What do you want to know?? Raw Board Reliability (solderability) Contact Resistance Reliability? Solder Joint Reliability With regards to Solder Joint Reliability, the solder interface of the nickel to solder forms tin intermetallics which will not be as strong as solder to solder. These joints will still be acceptable for most smt components but immersion gold and BGA's should be avoided. Regards: Steve O'Hara HP ______________________________ Reply Separator _________________________________ Subject: [TN] Reliability of Immersion Gold PCB Author: Non-HP-Fulton.Feng.ffeng ([log in to unmask]) at HP-Vancouver,mimegw10 Date: 5/12/98 5:39 PM Hi Has anyboy done any reliability study on Gold Immersion PCB finish? Thanks Fulton Feng ################################################################ 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 inform ation. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-97 00 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 ################################################################