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Patented Technology
  • Core Technology
    • AC/DC IC
  • PSR
  • SSR
  • PFC
    • LED Lighting IC
  • LED Driver
    • Combo IC
  • Combo
    • AC/DC IC（DoE VI ）
  • SCR
  • PSR
  • SSR
  • PCR
    • Motor Driver IC
  • Motor Driver

    • SiFirst Core Technology

    Core Technology

    PSR Controller

    Product<

    Topology

    Driving Mode

    Standby Power

    Max Power

    DoE VI

    Package
    SF5920S NC-Cap/PSRTM External MOS 70mw 25w - SOT23-5
    SF5922S NC-Cap/PSRTM 1A MOS Inside 70mw 6w - SOP8
    SF5926S NC-Cap/PSRTM 1A MOS Inside 70mw 9w - DIP8
    SF6010N NC-Cap/PSRTM External BJT 70mw 6w - SOT23-5/6
    SF6072 NC-Cap/PSRTM 1A BJT Inside 70mw 4.5w - SOIC-7
    SF5928S NC-Cap/PSRTM 2A MOS Inside 90mw 15w - DIP8/DIP7
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    SSR Controller

    Product

    Topology

    Driving Mode

    HV-mW™

    Standby Power

    Max Power

    DoE VI

    Package
    SF1530 Flyback External MOS - 300mw 50w - SOT23-6/DIP8
    SF1531S Flyback/n-BalanceTM External MOS - 300mw 50w - SOT23-6/DIP8
    SF1560 Flyback External MOS - 300mw 150w - SOP8/DIP-8
    SF1565 Flyback External MOS - 300mw 150w - SOP8
    SF1585 Flyback/n-BanlanceTM External MOS - 300mw 100w - SOT23-6
    SF5545 Flyback/n-BanlanceTM External MOS - 100mw 50w - SOT23-6
    SF1538 Flyback/n-BanlanceTM 2A MOS Inside - 300mw 15w - DIP8
    SF1533 Flyback/n-BanlanceTM 1A MOS Inside - 300mw 6w - SOP8
    SF1539 Flyback/n-BanlanceTM 2A MOS Inside - 300mw 15w - DIP8
    SF1539HT Flyback/n-BanlanceTM 2A MOS Inside - 300mw 15w - DIP8
    SF1546 Flyback/n-BanlanceTM 1A MOS Inside - 300mw 9w - DIP8
    SF5580 Flyback/n-BanlanceTM Flyback/n-Banlance? √ 50mw 150w - SOP8
    SF5590 Flyback/n-BanlanceTM External MOS √ 50mw 150w - SOP8
    SF1539W Flyback/n-BanlanceTM 2A MOS Inside - 300mw 15w - DIP8
    SF1548 Flyback/n-BanlanceTM 2A MOS Inside - 300mw 15w - DIP8
    SF1549 Flyback/n-BanlanceTM 4A MOS Inside - 300mw 18w - DIP8
    SF5565M Flyback/n-BanlanceTM External MOS - 100mw 50w - SOT23-6
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    PFC Controller

    Product

    Topology

    Driving Mode

    Output Current

    Max Power

    DoE VI

    Package
    SF6562 TM mode External MOS 500w Yes SOP8/DIP8
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    LED Driver

