Ed, As your straight man.............Given the proper reflow profile, In my humble experience all solder present reflows. (But then we use vapor phase) Semper Fi Tom >---------- >From: Ed Cosper[SMTP:[log in to unmask]] >Sent: Monday, March 23, 1998 10:40 AM >To: [log in to unmask] >Subject: Re: [TN] Assembly - Solder reflow > >Perhaps someone could enlighten me on this issue. When the printed circuit >board has the solder paste applied to the smt pads, the smt component placed, >and then processed thru a convectional ( or IR) reflow oven, does the >original solder from the Hot Air level process actually melt and reflow with >the solder paste or does the topography of the original solder remain the >same? > > >Ed Cosper >GEI Circuits, Inc. > >################################################################ >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 ################################################################