Electronics Forum | Tue Jul 06 00:23:11 EDT 2010 | cksam
I am doing the case study of the component chip 0201 tombstoning problem. The significant causes was the reflow profiling preheat slope or ramp up rate. I really can't differential between preheat slope and ramp up rate. Could anyone here show me the
Electronics Forum | Fri Jul 09 07:14:36 EDT 2010 | cobar
http://www.shanelo.co.za/reflow_profile_adjustment.htm http://www.shanelo.co.za/how_to_profile_a_pcb.htm http://www.shanelo.co.za/SMD%20Assist.htm
Electronics Forum | Mon Jul 12 04:52:50 EDT 2010 | cksam
Thanks for the information about the reflow profiling its really useful for me to set up my own profile.
Electronics Forum | Mon Jul 12 05:01:30 EDT 2010 | cobar
Please follow the paste suppliers specs for the paste as an indicator.Most people think that if they follow the paste suppliers recommendations to the T it will be a perfect profile but this is not the case.Play around with preheat settings but follo
Electronics Forum | Tue Oct 05 20:07:12 EDT 2004 | davef
We do not know how your KIC2000 calculates slope. Here's an approach to calculating slope: * Subtract the lower temperature from the upper temperature. [Temp|upper-Temp|lower] = Temp|change * Subtract the time when the lower temperature was measured
Electronics Forum | Tue Oct 05 17:37:21 EDT 2004 | mikecollier
We currently use a KIC 2000 system to profile on our oven and create our recipes. I had a customer in today reviewing our profiles, and he had concerns that we were exceeding 4 deg. c/sec. on our profiles. The process window parameters that we use
Electronics Forum | Thu Apr 07 11:39:48 EDT 2011 | remullis
My oven profile is 155,160,165,180,220,245,255,227 Cooling Zone 132/92. This is a 8 zone CV820 Technical Devices oven. My assy profile using Datapaq Q18 - Base on one probe feedback - Positive slope (7.09), Pos Slope Time (.45), Rise Time (1.17), Me
Electronics Forum | Tue Oct 05 17:42:52 EDT 2004 | vinod
Are you following solder paste manufacturer's spec?? I know still some time it is hard to maintain slope particularly with less zone reflow oven.
Electronics Forum | Tue Oct 05 17:47:28 EDT 2004 | mikecollier
We are using the paste vendor's recommendations for TAL, preheat, etc. They do not give any indication on their datasheet for the time to use to calculate slope (calculate over 20 seconds, 60 seconds, etc. - not included in their data).
Electronics Forum | Fri Aug 09 15:59:33 EDT 2002 | finepitch
stick/slope feeder is not an option? Erhan
