF1035H denotes AEC-Q101 qualification per the Taiwan Semiconductor ordering code convention. This means the MBRF1035H has undergone stress testing-including temperature cycling, high-temperature operating life, and ESD-to meet automotive-grade reliability standards. Non-H variants like MBRF1035 are not AEC-Q101 qualified, making the MBRF1035H mandatory for under-hood or safety-critical automotive applications.

Is MBRF1035H pin-compatible with standard TO-220 rectifiers?

No-MBRF1035H uses the ITO-220AC package, which has an isolated metal tab and different lead spacing than standard TO-220AB/TO-220AC. The ITO-220AC tab is electrically connected to the cathode, while TO-220AB's tab is typically isolated. PCB layout must accommodate ITO-220AC's 2.54 mm lead pitch and tab isolation; direct replacement requires mechanical and thermal redesign.

What is the maximum recommended mounting torque for MBRF1035H?

The maximum mounting torque for MBRF1035H is 0.56 N·m, as specified in the mechanical data section. Exceeding this value risks cracking the epoxy molding compound or damaging internal wire bonds. Use a calibrated torque screwdriver during heatsink attachment, and ensure flat, clean mounting surfaces to maintain optimal thermal contact without mechanical overstress on the MBRF1035H package.

Does MBRF1035H support operation at 125°C junction temperature?

Yes-MBRF1035H is fully specified for operation up to TJ = +150°C, with forward voltage dropping to 0.57V at 10A and 125°C. Its 3°C/W junction-to-case thermal resistance allows reliable operation at 125°C junction temperature when mounted on a properly sized heatsink with ≤30°C temperature rise above ambient. Derating curves confirm 10A continuous current is sustainable up to 100°C case temperature.

How does the guard ring in MBRF1035H improve reliability?

The guard ring in MBRF1035H is a diffusion-based structural feature that redistributes electric field stress away from the active junction periphery. This prevents premature avalanche breakdown during transient over-voltage events-such as ISO 7637-2 load dump pulses-and extends device lifetime under repeated surge conditions. It directly contributes to the MBRF1035H's 10,000 V/µs dv/dt rating and robustness in automotive power rails.