Gary, One more thing on contact lube. Gold on Gold system can also use contact lube. It decreases friction and prevents freezing. If you wish to see the property of OS-124 contact lube go to www.santovac.com for more information. ----- Original Message ----- From: "Gary Camac" <[log in to unmask]> To: <[log in to unmask]> Sent: Friday, April 07, 2000 7:03 AM Subject: [TN] Contact Lubricant and Fretting Corrosion > Good morning everyone, > > I had a couple of questions concerning the prevention of fretting corrosion. I am in the > process of reviewing and updating some of our older process procedures. At present the > procedure on Lubrication of Connectors is setting in front of me and I have managed to > raise a few questions. A search of the Technet archives and some old memory banks have > produced: gold to gold - its a good thing, no lubricant required: tin/lead to tin/lead - > its a good thing if lubricated: gold to tin/lead - not good, even with lubrication. I > know some of the information on this subject is dated, but I don't believe the passing of > time has invalidated it. > > On products where we build the entire assembly, I can easily verify the total connector > configuration. However, when we are building only a circuit board assembly for a > customer, I have no idea of materials used in the mating connectors. To further > complicate the issue, I know that some connector manufacturers lubricate the tin or > tin/lead female connectors and some manufacturers do not, or at least won't verify that > they do. > > Is there an industrial specification/requirement for the lubrication of connectors on > circuit board assemblies that should be called out in the product specification? > > At present we are using a contact lubricant on all tin or tin/lead plated male connector > contacts, except when the mating connector is known to be prelubricated. The lubricant we > are using must be allowed to cure out 24 hours prior to assembly. This is not real > conducive to lowering cycle times. Is anyone aware of a contact lubricate the would > improve on this? > > Thanks, > > Gary Camac > > ############################################################## TechNet Mail List 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://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ##############################################################