Tim, We're often asked to stack chip components and perform other odd modifications. We have also added a new procedure to IPC 7721 called Component Modifications and Additions. You can preview our version of this procedure, including images of stacked components, on our web site at: http://www.circuittechctr.com/guides/6-3.htm Jeff Ferry, CEO Circuit Technology Center, Inc. Chairman IPC Repairability Committee On Wed, 26 Sep 2001 09:10:38 -0500, Tim Devaul <[log in to unmask]> wrote: >Good morning, > > I am in the middle of a slight disagreement between a couple of our company's organizations. It is over stacking >SMD chips, specifically 0603s. In a temporary rework fix engineering wants to stack and solder one chip directly on top of the other. Does anyone have any experience positive or negative concerning this practice? > >Tim DeVaul >Quality Assurance Training and Audit Supervisor >Philips Broadband Networks, Inc. >100 Fairgrounds Dr. >Manlius, New York 13104 >Tel: (315) 682-9105 Ext. 2403 >Fax: (315)682-9006 >Email: [log in to unmask] > >--------------------------------------------------------------------------- ------ >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 the following message: SET Technet NOMAIL >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 the following message: SET Technet NOMAIL 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 ---------------------------------------------------------------------------------