Taiwan Semiconductor Corporation MBRF20L100CT

Overview

MBRF20L100CT from Taiwan Semiconductor is a dual-die, low-forward-voltage Schottky barrier rectifier in ITO-220AB package, rated for 20A average forward current, 100V repetitive peak reverse voltage, and 150A surge capability at 8.3ms - used in high-efficiency DC/DC converters and SMPS secondary-side rectification.

For engineers reviewing the MBRF20L100CT datasheet, MBRF20L100CT pinout, MBRF20L100CT application, or MBRF20L100CT equivalent, key selection criteria include its 0.72V typical VF at 10A/25°C, 5.5°C/W junction-to-case thermal resistance, AEC-Q101 qualification option (H suffix), UL recognition (E-326243), and ITO-220AB mechanical compatibility with heatsink mounting.

Technical Context

This dual-die Schottky rectifier integrates two independent 100V/20A diodes in a common-cathode configuration within a single ITO-220AB thermally optimized package. Its guard ring structure provides overvoltage protection, while matte tin-plated leads ensure J-STD-002 solderability and JESD201 Class 2 whisker resistance.

The device operates across -55°C to +150°C junction temperature range, with 10,000 V/µs critical dv/dt rating and 20µA max reverse leakage at 25°C - enabling reliable operation in fast-switching, high-frequency power topologies where low conduction loss and thermal stability are essential.

Key Specifications

Pinout & Package

Package: ITO-220AB - thermally enhanced, single-ended through-hole package with isolated tab (cathode-connected), UL 94V-0 molding compound, and 0.56 N·m maximum mounting torque.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MBRF20L100CT, VS-20CPH05-M3 offers better thermal resistance but insufficient reverse voltage margin for 48V systems, while MBR20100CT provides identical form-factor compatibility at a modest VF penalty - making it the preferred alternative for legacy board reuse.

Availability

MBRF20L100CT is available at Aetrix Electronics and suitable for switching mode power supplies, DC/DC converters, and AC/DC adapters requiring stable component supply, consistent thermal performance, and automotive-qualifiable variants.

Supply support for MBRF20L100CT 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, serving industrial, computing, and automotive markets since 1979.

The MBRF20L100CT belongs to TSC's low-VF Schottky rectifier product line, engineered specifically for high-efficiency secondary-side rectification in compact, thermally constrained power supplies - emphasizing low conduction loss, surge robustness, and qualification-ready variants.

FAQ

What is the maximum junction temperature rating for MBRF20L100CT?

The MBRF20L100CT has a maximum junction temperature (TJ max) of +150°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet. This rating applies across the full operating current range and allows reliable use in sealed enclosures or under-hood automotive environments when paired with appropriate heatsinking. The device maintains specified electrical performance up to this limit, with forward voltage decreasing slightly as temperature rises - a characteristic behavior of Schottky diodes.

Is MBRF20L100CT pin-compatible with MBR20100CT?

Yes, MBRF20L100CT is pin-compatible with ON Semiconductor's MBR20100CT - both use the ITO-220AB package with identical pinout: Tab (Anode 1), Lead 1 (Anode 2), Lead 2 (Common Cathode). Mechanical dimensions, mounting hole position, and thermal pad layout match exactly. However, MBRF20L100CT delivers lower typical VF (0.72V vs. 0.82V max), offering measurable efficiency gain in high-current applications.

Does MBRF20L100CT have AEC-Q101 qualification?

The base MBRF20L100CT is not AEC-Q101 qualified; however, the MBRF20L100CTH variant - indicated by the "H" suffix in the ordering code - is fully AEC-Q101 qualified per Taiwan Semiconductor's documentation. This version undergoes extended temperature cycling, humidity testing, and mechanical shock validation required for automotive under-hood applications. Always verify the full part number suffix when sourcing for automotive use.

What is the forward voltage specification for MBRF20L100CT at 20A and 125°C?

Per the Taiwan Semiconductor datasheet, the MBRF20L100CT exhibits a typical forward voltage of 0.67V and a maximum of 0.75V at IF = 20A and TJ = 125°C. This low, temperature-stable VF - which decreases with rising junction temperature - is a key advantage of its Schottky architecture and contributes to reduced thermal runaway risk in high-power-density designs.

How is polarity marked on the MBRF20L100CT package?

The MBRF20L100CT uses standard ITO-220AB polarity marking: the cathode is identified by a wide white band adjacent to Lead 2 (the common cathode pin), while the anodes are on the tab and Lead 1. The device marking "MBRF20L100CT" appears on the front surface, and the date code (YWW format) and factory code (e.g., "F") are also laser-etched per the official package outline drawing - ensuring unambiguous orientation during manual or automated assembly.