Taiwan Semiconductor Corporation SFAF1002G

Overview

SFAF1002G from Taiwan Semiconductor is a 10 A, 100 V repetitive peak reverse voltage (V_RRM) super fast rectifier diode in ITO-220AC package, featuring 35 ns reverse recovery time (t_rr), 0.975 V forward voltage at 10 A and 25 °C, and 4 °C/W junction-to-case thermal resistance - used for freewheeling and switching-mode DC/DC converter output stages.

For engineers reviewing the SFAF1002G datasheet, SFAF1002G pinout, SFAF1002G application, or SFAF1002G equivalent, key selection factors include its AEC-Q101-qualified variant option (SFAF1002GH), low VF under high-current pulse conditions, UL recognition (E-326243), and compatibility with J-STD-002 solderable matte tin leads.

Technical Context

This super fast rectifier uses a glass passivated silicon junction to achieve high reliability and surge robustness, with t_rr = 35 ns enabling efficient operation in high-frequency switching topologies up to several hundred kHz. Its single-die configuration and ITO-220AC thermally optimized package support continuous 10 A conduction and 150 A non-repetitive surge capability.

The device operates across –55 °C to +150 °C junction temperature range, maintains IR ≤ 10 µA at 25 °C and ≤ 400 µA at 100 °C, and exhibits CJ = 170 pF at 1 MHz / 4.0 V - critical for minimizing switching losses and EMI in flyback and forward converters.

Key Specifications

Pinout & Package

ITO-220AC package with 3-terminal configuration: anode, cathode, and metal tab (cathode-connected). The metal tab serves as both mechanical mounting surface and thermal path to heatsink. Leads are matte tin-plated per J-STD-002 for reliable solderability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH10R06DJF and MUR1020CT, the SFAF1002G offers optimal balance of 100 V rating, 35 ns recovery, and ITO-220AC thermal performance for cost-sensitive 24–48 V industrial converters - while maintaining AEC-Q101 availability and UL recognition.

Availability

SFAF1002G is available at Aetrix Electronics and suitable for DC/DC converters, switching inverters, and freewheeling applications requiring stable component supply, automotive-grade variants, and UL-recognized discrete power components.

Supply support for SFAF1002G 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 SFAF1002G belongs to TSC's Super Fast Rectifier family, engineered for high-efficiency, high-reliability power conversion in space-constrained and thermally demanding environments - especially where low V_F, fast t_rr, and robust surge capability are essential.

FAQ

What is the maximum junction temperature rating for the SFAF1002G?

The SFAF1002G has a maximum junction temperature (T_J) of +150 °C, with operational range from –55 °C to +150 °C. This rating enables use in high-ambient environments such as enclosed industrial power supplies or under-hood automotive modules when properly heatsinked. Derating curves in the datasheet define allowable I_F versus case temperature, and the 4 °C/W R_θJC supports thermal design down to 110 °C case temperature at full 10 A load.

Is the SFAF1002G RoHS and halogen-free compliant?

Yes, the SFAF1002G is RoHS compliant and halogen-free per IEC 61249-2-21. The molding compound contains no brominated flame retardants or chlorine-based additives, and all terminations meet EU RoHS Directive 2011/65/EU limits for lead, cadmium, mercury, hexavalent chromium, PBB, and PBDE. This compliance is verified in TSC's material declarations and applies to both standard (SFAF1002G) and AEC-Q101-qualified (SFAF1002GH) versions.

Does the SFAF1002G have UL recognition?

Yes, the SFAF1002G carries UL Recognition under File # E-326243. This certification confirms compliance with UL 60747-4 for discrete semiconductors, covering flammability (UL 94V-0), electrical insulation, and construction integrity. UL recognition applies to the ITO-220AC package and supports end-equipment safety certifications in North America and other regions accepting UL standards.

What is the reverse recovery time (t_rr) specification for the SFAF1002G?

The SFAF1002G has a maximum reverse recovery time (t_rr) of 35 ns, measured at I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A. This value is confirmed across the full operating temperature range and supports high-frequency switching in DC/DC converters up to 500 kHz. The fast t_rr directly reduces switching losses and voltage overshoot during diode turn-off, improving overall system efficiency and EMI behavior.

How does the SFAF1002G differ from the SFAF1001G and SFAF1003G?

The SFAF1002G is part of the SFAF1001G–SFAF1008G series differentiated by V_RRM: SFAF1001G = 50 V, SFAF1002G = 100 V, SFAF1003G = 150 V. All share identical I_F = 10 A, t_rr = 35 ns, R_θJC = 4 °C/W, and ITO-220AC package. Forward voltage is 0.975 V for SFAF1001G–SFAF1004G (including SFAF1002G), while higher-voltage variants exhibit increased V_F due to wider depletion layers.