Hi, I wont to clarify regarding the max weight for double side reflow, i ment that there is a ratio between the surface energy and gravity, one of the way to masure the adhesion is to test when does a melt droplet is seperated from the solid surface, and with the use of Young-Dupre equation you can calculat the surface energy. ______________________________ Reply Separator _________________________________ Subject: Re: Max weight in DSR Author: Victor Li <[log in to unmask]> at INTERNET Date: 3/4/97 1:00 PM Is there such a ratio between surface tension and gravity force ? Where can I find it? Thank you very much. Best regards, Victor On Thu, 3 Apr 1997, Tamir Ben-Shoshan wrote: > Hello, > > Does anyone calculate the max chip's weight for double side reflow in > > more accurate way then comparing the surface tension with the gravity > > force. > > Thanks, Tamir > > *************************************************************************** > * TechNet mail list is provided as a service by IPC using SmartList v3.05 * > *************************************************************************** > * To subscribe/unsubscribe send a message <to: [log in to unmask]> * > * with <subject: subscribe/unsubscribe> and no text in the body. * > *************************************************************************** > * If you are having a problem with the IPC TechNet forum please contact * > * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * > *************************************************************************** > *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To subscribe/unsubscribe send a message <to: [log in to unmask]> * * with <subject: subscribe/unsubscribe> and no text in the body. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * ***************************************************************************