Dear customers, due to the implementation of the GDPR policy in Europe, UTSOURCE has also made adjustment accordingly to meet the policy requirements. Please read the new privacy policy carefully and this window will no longer pop up after you accept it.

I agree all UTSOURCE Terms & Conditions,Privacy Statement
Agree Later Submit

Stock Status: 114121


US $0.98
Add to Cart


  • Encapsulation: SOP8
  • Brand: Fairchild
  • DateCode: 1035
  • ≥1: US $0.98102 US $0.88292
  • ≥10: US $0.83201 US $0.74880
  • ≥100: US $0.78233 US $0.70410


We provide high quality products, thoughtful service and after sale guarantee

  • image

    We have rich products, can meet your various needs.

  • image

    Minimum order quantity starts from 1pcs.

  • image

    Lowest international shipping fee starts from US$2.00(Registered Mail)

  • image

    60 days quality guarantee for all products

Rich inventory, you can find all the electronic components of the world's major brands

Alternate Text

Variety of payment methods

Alternate Text

Variety of logistics options, fast and cheap

  • USA / Canada / Mexico Europe Australia / New Zealand Asia
  • image $ 20.00 $ 25.00 $ 22.00~ 25.00 $ 18.00~ 22.00
  • image $ 2.00 $ 4.00 $ 4.00 $ 4.00

Free Fedex - order over $69.9/ $99.9

Free Post - order over $19.9

Utsource FBU service

Utsource is a global electronic components online service platform, where many outstanding suppliers are gathered. Utsource provide the FBU (Fulfillment by Utsource) service, it is an integrated service for SME(Small and medium enterprises) users. Features: high efficiency, high speed, safety and convenience.

  • High Efficiency
  • High Speed
  • Safety
  • Convenience

Product Details SG6742HR

1. Description

> he highly integrated SG6742 series of PWM controllersprovides several features to enhance the performance offlyback converters.To minimize standby power consumption, a proprietarygreen-mode function provides off-time modulation tolinearly decrease the switching frequency at light-loadconditions. To avoid acoustic-noise problems, the minimumPWM frequency is set above 22KHz. This green-modefunction enables the power supply to meet internationalpower conservation requirements. With the internal high-voltage startup circuitry, the power loss due to bleedingresistors is also eliminated. To further reduce powerconsumption, SG6742 is manufactured using the BiCMOSprocess, which allows an operating current of only 2.7mA.Built-in synchronized slope compensation achieves stablepeak-current-mode control. The proprietary external linecompensation ensures a constant output-power limit over awide AC input voltage range, from 90VACto 264VAC.SG6742 provides many protection functions. In addition tocycle-by-cycle current limiting, the internal open-loopprotection circuit ensures safety should an open-loop oroutput short-circuit failure occur.


2. Features 

> High-Voltage Startup

> Low Operating Current: 2.7mA

> Linearly Decreasing PWM Frequency to 22KHz

> Frequency Hopping to Reduce EMI Emission

> Fixed PWM Frequency:

> ML and MR are 65KHz.

> HL and HR are 100KHz.

Reviews More>>

  • Alternate Text

    Thank you very much, the order was delivered very well, very good company, the order arrived at the appointed time and in good condition, from already thank you very much.
    I will provide some pictures of the item purchased.



  • Alternate Text

    Many, I got everything.Very good salesman.




  • Alternate Text

    Thanks for your feedback!



  • Alternate Text

    Excellent product and seller. This is the only place I buy my electronic products.

    United States


  • Alternate Text

    Best !!!



Payment Method

International payment method

  • Paypal
    Paypal US $0.00
  • visa
    Credit Card US $0.00
  • Amex
    Amex US $0.00
  • Wire Transfer
    Wire Transfer charge US $15.00 banking fee.
  • Moneygram
    Moneygram US $0.00
  • Western Union
    Western Union US $0.00

European payment method

  • sofort
    Sofort US $0.00
  • eps
    Eps US $0.00
  • sepa
    Sepa US $0.00
  • onlinebetalen
    onlinebetalen US $0.00
  • bancontact
    Bancontact US $0.00
  • mybank
    Mybank US $0.00
  • yandex
    YandexMoney US $0.00
  • qiwi
    QIWI US $0.00
  • WebMoney
    WebMoney US $0.00
  • dotpay
    Dotpay US $0.00
  • p24
    P24 US $0.00
  • payu
    Payu US $0.00
  • Turkish Credit Bank Card
    Turkish Credit Bank Card US $0.00

America/Asia payment method

  • Boletol
    Boletol US $0.00
  • Itau
    Itau US $0.00
  • OXXO
    OXXO US $0.00
  • banamex
    Banamex US $0.00
  • bancomer
    Bancomer US $0.00
  • santander
    Santander US $0.00
  • spei
    Spei US $0.00
  • Paytm
    Paytm US $0.00
  • visa
  • visa


  • Step1:Product

  • Step2:Casing drivepipe

  • Step3:Anti-static bag

  • Step4:Packaging boxes

  • Step5:bar-code shipping tag

  • Toll-Free Call
  • +91- 80 - 41716331 image India
  • (888) 2912842 ‬ imageimage USA & Canada
  • (800) 4610326 image Mexico
  • (Time in New York) 9:00 AM-17:00 PM
  • (Call us in English, Spanish, French)
service support