Walter, The tin coating will be several thousandth of an inch thick and dome shaped if you don't blow the molten solder off at the wave. Assuming you use an airknife cranked up super high to level the pads, and if you intend to use the board immediately, you can probably level the pads down to less than a tenth of thousandth of an inch thick. Seems like a strange thing to do. Why don't you use HASL or immersion Tin? Thanks Ryan Grant Advanced Technology Engineer MCMS (208) 898-1145 [log in to unmask] > -----Original Message----- > From: Horaud, Walter [SMTP:[log in to unmask]] > Sent: Wednesday, August 30, 2000 9:51 AM > To: [log in to unmask] > Subject: [TN] Coating with tin by wave soldering ? > > For the thermosoldering, the pads need to be coated with tin. In our case > the coating must be as thin as possible. > I was wondering if this step could be done by wave soldering. > Does anybody know the average thickness of tin on the pads of a Ni/Au > finishing board (without components) after wave soldering ? > > Thanks for helping, > > Walter. > > ############################################################## > 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 > ############################################################## ############################################################## 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 ##############################################################