The bible for pressfit is Bellcore TR-NWT-000078 (esp. chapters 4, 6, 7).

(my $.02)
- Spec and verify the plated thru hole carefully, using the connector
manufacturer's hole specification (e.g. a common .040 finished hole spec is
drill .0453 +/- .001, min copper .0012, finished hole .040" +/- .002 or
.003, hole to hole true position tolerance w/in connector pattern .0001").
Get the connector supplier spec!
- Qual per Bellcore insertion/retention forces and microsection analysis of
hole wall deformation
- Monitor qual periodically in production (Bellcore forces and microsection)
- Monitor/Control insertion forces and Z-stops in process

<fwiw> We've had good success w/ pressfit generally but there are plenty of
ways to mess it up and get in trouble (i've got the scar tissue to prove it
:-) ).  Personal bias based on our experience and studies done by Litton is
the compliant C section Litton/Winchester developed.  It's used widely by
other manufacturers now.  Engineering crew at Litton Interpak understands
the basic science and how to do it right as well as anyone I know.
([log in to unmask])

Dwight Mattix
Staff QE, Mgr

At 11:23 AM 3/30/98 -0500, you wrote:
>I am looking for information on press-fit (rather than soldering)
>connectors.  In particular, we are looking to use these on backplanes
>for military jobs.  Does anyone have any experience with such
>connectors?  Where can I find out further information on them?  What
>kind of tools do I need for my process?
>
>Thanks in advance.
>
>Steven Lustig
>Process Engineer
>EMS Technologies, Inc.
>Norcross, GA
>(770) 263-9200 x4714
>[log in to unmask]
>
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