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Michael Karas
12/12/13 02:58
  12/12/13 03:03

Read: 987 times
Beaverton Or

#190196 - B on B
Responding to: Oliver Sedlacek's previous message

A common solution to the board flex problem is to stick on rubber bumpers on the back side of the board to fill in the space behind the board up to the enclosure wall. This way when you push on the connectors the board will not flex nearly as much.

Do use care to select rubber feet that have an adhesive that have a known chemical makeup. I have seen at least one instance where such bumpers were used where the adhesive contained some acidic component. Over time the fan driven airflow over the board spread the out gassing chemicals from the bumper adhesive downwind on the board and caused some copper corrosion on the exposed edges of pads and vias.

Michael Karas

List of 12 messages in thread
Anyone here used PCB stiffeners?      Oliver Sedlacek      12/10/13 07:07      
   Thicker PCB      Mahmood Elnasser      12/10/13 07:27      
      There once was a product ...      Richard Erlacher      12/12/13 02:42      
    I really want something off the shelf      Andy Neil      12/10/13 08:52      
   mechanical support      Joseph Hebert      12/10/13 22:56      
      More info      Oliver Sedlacek      12/11/13 01:25      
         Contact page      Joseph Hebert      12/11/13 06:21      
            Corporate strait jacket      Oliver Sedlacek      12/12/13 02:13      
               Customer?      Andy Neil      12/12/13 08:17      
                  Contract design      Oliver Sedlacek      12/12/13 08:38      
   B on B      Michael Karas      12/12/13 02:58      
      or ...      Joseph Hebert      12/12/13 08:38      

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