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 
> 
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