Taiwan Semiconductor Corporation SFF2003G

Overview

SFF2003G from Taiwan Semiconductor is a 150 V, 20 A super fast recovery rectifier diode in ITO-220AB package, featuring 35 ns reverse recovery time and 0.975 V forward voltage at 10 A/25°C, used for freewheeling and DC–DC converter output stages.

For engineers reviewing the SFF2003G datasheet, SFF2003G pinout, SFF2003G application, or SFF2003G equivalent, key selection criteria include peak reverse voltage (150 V), surge current rating (150 A), thermal resistance (2.5 °C/W), junction temperature range (−55 to +150 °C), and AEC-Q101 qualification availability.

Technical Context

The SFF2003G integrates dual die configuration in a single ITO-220AB package with isolated cathodes, enabling independent use of each diode in bridge or dual-output topologies. Its super fast recovery (trr ≤ 35 ns) and low VF support high-frequency switching up to 100 kHz in SMPS designs.

Thermal performance is defined by R_θJC = 2.5 °C/W, allowing 20 A continuous conduction with case temperature ≤ 105 °C. The device meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance requirements.

Key Specifications

Pinout & Package

Package: ITO-220AB - Insulated TO-220 variant with electrically isolated tab, matte tin-plated leads, 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 super fast rectifier applications.

Compared with STTH2003CW and MUR2015CT, the SFF2003G uniquely provides dual independent diodes with electrically isolated tab in ITO-220AB, enabling flexible layout in space-constrained automotive and industrial power modules where thermal and electrical isolation are critical.

Availability

SFF2003G is available at Aetrix Electronics and suitable for DC–DC converters, switching inverters, and automotive auxiliary power supplies requiring stable component supply, long-term lifecycle support, and AEC-Q101-qualified variants.

Supply support for SFF2003G 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 global industrial, automotive, and consumer markets since 1979.

The SFF2003G belongs to TSC's Super Fast Rectifier family, engineered specifically for high-efficiency, high-reliability secondary-side rectification in compact, thermally demanding power conversion systems.

FAQ

What is the maximum junction temperature rating for the SFF2003G?

The SFF2003G has a maximum junction temperature (T_J) of +150 °C and a minimum of −55 °C. This wide operating range supports deployment in under-hood automotive environments and industrial enclosures with elevated ambient temperatures. Derating curves in the datasheet define allowable forward current versus case temperature, ensuring safe operation within this thermal envelope. The SFF2003G maintains specified electrical parameters across its full rated junction temperature range.

Is the SFF2003G pin-compatible with other devices in the SFF200xG series?

Yes, all SFF2001G through SFF2008G share identical ITO-220AB package dimensions, pinout, and terminal assignments. Only the rated V_RRM (50 V to 600 V) and corresponding forward voltage differ between variants. This allows drop-in replacement across the series during design iteration or voltage-scaling adjustments without PCB layout changes. The SFF2003G retains full mechanical and thermal compatibility with its siblings.

Does the SFF2003G have AEC-Q101 qualification?

The base SFF2003G is not AEC-Q101 qualified, but the SFF2003GH variant is explicitly qualified per AEC-Q101. The "H" suffix denotes automotive-grade screening including HTOL, temperature cycling, and mechanical shock testing. Designers targeting automotive applications must specify SFF2003GH to meet functional safety and reliability requirements. Both variants share identical electrical and thermal specifications except for qualification status.

What is the meaning of the "G" suffix in SFF2003G?

The "G" suffix in SFF2003G indicates halogen-free packaging per IEC 61249-2-21 and RoHS compliance. It denotes green compound molding material and matte tin-plated leads meeting J-STD-002 solderability requirements. This suffix does not affect electrical performance but confirms environmental compliance for export-controlled and eco-sensitive applications. The SFF2003G is fully interchangeable with non-G variants in terms of function and form, provided halogen-free content is not mandated.

How is thermal management handled for the SFF2003G in high-current operation?

The SFF2003G uses an electrically isolated tab in the ITO-220AB package, allowing direct mounting to a heatsink without insulation hardware when cathode potential matches heatsink ground. Its R_θJC of 2.5 °C/W enables 20 A continuous conduction with case temperature ≤ 105 °C. For higher ambient or power density, forced air or larger heatsinks are recommended. Thermal derating curves in the datasheet guide safe current limits based on measured case temperature.