Taiwan Semiconductor Corporation MBR3090CTH

Overview

MBR3090CTH from Taiwan Semiconductor is a 30A, 90V dual-die Schottky barrier rectifier in TO-220AB package, featuring 0.84V max forward voltage at 15A/25°C, 200A surge capability, and AEC-Q101 qualification for automotive-grade reliability. It delivers low conduction loss in high-frequency DC/DC converters and switching power supplies.

For engineers reviewing the MBR3090CTH datasheet, MBR3090CTH pinout, MBR3090CTH application, or MBR3090CTH equivalent, key selection criteria include its 90V VRRM rating, 1.5°C/W junction-to-case thermal resistance, AEC-Q101 qualification status, and dual-common-cathode configuration for center-tapped transformer rectification.

Technical Context

This device integrates two independent Schottky diodes in a single TO-220AB thermally optimized package with common cathode connection. Its 90V repetitive peak reverse voltage and 7.5mA max reverse leakage at 125°C support stable operation in 48V–72V bus systems under elevated temperature stress.

The 1.5°C/W R_θJC, 200A I_FSM (8.3ms half-sine), and 10,000V/μs dv/dt rating enable robust performance in high-efficiency, high-density SMPS designs where thermal management and transient immunity are critical.

Key Specifications

Pinout & Package

Package: TO-220AB, 3-terminal molded plastic case with matte tin-plated leads, UL 94V-0 rated compound, and polarity marking as indicated on device body.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-30CPH09-M3, MBR3090CTH trades 0.5°C/W higher thermal resistance for AEC-Q101 compliance and TO-220AB compatibility; versus MBR30H90CT, it offers identical performance but differs in manufacturer-specific process control and traceability documentation.

Availability

MBR3090CTH is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial SMPS front-ends, and server PSU output stages requiring stable component supply with long-term lifecycle visibility.

Supply support for MBR3090CTH 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 automotive, industrial, and computing markets since 1979.

The MBR30xCTH series belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-reliability 12V–48V automotive subsystems and ruggedized industrial power conversion.

FAQ

What does the "H" suffix in MBR3090CTH signify?

The "H" suffix in MBR3090CTH indicates full AEC-Q101 qualification per Rev D standards, covering stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing. This certification confirms MBR3090CTH's suitability for automotive powertrain and chassis applications where reliability under thermal and vibration stress is mandatory.

Is MBR3090CTH pin-compatible with non-AEC-Q101 versions like MBR3090CT?

Yes, MBR3090CTH shares identical TO-220AB package dimensions, pinout, and mechanical markings with MBR3090CT. The only difference is the AEC-Q101 qualification and associated process controls; electrical parameters, thermal performance, and mounting specifications remain unchanged between the two variants.

What is the maximum continuous forward current rating for MBR3090CTH at 100°C case temperature?

Per the forward current derating curve in the MBR3090CTH datasheet, the maximum continuous forward current drops to approximately 22A at 100°C case temperature. This is derived from the 30A rating at 25°C and linear derating slope of ~0.32A/°C above 25°C, consistent with its 1.5°C/W R_θJC and 150°C TJ max.

Does MBR3090CTH support center-tapped transformer full-wave rectification?

Yes, MBR3090CTH is configured as a dual-anode, common-cathode Schottky rectifier, making it ideal for center-tapped transformer full-wave rectification. Pins 1 and 3 serve as independent anodes, while Pin 2 is the shared cathode-enabling simultaneous conduction of both diodes during opposite half-cycles without external interconnection.

How does the guard ring feature improve MBR3090CTH reliability?

The guard ring in MBR3090CTH enhances edge termination robustness by distributing electric field stress away from the active junction periphery. This design reduces premature avalanche breakdown under voltage transients and improves VRRM consistency across temperature and process variation-directly contributing to its 10,000V/μs dv/dt rating and stable performance in noisy automotive environments.