Hey guys,
Given the fact that i know very little about your product I would say put the burden on the apps engineers at Speedline-Camalot(www.speedlinetechnologies.com). General rules of thumb may not apply depending on your material selection and product. If you send samples, they will analyze them, make recommendations, and be able to generate some quantitative data if you wish to persue testing. Then you can start dealing with your cure issues.
One technology for underfill curing you may wish to examine would be Variable Frequency Microwave (VFM) curing. If you are experiencing issues with convection, VFM may be able to drastically reduce your cycle time and the stress effect on the product depending again on your material selection. Lambda Technologies (www.microcure.com) has plenty of data on VFM and will also run applications evaluations should you wish to provide samples. They also have a Forum at the HDI Expo in Phoenix the week of September 23rd (www.hdiexpo.com)
Please feel free to contact me if you have any additional questions or concerns.
Best Regards, Sean 480-829-8170 ext. 14
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