Dwight, Steven, I would like to point out that TR-NWT-000078 has been surplanted by GR-78, Issue 1, Septmber 1997. Bev Christian Nortel >---------- >From: Dwight Mattix[SMTP:[log in to unmask]] >Sent: Tuesday, March 31, 1998 12:26 PM >To: [log in to unmask] >Subject: Re: [TN] press-fit connectors > >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] >> >>################################################################ >>TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c >>################################################################ >>To subscribe/unsubscribe, send a message to [log in to unmask] with >following text in the body: >>To subscribe: SUBSCRIBE TechNet <your full name> >>To unsubscribe: SIGNOFF TechNet >>################################################################ >>Please visit IPC web site (http://jefry.ipc.org/forum.htm) for additional >information. >>For the technical support contact Dmitriy Sklyar at [log in to unmask] or >847-509-9700 ext.311 >>################################################################ >> >> >> > >################################################################ >TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c >################################################################ >To subscribe/unsubscribe, send a message to [log in to unmask] with following >text in the body: >To subscribe: SUBSCRIBE TechNet <your full name> >To unsubscribe: SIGNOFF TechNet >################################################################ >Please visit IPC web site (http://jefry.ipc.org/forum.htm) for additional >information. >For the technical support contact Dmitriy Sklyar at [log in to unmask] or >847-509-9700 ext.311 >################################################################ > ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC web site (http://jefry.ipc.org/forum.htm) for additional information. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ################################################################