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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Recent content by Sophia Zeng

  1. S

    Micro SMD PTC Thermistor - Resistor circuit design for heat control

    Try a PRG series PTC SMD resistor.The PRG series has high reliability, small changes in characteristics after installation, and long service life. This will help you reduce device size and improve performance.
  2. S

    What is this component?

    CR designator usually means diode. But according to the pictures,it looks like a TO-252 IC,maybe try to search FAIRCHIL MC7805CD or FQD3P50 3P50,and check if it is a replacement part.
  3. S

    Please Guide Me from Where I can Buy This product.

    You should provide more details, let us know the size of screen,and the length of tail,so that we can check if we can help you find a similar one.
  4. S

    Help identifying components.

    Maybe you can contact with the sales from Wayon,and check if they can get any samples for you. https://www.way-on.com/en_index.html
  5. S

    Help identifying components.

    2 should be a WAYON SMD PPTC or WAYON SMD fuse,attached are pictures for your reference.
  6. S

    KRK 10s sub cutting out at a certain volume

    1. check if it is because the capacity of the power supply decreases; 2.If the power amplifier is poor performance?
  7. S

    Brief PDF catalogs needed for PWM controller selection.

    Have you try to find it from Mouser or Digikey? Something like below: https://www.mouser.cn/c/semiconductors/power-management-ics/?type=PWM%20Controller
  8. S

    Product Sourcing Help

    Maybe you can try to buy it from Alibaba,I found below picture from website,not sure if it is the one you are looking for. The PCB size is 57X37X21mm,the cable is 20cm/7.87"(appr.)
  9. S

    Wireless charger set... where to buy ?

    Maybe you can find it from Alibaba,search by Wireless Charger Kit, Charge Adapter, Wireless Charging Stand Sets? Not sure if below link helps. https://www.alibaba.com/product-detail/New-Design-3-In-1-Qi_1600443366942.html?spm=a2700.galleryofferlist.normal_offer.d_title.57211200VWREDm&s=p
  10. S

    Which capacitor is this?

    It's a 220uF 35V chip-aluminum electrolytic capacitor,you can try to buy a substitute from Digikey or Mouser.
  11. S

    Reverse Mount Ambient Light Sensor Reverse Mount?

    I think there won't be a problem as long as you make sure the hole is bigger than the light sensor and the contacts can be rested properly on the pads. If you are not sure if the PCBA supplier can unstand your idea clearly,you can show them a sample for reference.
  12. S

    Via-in-Pad in PCB Design

    Thank you
  13. S

    General electronics is all much of a muchness

    Actually,something like this are always happened, not only in such “general analog hardware electronics and SMPS” companies.:)
  14. S

    120 vac Motion Detector Light Wanted?

    Maybe you can try to find a replacement from alibaba.com
  15. S

    Via-in-Pad in PCB Design

    It is for a BGA component.
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