S4040NQ - Sxx40x Series Series

Series: Sxx40x Series
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Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

40 Amp bi-directional solid state switch series is designed for AC switching and phase control applications such as motor speed and temperature modulation controls, lighting controls, and static switching relays.

Alternistor type devices only operate in quadrants I, II, & III and are used in circuits requiring high dv/dt capability.

Features & Benefits
  • RoHS compliant
  • Glass - passivated junctions
  • Voltage capability up to 1000V
  • Surge capability up to 400A
  • Electrically isolated K & J -Packages are UL recognized for 2500Vrms


    • Applications
    Excellent for AC switching and phase control applications such as heating, lighting, and motor speed controls.

    Typical applications are AC solid-state switches, industrial power tools, exercise equipment, white goods and commercial appliances.

    Alternistor Triacs (no snubber required) are used in applications with extremely inductive loads requiring highest commutation performance.

    Internally constructed isolated packages are offered for ease of heat sinking with highest isolation voltage.
    Check Stock
    Property (Mouseover for details) Value
    di/dt @ 110°C (A/μs) 150
    dv/dt @ 125°C (V/μs) 550
    IDRM@VDRM 125°C (mA) 6
    IDRM@VDRM 25°C (mA) 0.02
    Max Gate Trigger Current (IGTMAX) (mA) 35
    On-State Current (Itrms) (A) 40
    Non-Repetitive Surge Current (ITSM 60Hz) (A) 500
    Gate Trigger Voltage MAX 1.3
    tgt (μs) 1.5
    Repetitive Peak Off-State Voltage (VDRM) (V) 400
    VTM (V) 1.8
    Partner ECAD Models S4040NQ
    Turn-off Time (µs) 15

    pdficon Discrete Thyristors Sxx40x Series Datasheet

    Excellent unidirectional switches for phase control applications such as heating and motor speed controls...
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