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SMusc.1
SMusc.1
Associate III
March 5, 2024
Question

SMD red small Devices

  • March 5, 2024
  • 6 replies
  • 2476 views

Does someones know what is the red devices in the board attached?

This topic has been closed for replies.

6 replies

TDK
TDK
March 5, 2024

Those are spots of glue to keep the resistors from moving around when they are placing them. They serve no electrical purpose.

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    Andrew Neil
    Andrew Neil
    Super User
    March 5, 2024
    @TDK wrote:

    Those are spots of glue to keep the resistors from moving around .

    doesn't seem to have worked in this case!

    AndrewNeil_0-1709654430460.jpeg

     

    A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
    TDK
    TDK
    March 5, 2024

    > doesn't seem to have worked in this case!

    Likely the part was intentionally not loaded and the glue stencil wasn't modified. Also note solder paste on those pads--same reason.

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