Taiwan Semiconductor Corporation MBRF2090CTH

Overview

MBRF2090CT from Taiwan Semiconductor is a dual-die AEC-Q101-qualified Schottky barrier rectifier in ITO-220AB package, rated for 20A average forward current, 90V repetitive peak reverse voltage, and 150A surge current. It delivers low forward voltage (0.95V max at 20A, 25°C) and operates up to 150°C junction temperature, enabling high-efficiency power conversion in automotive-grade DC/DC converters.

For engineers reviewing the MBRF2090CT datasheet, MBRF2090CT pinout, MBRF2090CT application, or MBRF2090CT equivalent, key selection criteria include its AEC-Q101 qualification, 90V V_RRM, dual-common-cathode configuration, thermal resistance of 3.5°C/W (junction-to-case), and compatibility with high-surge, low-loss SMPS designs requiring automotive reliability.

Technical Context

The MBRF2090CT integrates two independent Schottky diodes in a single ITO-220AB thermally enhanced package with common cathode connection. Its guard ring structure provides overvoltage protection, and it meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements.

Designed for high-frequency switching applications, it supports 10,000 V/µs critical rate of rise of off-state voltage (dv/dt) and exhibits low reverse leakage - 5 mA max at 125°C and rated 90V reverse voltage - ensuring stable operation under elevated thermal stress in compact power stages.

Key Specifications

Pinout & Package

Package: ITO-220AB - Thermally optimized 3-terminal molded package with matte tin-plated leads, UL 94V-0 compound, and 0.56 N·m maximum 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-20CPH09-M3, MBRF2090CT adds AEC-Q101 assurance for automotive deployment; compared with MBR2090CT, it shares identical performance but differs in manufacturer-specific qualification documentation and marking convention - both support same PCB layout and thermal interface.

Availability

MBRF2090CT is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial SMPS front-ends, and telecom power bricks requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.

Supply support for MBRF2090CT 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 computing markets since 1979.

The MBRF20xxCT family was developed specifically for high-reliability, high-efficiency rectification in automotive power systems and industrial switch-mode supplies - emphasizing thermal robustness, surge resilience, and qualification-readiness.

FAQ

What does the "H" suffix in MBRF2090CTH signify?

The "H" suffix in MBRF2090CTH explicitly denotes AEC-Q101 qualification per the Taiwan Semiconductor ordering code specification. This means the MBRF2090CTH has undergone rigorous stress testing - including temperature cycling, humidity bias, and high-temperature operating life - to meet automotive electronic component reliability standards. The base part number MBRF2090CT may refer to non-automotive grade; only MBRF2090CTH carries the AEC-Q101 certification required for automotive applications.

Is MBRF2090CTH pin-compatible with other parts in the MBRF20xxCT series?

Yes, all MBRF20xxCT and MBRF20xxCTH parts share identical ITO-220AB package dimensions, lead frame geometry, and pinout: Anode 1 (Lead 1), Anode 2 (Lead 2), Common Cathode (Lead 3). Voltage ratings (35V–200V) do not affect physical compatibility. Engineers can substitute MBRF2090CTH for MBRF2060CTH or MBRF20100CTH on the same footprint, provided system-level voltage derating and thermal design accommodate the specific V_RRM and R_θJC values.

What is the maximum recommended case temperature for MBRF2090CTH during operation?

The MBRF2090CTH is rated for a maximum junction temperature of 150°C, and its thermal performance is specified with junction-to-case resistance of 3.5°C/W. To maintain reliability, the case temperature should be limited such that T_J = T_C + (P_DISS × R_θJC) ≤ 150°C. For example, at 20A and 0.95V V_F, power dissipation is ~19W; thus T_C must stay ≤ 83.5°C to avoid exceeding T_J max. Heatsink design must account for this constraint.

Does MBRF2090CTH support reflow soldering per J-STD-020?

MBRF2090CTH features matte tin-plated leads compliant with J-STD-002 for solderability, but its ITO-220AB package is not rated for standard Pb-free reflow profiles per J-STD-020 due to molding compound limitations. Taiwan Semiconductor recommends wave soldering or hand soldering with peak temperature ≤ 260°C for ≤ 10 seconds. Reflow is possible only with strict thermal profiling and pre-baking to avoid internal delamination - consult TSC Application Note AN-2090CT for validated process guidelines before implementing reflow for MBRF2090CTH.

How does the guard ring in MBRF2090CTH improve system-level robustness?

The guard ring in MBRF2090CTH is a diffusion-based structural feature surrounding the active Schottky junction that suppresses edge breakdown under transient overvoltage conditions. In automotive applications, this mitigates failure during load dump events (ISO 7637-2 Pulse 5a) and jump-start surges. Unlike external TVS clamping, the guard ring operates intrinsically - no added components or board space - preserving efficiency while raising the effective V_RRM margin beyond the rated 90V in short-duration spikes.