Taiwan Semiconductor Corporation MBRF2550CTH

Overview

MBRF2550CTH from Taiwan Semiconductor is a dual-die AEC-Q101-qualified Schottky barrier rectifier in ITO-220AB package, rated for 25A average forward current, 50V repetitive peak reverse voltage, and 200A non-repetitive surge current; it delivers low forward voltage (0.75V typ. at 12.5A, 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 MBRF2550CTH datasheet, MBRF2550CTH pinout, MBRF2550CTH application, or MBRF2550CTH equivalent, key selection criteria include its AEC-Q101 qualification, dual-diode configuration with common-cathode topology, thermal resistance (R_θJC = 1°C/W), guard-ring overvoltage protection, and UL recognition (E-326243).

Technical Context

This device integrates two independent Schottky diodes in a single ITO-220AB thermally optimized package with isolated anodes and shared cathode terminal, supporting common-cathode full-wave rectification. Its 50V V_RRM, 0.75V typical forward voltage at 12.5A/25°C, and 10,000 V/µs dv/dt rating enable fast-switching operation in high-frequency SMPS topologies.

The AEC-Q101 qualification confirms robustness under automotive temperature cycling (-55°C to +150°C), mechanical shock, and whisker resistance (JESD201 Class 2); its matte tin-plated leads meet J-STD-002 solderability, and UL 94V-0 molding compound ensures flame-retardant reliability in enclosed power modules.

Key Specifications

Pinout & Package

Package: ITO-220AB - Thermally enhanced plastic package with isolated anode leads (pins 1 & 2) and common cathode tab (pin 3), UL 94V-0 rated, 1.70g mass, designed for vertical mounting and heatsink attachment via screw torque ≤0.56 N·m.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-MBR2550CT and MBR2550CTH, the MBRF2550CTH uniquely combines AEC-Q101 qualification, UL recognition (E-326243), and halogen-free compliance in one certified part-making it the preferred choice for Tier-1 automotive power modules where regulatory alignment and long-term supply continuity are critical.

Availability

MBRF2550CTH is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial SMPS outputs, and telecom power brick rectification requiring stable component supply, long-lifecycle support, and AEC-Q101-compliant sourcing.

Supply support for MBRF2550CTH 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 discrete manufacturer headquartered in Hsinchu, Taiwan, specializing in high-reliability rectifiers, TVS devices, and MOSFETs for automotive and industrial markets.

The MBRF25xxCTH series was developed to deliver AEC-Q101-qualified Schottky rectifiers with enhanced thermal performance and UL safety certification for next-generation automotive power electronics and high-density industrial PSUs.

FAQ

What does the "H" suffix signify in MBRF2550CTH?

The "H" suffix in MBRF2550CTH indicates AEC-Q101 qualification, confirming that the device has passed rigorous automotive-grade stress tests-including temperature cycling, highly accelerated life testing (HALT), and mechanical shock-per JEDEC standards. This makes MBRF2550CTH suitable for under-hood and safety-critical vehicle systems where standard commercial parts are insufficient. The base part MBRF2550CT lacks this qualification.

Is MBRF2550CTH pin-compatible with other ITO-220AB dual-Schottky rectifiers?

Yes, MBRF2550CTH uses the standard ITO-220AB footprint with three terminals: Anode A (Pin 1), Anode B (Pin 2), and common Cathode (Pin 3/tab). It matches mechanical and thermal dimensions of industry-standard dual-Schottky rectifiers like VS-MBR2550CT and MBR2550CTH, enabling direct PCB replacement without layout changes-provided voltage and surge ratings align with system requirements.

What is the maximum continuous forward current rating for MBRF2550CTH at 100°C case temperature?

Per the forward current derating curve in the datasheet, MBRF2550CTH supports approximately 18A average forward current at 100°C case temperature. This is derived from its 25A rating at 25°C and linear derating slope ending at zero current at 150°C junction temperature, assuming R_θJC = 1°C/W and proper heatsinking. Actual usable current depends on ambient conditions and heatsink efficiency.

Does MBRF2550CTH have UL recognition, and what does that cover?

Yes, MBRF2550CTH carries UL Recognition under File #E-326243, covering its plastic package's flammability (UL 94V-0), electrical insulation integrity, and long-term reliability under thermal and electrical stress. This certification simplifies end-equipment safety approvals for power supplies used in medical, industrial, and telecom applications where UL listing is mandatory.

How does the guard ring feature improve reliability in MBRF2550CTH?

The guard ring in MBRF2550CTH is a diffusion-based structural element surrounding the active junction that redistributes electric field stress during voltage transients. It prevents localized avalanche breakdown at the silicon edge-especially under fast dv/dt or line surges-thereby increasing the device's robustness in noisy automotive and industrial power rails without degrading forward conduction characteristics.