    Product

    Topology

    CC Accuracy

    Max Power

    Dimming

    PFC

    Instant Light

    Max current

    Package
    SFL100 Secondary Side CC & CV ±2% - - - - - SOT23-6
    SFL320 Single-Stage PFC ±3% 60w - Built-in - - SOP8
    SFL330 Single-Stage PFC ±3% 60w - Built-in - - SOP8
    SFL678 NC-Cap/PSRTM ±3% 25w Analog/PWM - - - SOT23-6
    SFL600 NC-Aux/PSRTM ±4% 3.5w - - YES - TO-92
    SFL710 super-PFC/BuckTM ±4% 30w - Built-in - - SOT23-6
    SFL950 super-PFC/PSRTM ±4% 30w - Built-in - - SOT23-6
    SFL980 super-PFC/PSRTM 30w - Built-in YES - SOP8
    SFL900B super-PFC/PSRTM ±4% 60w - Built-in - - SOP8/DIP8
    SFL530 NC-Aux/QR-BulkTM ±5% 4.5w - - YES - TO-92
    SFL830 Boost-PFC/PSR ComboTM ±3% 60w - Built-in - - SOP8
    SFL850 Boost-PFC/PSR ComboTM ±3% 60w - Built-in - - SOP8
    SFL580 NC-Aux/QR-BuckTM ±4% - PWM - YES - DIP8
    SFL900C super-PFC/PSRTM ±4% 60w - Built-in - - SOP8/DIP8
    SFL670 super-QR/PSRTM ±4% - - - - - SOT23-6
    SFL960 super-PFC/BuckTM ±4% 100W - - - - SOT23-6
    SFL636 super-QR/PSRTM ±5% 17W - - - - SOP7
    SFL952 super-PFC/PSRTM ±4% - - - - - SOP7
    SFL958 super-PFC/PSRTM ±4% - - - - - DIP7
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    Combo IC

    Product

    Topology

    Tipycal

    Package
    SFL830 Boost-PFC/PSR ComboTM <60w SOP8
    SFL850 Boost-PFC/Buck ComboTM <60w SOP8
    Entries Per Page
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    SCR

    Product

    Topology

    Driving Mode

    Standby Power

    Max Power

    DoE VI

    Package
    SF7301 Super-SRTM External MOS - √ SOP8
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    PCR

    Product

    Topology

    Driving Mode

    DoE VI

    Package
    SF7201 Super-SRTM MOS inside √ SOP8
    Entries Per Page
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    PSR Controller

    Product

    Topology

    Driving Mode

    Standby Power

    Max Power

    DoE VI

    Package
    SF6778S supper-QR/PSRTM 2A MOS Inside 70mw 15w √ DIP8
    SF6020P NC-Cap/PSR-||TM External BJT 75mw 6w √ SOT23-5
    SF6022 NC-Cap/PSR-||TM 700V BJT Inside 75mw 5w √ SOP8/SOP-7
    SF6771S super-QR/PSRTM External MOS 75mw 25w √ SOT23-6
    SF6761S super-QR/PSRTM External MOS 75mw 25w √ SOT23-6
    SF6010R super-QR/PSRTM External BJT 70mw 6W √ SOT23-5
    SF6772S super-QR/PSRTM MOS Inside 70mw 6w √ SOP8
    SF6021 NC-Cap/PSRTM BJT Inside 75mw 3W √ SOP7
    SF6773V super-QR/PSRTM MOS Inside 70mw 13W √ SOP7
    SF5930S NC-Cap/PSRTM External MOS 70mw 25w √ SOT23-5
    SF5938S NC-Cap/PSR-||TM MOS Inside 70mw 13W √ DIP8
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    SSR Controller

    Product

    Topology

    Driving Mode

    Standby Power

    Max Power

    DoE VI

    Package
    SF5773 QR-||TM External MOS 100mw 50w √ SOT23-6
    SF5877 QR-||TM External MOS 50mw 150w √ DIP8
    SF5879 QR-||TM 2A MOS Inside 30mw 15w √ DIP8
    SF5887 QR-||TM External MOS 100mw 70w √ SOP8
    SF5873 QR-||TM External MOS 50mw 50w √ SOP8
    SF5897 QR-||TM External MOS 150mw 150w √ SOP8
    SF5539 Flyback/n-BanlanceTM MOS inside 75mw 15W √ DIP8
    SF5539H Flyback/n-BanlanceTM MOS Inside 75mw 15W √ DIP8
    SF5533 Flyback/n-BanlanceTM External MOS 75mw 65W √ SOT23-6
    SF5778 QR-||TM External MOS 100mw 50w √ DIP7
    SF5773S QR-||TM External MOS 100mw 50w √ SOT23-6
    SF5533H Flyback/n-BanlanceTM External MOS 75mw 65W √ SOT23-6/DIP-8
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    Motor Driver IC

    Product

    Supply Voltage

    Output Current

    Package
    AH277A 30~20V 300mA TO-94
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