Jeff, My "rule of thumb" is plastic BGA's with eutectic balls - I use stick flux only. For ceramic BGA's with non-eutectic or "hard" balls, I must use a microscreen and apply solder paste. Mark ----- Original Message ----- From: "Jeff Ferry" <[log in to unmask]> To: <[log in to unmask]> Sent: Thursday, January 31, 2002 11:54 AM Subject: BGA Rework Using Paste vs. No Paste > Fellow TechNetters, > > We nearly always apply solder paste to the circuit board when we replace > BGA components during rework. Yet, after speaking with a handfull of BGA > equipment companies at APEX, seems like they all recommend using flux only > vs. paste, unless the circuit board is used in a high rel application. > > What do ya'all do/recommend for BAG rework? Can you point me to any > studies/reports on the subject? > > Thanks, > > Jeff Ferry > CEO > Circuit Technology Center, Inc. > > -------------------------------------------------------------------------- ------- > Technet Mail List provided as a free service by IPC using LISTSERV 1.8d > To unsubscribe, send a message to [log in to unmask] with following text in > the BODY (NOT the subject field): SIGNOFF Technet > To temporarily halt delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL > To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest > Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives > Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional > information, or 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 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------