Ken Patel wrote: > > Hello Technetters, > I have couple of questions for Entek coated boards I am running on sample > basis. > (1) Do I need to apply solder paste on mounting holes of Entek coated > boards? These mounting holes will be used to fasten the board in a > chassis. Give me your pros and cons. We routinely see OSP users seeking testpads and Cu chassis mounting surfaces to be pasted and reflowed. OSP residuals apparently do not make for a good surface for electrical contact, in spite of questionable flatness. > (2) The boards do have press fit connectors. Do you think I will be OK > with the Entek coating as connectors now will be making a contact > with copper which will get oxidized. Any long term problem from > reliability point of view. Can anyone suggest any test to find any > long-term reliability problem because of press-fit connector going > onto the bare copper? Have seen the suggestion to use solder finished leads since solder acts as a lubricant to the pressfit process. Have not yet had to shepherd combination of pressfit and OSP through to actual product myself (whew). Good luck, and regards to all, -- Jeff Seeger Applied CAD Knowledge Inc Chief Technical Officer Tyngsboro, MA 01879 jseeger "at" appliedcad "dot" com 978 649 9800 ################################################################ 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's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################