From: Sasi Murthy                                                              
448-5688 (tie 778)                                                             
Subject: RF substrates - test vehicles                                         
I am in the process of investigating high frequency RF substrates with         
respect to assembly processes, etc and am looking for any available            
test vehicles that would allow measurement and testing of the substrate        
after multiple reflows (i.e for warpage, SIR, variation in dielectric constant,
etc..)                                                                         
I am interested in looking at variations of teflon substrates.                 
Does anyone know of available vehicles ?                                       
Thanks in advance.                                                             
                                                                               
Regards, Sasi                                                                  
Process Applications Engineer                                                  
(416) 448-5688, fax (416) 448-4736                                             
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