Taiwan Semiconductor Corporation MBR2090CTH

Overview

MBR2090CTH from Taiwan Semiconductor is a 20A dual-die Schottky barrier rectifier in TO-220AB package with 90V repetitive peak reverse voltage (V_RRM), 150A surge current rating (I_FSM), and 0.85V typical forward voltage at 10A/25°C. It delivers high efficiency in DC–DC converters and switching power supplies where low conduction loss and thermal robustness are critical.

For engineers reviewing the MBR2090CTH datasheet, MBR2090CTH pinout, MBR2090CTH application, or MBR2090CTH equivalent, key selection factors include its AEC-Q101 qualification, 2°C/W junction-to-case thermal resistance, 5mA max reverse leakage at 125°C, and TO-220AB mounting compatibility with standard heatsinks.

Technical Context

This device integrates two independent Schottky diodes in a single TO-220AB package with common-cathode configuration. Its guard ring structure provides overvoltage protection, and it supports continuous forward current up to 20A with junction temperature rated from –55°C to +150°C.

The MBR2090CTH operates with low forward voltage drop (0.95V max at 20A/25°C) and exhibits 5mA maximum reverse current at rated 90V and 125°C - enabling high-efficiency operation in high-frequency SMPS topologies without forced air cooling.

Key Specifications

Pinout & Package

Package: TO-220AB - Insulated case with center tab (cathode), two anode leads (pins 1 and 2), matte tin-plated leads compliant with J-STD-002 solderability, UL 94V-0 molding compound, and 0.56 N·m max mounting torque.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MBR2090CTH, the VS-20CPH09-M3 offers comparable voltage/current ratings but omits automotive qualification and has higher forward voltage, while the MBR2090CT matches performance but fails AEC-Q101 and halogen-free requirements - making MBR2090CTH the sole option for certified automotive or green-design programs.

Availability

MBR2090CTH is available at Aetrix Electronics and suitable for automotive DC–DC converters, server power supply outputs, and industrial motor drive power stages requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.

Supply support for MBR2090CTH 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 global industrial, automotive, and computing markets since 1979.

The MBR2090CTH belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-reliability power conversion in harsh environments - emphasizing low V_F, rugged surge capability, and extended temperature operation.

FAQ

What is the maximum junction temperature rating for the MBR2090CTH?

The MBR2090CTH has a maximum junction temperature (T_J) of +150°C, with operational range from –55°C to +150°C. This rating allows reliable use in under-hood automotive applications and thermally constrained industrial enclosures. The device's 2°C/W junction-to-case thermal resistance supports effective heat transfer to external heatsinks, helping maintain the MBR2090CTH within safe thermal limits even at full 20A load.

Is the MBR2090CTH pin-compatible with non-AEC-Q101 versions like MBR2090CT?

Yes, the MBR2090CTH uses the identical TO-220AB package and pinout as the standard MBR2090CT - pins 1 and 2 are anodes, and the metal tab is the common cathode. No PCB layout changes are needed when upgrading to the AEC-Q101-qualified MBR2090CTH, though users must verify mechanical mounting and thermal interface compliance per automotive qualification requirements.

What does the "H" suffix signify in MBR2090CTH?

The "H" suffix in MBR2090CTH indicates full AEC-Q101 qualification and halogen-free construction per IEC 61249-2-21. Unlike base variants, the MBR2090CTH undergoes accelerated stress testing across temperature cycling, humidity, and mechanical shock - confirming suitability for automotive power systems. It also carries RoHS compliance and green compound certification, distinguishing it from non-H variants in regulated markets.

How does the guard ring feature improve reliability in the MBR2090CTH?

The guard ring in the MBR2090CTH mitigates edge breakdown by distributing electric field stress away from the active junction periphery. This structural enhancement increases ruggedness against voltage transients and line surges - particularly beneficial in unregulated input stages of adapters and motor drives. As a result, the MBR2090CTH sustains its 90V V_RRM rating under real-world fast dv/dt conditions without external snubbers or clamps.

What is the reverse leakage current specification for MBR2090CTH at elevated temperature?

The MBR2090CTH specifies a maximum reverse leakage current (I_R) of 5 mA at 90V reverse bias and +125°C junction temperature. This value is confirmed in the manufacturer's electrical specifications table and reflects stable performance under worst-case thermal stress - critical for maintaining efficiency and preventing thermal runaway in sealed, high-ambient-temperature applications such as automotive ECUs and industrial power modules.