Taiwan Semiconductor Corporation SFAF1008G

Overview

SFAF1008G from Taiwan Semiconductor is a 10 A, 600 V super fast rectifier diode in ITO-220AC package, featuring 1.700 V forward voltage at 10 A and 25°C, 35 ns reverse recovery time, and 140 pF junction capacitance - deployed in high-frequency switching mode power supplies and freewheeling paths.

For engineers reviewing the SFAF1008G datasheet, SFAF1008G pinout, SFAF1008G application, or SFAF1008G equivalent, key selection criteria include peak reverse voltage rating (600 V), surge current capability (150 A), thermal resistance (4°C/W), AEC-Q101 qualification status, and ITO-220AC mechanical compatibility with heatsink mounting.

Technical Context

The SFAF1008G is a single-die, glass-passivated super fast recovery rectifier optimized for high-efficiency DC–DC conversion and switching inverters. Its 600 V V_RRM, 150 A I_FSM, and 35 ns t_rr support operation in hard-switched topologies up to several hundred kHz.

Thermal performance is defined by a 4°C/W junction-to-case resistance and 150°C maximum junction temperature, enabling stable conduction under continuous 10 A load with appropriate heatsinking. The device meets UL 94V-0 flammability and JESD201 Class 2 whisker requirements.

Key Specifications

Pinout & Package

Package: ITO-220AC - insulated thermally enhanced TO-220 variant with 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 STTH10R06DJF and VS-10EWH06-M3, the SFAF1008G delivers balanced performance at 35 ns t_rr and 1.700 V V_F, with AEC-Q101 availability in GH variant - making it optimal for cost-sensitive automotive and industrial switching power supplies requiring verified reliability and thermal robustness.

Availability

SFAF1008G is available at Aetrix Electronics and suitable for DC–DC converters, switching inverters, and automotive onboard chargers requiring stable component supply, long-lifecycle support, and AEC-Q101-compliant variants.

Supply support for SFAF1008G 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 SFAF1001G–SFAF1008G series targets high-efficiency, high-reliability power conversion - engineered specifically for switching-mode power supplies, motor drives, and EV infrastructure where fast recovery, thermal stability, and qualification rigor are mandatory.

FAQ

What is the maximum junction temperature rating for the SFAF1008G?

The SFAF1008G has a maximum junction temperature (T_J) of +150°C, verified across its full operating range. This rating enables reliable operation in enclosed industrial enclosures or automotive under-hood environments when paired with a heatsink achieving ≤4°C/W total thermal resistance. Derating curves in the official datasheet define allowable average current versus case temperature for SFAF1008G.

Is the SFAF1008G AEC-Q101 qualified?

Yes - the SFAF1008G is available in an AEC-Q101 qualified version designated SFAF1008GH. The "H" suffix indicates full qualification per AEC-Q101 Rev D, including stress testing for temperature cycling, high-temperature operating life, and unbiased highly accelerated stress test. Standard SFAF1008G is not qualified unless ordered with the H suffix.

What is the reverse recovery time (t_rr) specification for the SFAF1008G?

The SFAF1008G has a typical reverse recovery time (t_rr) of 35 ns, measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A conditions. This value is confirmed in the Electrical Specifications table on page 2 of the H2105 datasheet and applies directly to the SFAF1008G variant - not interpolated from adjacent family members.

Does the SFAF1008G have a cathode-connected metal tab?

Yes - the metal tab of the SFAF1008G in ITO-220AC package is electrically connected to the cathode terminal. This configuration requires electrical isolation (e.g., mica washer or insulating pad) when mounting to a grounded heatsink. The polarity marking on the device body confirms cathode orientation, and the tab must be treated as a live circuit node in layout.

What is the forward voltage drop of the SFAF1008G at 10 A and 25°C?

The forward voltage drop (V_F) of the SFAF1008G is 1.700 V maximum at 10 A and 25°C, as specified in the Electrical Specifications table. This value reflects worst-case conduction loss under pulse test conditions (PW = 0.3 ms), and actual V_F decreases slightly at elevated junction temperatures due to semiconductor physics.