Taiwan Semiconductor Corporation SFA1004G

Overview

SFA1004G from Taiwan Semiconductor is a single-die super fast rectifier in TO-220AC package, rated for 10 A average forward current (IF), 200 V repetitive peak reverse voltage (VRRM), and 125 A non-repetitive surge current (IFSM), used in high-frequency switching power supplies and freewheeling paths.

For engineers reviewing the SFA1004G datasheet, SFA1004G pinout, SFA1004G application, or SFA1004G equivalent, key selection factors include its 35 ns reverse recovery time (trr), 0.975 V forward voltage at 10 A/25°C, 3.5 °C/W junction-to-case thermal resistance, and AEC-Q101 qualification availability in variant SFA1004GH.

Technical Context

The SFA1004G employs a planar epitaxial silicon structure optimized for fast recovery with low stored charge, enabling efficient operation in DC–DC converters and SMPS operating above 20 kHz. Its 200 V VRRM rating targets mid-voltage industrial and automotive auxiliary power stages.

Thermal performance is defined by R_θJC = 3.5 °C/W and TJ max = 150 °C, supporting conduction-limited designs up to 10 A continuous with appropriate heatsinking. Junction capacitance is 70 pF at 1 MHz / 4.0 V, consistent with fast-switching requirements.

Key Specifications

Pinout & Package

Package: TO-220AC - Three-terminal, through-hole, single-die rectifier package with isolated tab (cathode-connected tab), matte tin-plated leads, 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 super fast rectifier applications.

Compared with STTH10R06DJF and VS-10EWH06-M3, the SFA1004G delivers optimal balance of 200 V rating, 0.975 V VF, and 35 ns trr for mid-voltage SMPS where higher VRRM adds cost and lower VRRM risks failure-making it the most fit-for-purpose choice in 150–250 V reverse applications.

Availability

SFA1004G is available at Aetrix Electronics and suitable for DC–DC converters, switching inverters, and freewheeling applications requiring stable component supply, long-term manufacturability, and RoHS/halogen-free compliance.

Supply support for SFA1004G 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 SFA1004G belongs to TSC's Super Fast Rectifier family, engineered specifically for high-frequency switching power conversion where low trr, stable VF, and rugged surge capability are essential for reliability in harsh thermal and electrical environments.

FAQ

What is the maximum repetitive peak reverse voltage (VRRM) for SFA1004G?

The SFA1004G has a VRRM rating of 200 V, verified per Taiwan Semiconductor's K2103 datasheet. This value defines the highest instantaneous reverse voltage the device can block repeatedly without breakdown. It is fixed for this part number and distinct from other members of the SFA1001G–SFA1008G series, which span 50 V to 600 V. Designers must ensure circuit peak reverse stress remains below 200 V with appropriate safety margin.

Is SFA1004G pin-compatible with SFA1004GH?

Yes, the SFA1004G and SFA1004GH share identical TO-220AC package, pinout, and electrical specifications. The "H" suffix denotes AEC-Q101 qualification, added via enhanced process controls and test screening-not physical or connection changes. Both parts mount identically, use the same footprint, and require no PCB revision when upgrading to automotive-grade reliability.

What is the forward voltage (VF) of SFA1004G under typical operating conditions?

The SFA1004G exhibits a maximum forward voltage of 0.975 V at IF = 10 A and TJ = 25°C, as specified in the electrical characteristics table. This value is measured under pulsed conditions (PW = 0.3 ms) to avoid self-heating. At elevated junction temperatures (e.g., 100°C), VF decreases slightly (~0.85 V), improving conduction efficiency but requiring thermal design validation.

Does SFA1004G have a thermally isolated package?

No, the SFA1004G uses a standard TO-220AC package where the metal tab is electrically connected to the cathode terminal. There is no internal insulation between the die and tab. When mounting to a heatsink, electrical isolation (e.g., mica washer or silicone pad) is required if the heatsink is not referenced to cathode potential-otherwise, short-circuit or ground-loop risks arise.

What is the junction-to-case thermal resistance (R_θJC) of SFA1004G?

The SFA1004G has a typical junction-to-case thermal resistance of 3.5 °C/W, measured from die junction to the center of the cathode tab surface. This value is critical for calculating maximum allowable power dissipation at a given case temperature and ensures predictable thermal performance when mounted with proper torque (≤0.56 N·m) and thermal interface material.