SMD red small Devices

[SMusc.1]

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

[TDK]

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

[Andrew Neil]

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@TDK wrote:

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

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doesn't seem to have worked in this case!

[TDK]

> 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.

[SMusc.1]

so much tks

[Tesla DeLorean]

Assuming that's a No-Fit. It's also on the back of the board, so also stops them falling off, downward. Can see it behind the ones that were fitted.

Might be an applicator rather than screened on. Would expect solder paste first then, dot application of epoxy, pick-n-place, and cure.

[Andrew Neil]

@SMusc.1 - don't forget to mark the solution!

BTW: If you look closely at the other components, you can see the glue under them, too: