Electronics Forum | Mon Oct 15 23:30:35 EDT 2001 | Ivan Rojas
Well Dave ,,, ,, first thing I should do ,, is check my CAD data , and make sure match with the program in the pick and place machine ,, right now I work with Siemens and GC-Place ,,, In my case it may be other things to look for ,,, if is everythin
Electronics Forum | Tue Oct 16 11:53:04 EDT 2001 | raton
When only a few components are off placement? You'd like to say no tweaking of any kind, anywhere, by anybody (but me). But you're not there to run to their rescue all hours of the day and nite (almost but not quite), and getting product out the do
Electronics Forum | Tue Oct 16 09:17:29 EDT 2001 | andyc
Have you thought about wave solder contamination ? . We had a similar fault where glued chips were being shorted out due to "slivers" of solder dross being deposited onto the card . These dross slivers were being generated because the solder bath had
Electronics Forum | Tue Oct 16 18:42:32 EDT 2001 | mparker
I go with DaveF's advice. You are probably curing the glue too fast. Another phenomenon that I have experienced was during glue cure and solder paste reflow simultaeously. A good reason to run a glue cure profile seperately from solder paste reflow
Electronics Forum | Wed Oct 17 10:21:08 EDT 2001 | genglish
Cheers guys for your rapid response, I investigated the problem further today, eventually I cam round to curing the adhesive in a sandwich of microscope slides resting on the PCA in question (hopefully mimicking the heat transfer), the adhesive is sp
Electronics Forum | Wed Oct 17 10:37:13 EDT 2001 | davef
Help us understand your situation better: ARE THE QFP BOWED? If so, * Where are the QFP bowed? * Is the QFP body bowed or is it just the leads? * How much are the QFP bowed? * Are all QFP the same part number, from the same supplier, date code
Electronics Forum | Thu Oct 18 06:29:20 EDT 2001 | Yngwie
Dave, yes, your assumption is right, We only do washing after the second reflow. The timing from the post primary reflow to wash is no longer than 2 hour. The line config is as such : DEK265 � 3x MV2F- 1x MSF � BTU - AOI � DEK265 � 3x MV2F � 1x MSF-
Electronics Forum | Thu Oct 25 16:48:29 EDT 2001 | Cemal Basaran
We can inspect and measure strain field in anything larger than 320nm with Laser techniques we have. We can do this measurements during fatigue testing. Of course thick intermetallic region as a solid region is a problem due to the fact that you ha
Electronics Forum | Mon Oct 22 18:23:03 EDT 2001 | MikeF
Does anyone out there have a copy of the software, schematics or prints for a Vitronics SMD-310 reflow machine? We have one that was given to my current company recently, just before I started here a few months ago. It appears to be in excellent co
Electronics Forum | Mon Oct 22 19:22:25 EDT 2001 | davef
As an alternative, consider: * Searching the fine SMTnet Archives for the names of used equipments brokers, resellers, refurbishers, etc. * Contacting those folk on your Vitronics machine [or its siblings] * Contracting with them to make you a copy o
