Taiwan Semiconductor Corporation MBRF1090CT

Overview

MBRF1090CT from Taiwan Semiconductor is a dual-die Schottky barrier rectifier in ITO-220AB package, rated for 10 A average forward current, 90 V repetitive peak reverse voltage, and 120 A non-repetitive surge current; it delivers low forward voltage drop (0.95 V at 10 A, 25°C) and operates up to 150°C junction temperature, enabling high-efficiency power conversion in compact AC/DC adapters.

For engineers reviewing the MBRF1090CT datasheet, MBRF1090CT pinout, MBRF1090CT application, or MBRF1090CT equivalent, key selection criteria include its 90 V V_RRM, dual common-cathode configuration, 3.5 °C/W junction-to-case thermal resistance, and AEC-Q101 qualification availability - all critical for thermally constrained, automotive-grade, or industrial SMPS designs.

Technical Context

This device integrates two independent Schottky diodes in a single ITO-220AB thermally enhanced package with common cathode connection. Its guard ring structure provides overvoltage protection, while matte tin-plated leads ensure solderability per J-STD-002 and whisker resistance per JESD 201 Class 2.

The MBRF1090CT supports high-frequency switching with low reverse recovery charge and exhibits 5 µA max reverse leakage at 125°C under rated 90 V reverse bias. Its 10,000 V/µs critical dv/dt rating enables stable operation in fast-switching topologies without parasitic turn-on.

Key Specifications

Pinout & Package

Package: ITO-220AB - Thermally optimized 3-terminal molded package with isolated metal tab (cathode-connected), UL 94V-0 rated compound, and 1.70 g mass; designed for mechanical mounting via screw (max 0.56 N·m torque) and direct heatsink interface.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-10BQ090PBF and MBR1090CT, the MBRF1090CT offers unique AEC-Q101 qualification readiness and tighter high-temperature V_F stability (0.85 V @ 125°C), making it preferred for thermally demanding automotive or industrial deployments where long-term reliability under stress is prioritized over marginal room-temperature efficiency gains.

Availability

MBRF1090CT is available at Aetrix Electronics and suitable for AC/DC adapters, industrial DC-DC converters, and automotive on-board chargers requiring stable component supply, consistent thermal performance, and long-lifecycle availability.

Supply support for MBRF1090CT 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 Company (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power rectifiers, TVS devices, and MOSFETs for industrial and automotive markets.

The MBRF10xCT family was engineered for high-efficiency, high-reliability secondary-side rectification in space-constrained power supplies, emphasizing thermal robustness, surge resilience, and qualification-ready variants for mission-critical applications.

FAQ

What is the maximum junction temperature rating for the MBRF1090CT?

The MBRF1090CT has a maximum junction temperature (T_J) of +150°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet. This rating allows continuous operation in high-ambient environments such as enclosed industrial enclosures or automotive under-hood locations. Derating curves confirm usable current capacity down to 6 A at 125°C case temperature. The MBRF1090CT must be mounted to a heatsink capable of maintaining T_J ≤ 150°C under worst-case load and ambient conditions.

Does the MBRF1090CT have AEC-Q101 qualification?

The base MBRF1090CT is not AEC-Q101 qualified, but the MBRF1090CTH variant - indicated by the "H" suffix in the ordering code - is fully AEC-Q101 qualified per Rev. M2105 documentation. This qualification covers temperature cycling, humidity testing, and mechanical shock per automotive stress standards. For automotive applications, specify MBRF1090CTH; the MBRF1090CT itself remains suitable for industrial and commercial use where automotive qualification is not mandated.

What is the forward voltage drop of the MBRF1090CT at 10 A and 125°C?

The MBRF1090CT exhibits a maximum forward voltage drop of 0.85 V per diode at 10 A forward current and 125°C junction temperature, as specified in the Electrical Specifications table. This value reflects real-world thermal performance under sustained load and is critical for calculating conduction losses in high-temperature operation. At 25°C, the same condition yields 0.95 V max - confirming improved V_F behavior with rising temperature, typical of Schottky diodes.

How is the pinout configured for the dual-diode structure in the MBRF1090CT?

The MBRF1090CT uses a common-cathode dual-diode configuration in ITO-220AB package: the metal tab is the shared cathode terminal, Lead 1 is Anode 1, and Lead 2 is Anode 2. This arrangement supports center-tapped transformer outputs, interleaved rectification, or redundant current paths. Polarity is marked on the device body; the tab must be electrically isolated unless serving as system common. No internal connection exists between the two anodes - they operate independently.

What packaging and mounting specifications apply to the MBRF1090CT?

The MBRF1090CT is supplied in ITO-220AB package with matte tin-plated leads, UL 94V-0 molding compound, and 1.70 g typical weight. Mounting torque must not exceed 0.56 N·m when securing the tab to a heatsink. Leads are solderable per J-STD-002, and the device passes JESD 201 Class 2 whisker testing. Polarity is marked on the device body, and orientation must align with schematic symbol to avoid reverse-bias failure during assembly.