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What is this Soft SMD Standoff?

Discussion in 'Datasheets, Manuals and Component Identification' started by Bruce Chou, Jan 23, 2018.

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  1. Bruce Chou

    Bruce Chou

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    Jan 23, 2018
    I'm looking for a soft standoff that can be reflow soldered on the PCB, like the one in the picture below. Unfortunately there are no markings and I have no idea what this part is. Has anyone seen this before and knows a place that makes this part?

    upload_2018-1-22_17-15-57.png
    Side view Top view
     
  2. Harald Kapp

    Harald Kapp Moderator Moderator

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    Nov 17, 2011
    I have never seen such a component. I think it is likely not a single component as a soft material is likely to melt during the reflow process. From the side view I guess this is a smd component soldered onto the PCb plus a soft standoff (or whatever that blob is good for) glued on top after soldering.
     
  3. kellys_eye

    kellys_eye

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    Jun 25, 2010
    Is it a component? A 45 degree view might help. It could just be a pressure pad to relieve flexing on the board? I can't see any solder pads or tracks to it.
     
  4. Harald Kapp

    Harald Kapp Moderator Moderator

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    Nov 17, 2011
    No tracks, but in the right photo there seem to be copper pads (gold plated?) in the lower left corner and upper edge.
     
  5. dave9

    dave9

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    Mar 5, 2017
    Why? I doubt there is anything about the device that needs such an arrangement. The felt or whatever it is, would still need an adhesive to attach to a metal back plate, and the adhesive could directly attach it to a PCB instead.

    It seems more like a hack to fix a manufacturing/design mistake, that they didn't design adequate mounting or their measurements were off so the board flopped around too much and they didn't want to scrap them and start over.
     
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