Ryan ,

 We have been using the light pipes for about a year now.
And they will require some extra handling. Either heat stake or
an adhesive to maintain their position.
  While it is better than using a THT part, watch out for pricing.
Many times the light pipe cost more than the LED's!!!!!!
 And can have an availability problem.( what else is new)

        Good Luck.

           Ralph Garvin

            Dir. of New Product Development
             Westport Research , Inc.
               6102 Arlington
                 Raytown, Mo. 64133-3816



> Hey all-
>
>         Engineering has come up with the idea of replacing some bi-level LEDs with
> smt LEDs and attaching light pipes.  These Dialight light pipes "press-fit"
> into drilled holes in the board.  I am not sure if we are trading one
> process step for another.
>         We currently selectively wave solder the pth LEDs, but there are some
> resistor networks making the pallet openings a little hairy...but it is
> feasible as they are.
>         My question is:  how tight do these light pipes press in?  Is anybody else
> doing this?  Do I need to heat-stake these things?  If so, it doesn't sound
> like any advantage from a manufacturing point of view.  If not, is it easier
> to press these in than place pth parts, clinch and wave?
>         I am not completely sold on this idea.  Thanks all.
>
> -Ryan Jennens
> TelGen Corporation
> (517) 887-6666 x151
>
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