Taiwan Semiconductor Corporation MBRF20150CT

Overview

MBRF20150CT from Taiwan Semiconductor is a dual-die Schottky barrier rectifier in ITO-220AB package, rated for 20 A average forward current, 150 V repetitive peak reverse voltage, and 150 A surge current. It delivers low forward voltage (1.05 V max at 20 A, 25°C) and low reverse leakage (2 mA max at 125°C), enabling high-efficiency operation in DC–DC converters and industrial SMPS.

For engineers reviewing the MBRF20150CT datasheet, MBRF20150CT pinout, MBRF20150CT application, or MBRF20150CT equivalent, key selection criteria include thermal resistance (3.5 °C/W junction-to-case), AEC-Q101 qualification eligibility, guard-ring overvoltage protection, and compatibility with high-frequency switching topologies requiring fast recovery and low conduction loss.

Technical Context

The MBRF20150CT integrates two independent Schottky diodes in a common-cathode configuration within a single ITO-220AB thermally enhanced package. Its 150 V V_RRM rating supports mid-voltage industrial and telecom power rails, while its 3.5 °C/W R_θJC enables direct heatsink mounting without auxiliary thermal interface materials under 20 A continuous load.

Designed for high-frequency switching applications, it exhibits negligible reverse recovery charge (Q_rr not specified but inherent to Schottky architecture), dv/dt capability of 10,000 V/µs, and stable performance across –55°C to +150°C junction temperature range - critical for under-hood automotive auxiliary supplies and ruggedized industrial adapters.

Key Specifications

Pinout & Package

Package: ITO-220AB - thermally optimized plastic package with exposed metal tab for direct heatsink attachment; matte tin-plated leads compliant with J-STD-002 solderability; UL 94V-0 molding compound; polarity marked on case.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MBRF20150CT, VS-20CPH15 trades higher conduction loss for broader distributor availability, while MBR20150CT offers identical performance with different compliance profile - making MBRF20150CT the preferred choice for automotive-qualified or halogen-free industrial designs.

Availability

MBRF20150CT is available at Aetrix Electronics and suitable for industrial SMPS, telecom DC–DC converters, and automotive auxiliary power supplies requiring stable component supply, long-lifecycle support, and traceable sourcing.

Supply support for MBRF20150CT 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 industrial, computing, and automotive markets since 1979.

The MBRF20xxCT series was developed to deliver high-reliability, thermally robust Schottky rectifiers for high-frequency switching power supplies where low V_F, low I_R, and rugged surge capability are essential.

FAQ

What is the maximum junction temperature rating for MBRF20150CT?

The MBRF20150CT has a maximum junction temperature (T_J) of +150°C and a minimum of –55°C. This wide operating range allows deployment in harsh environments such as industrial motor drives and automotive under-hood applications. Thermal derating begins above 25°C ambient, and the device maintains full 20 A current capability up to approximately 95°C case temperature when properly heatsinked. The MBRF20150CT's 3.5 °C/W R_θJC enables predictable thermal design without iterative simulation.

Is MBRF20150CT pin-compatible with other parts in the MBRF20xxCT family?

Yes, all MBRF20xxCT variants - including MBRF2035CT through MBRF20200CT - share identical ITO-220AB packaging, pinout (common cathode tab, two anode leads), and mechanical footprint. This allows board-level voltage scalability: designers can select 35 V to 200 V ratings without layout changes. The MBRF20150CT specifically uses the same lead frame, die attach, and marking orientation as MBRF20100CT and MBRF20200CT, ensuring drop-in replacement across the family.

Does MBRF20150CT have AEC-Q101 qualification?

The base MBRF20150CT is not AEC-Q101 qualified; however, the variant MBRF20150CTH is explicitly qualified per AEC-Q101 Rev D for stress testing including HTGB, HTRB, and temperature cycling. This qualification applies only to units ordered with the "H" suffix and marked accordingly. For automotive applications requiring qualification evidence, MBRF20150CTH must be specified - the MBRF20150CT itself carries no AEC-Q101 documentation or test reports.

What is the typical forward voltage of MBRF20150CT at 20 A and 125°C?

The MBRF20150CT exhibits a maximum forward voltage of 0.95 V at 20 A and 125°C junction temperature, with typical performance near 0.85 V under those conditions. This low V_F at elevated temperature directly improves system efficiency in thermally stressed environments, such as enclosed power supplies or high-ambient-temperature deployments. The MBRF20150CT's V_F remains stable across temperature due to its Schottky architecture - unlike silicon rectifiers, it shows no abrupt increase near T_J max.

How does the guard ring in MBRF20150CT improve reliability?

The guard ring in MBRF20150CT mitigates edge avalanche breakdown during high dv/dt transients, such as those occurring in zero-voltage-switching (ZVS) circuits or during line surges. By controlling electric field distribution at the silicon periphery, it prevents localized hot spots that could cause premature failure. This feature is confirmed in TSC's characterization curves and is especially valuable in MBRF20150CT applications like LLC resonant converters where voltage slew rates exceed 5,000 V/µs - enhancing long-term reliability without requiring external snubbers.