Electronics Forum | Thu Feb 10 08:25:02 EST 2005 | marakas
Could anyone advise what BGA rework rate we should expect with product that has 4 BGAs (224 pins, 196 pins, 160 pins, 48 pins). Negative factor is that we have old and tired pick & place - Panasonic MPA-G1 or MPA-V without AOI.
Electronics Forum | Sat Feb 05 09:01:15 EST 2000 | Dave F
JS: The issue is not how efficiently/effectively that you can run your placement machine, probably. The issue is how efficiently you can run that part of your assembly process that is the bottleneck. Other than improving quality, optimizing any pa
Electronics Forum | Sat Feb 05 05:10:53 EST 2000 | Dean
It would be helpful to have some additional info on your line and process. Lets make some assumptions... Consider: re-tooling costs for your fab supplier. Can your supplier hold the additional tollerences for a larger panel. Can your supplier fab
Electronics Forum | Fri Jul 06 18:48:28 EDT 2012 | saju86ece
Hi, I have one query about cleaning rate for screen printing. In screen printing process, for cleaning process generally we will give up to 5(cleaning rate)depend upon the product. I need the cleaning rate specification for the above said. Need you
Electronics Forum | Fri Jun 07 14:05:39 EDT 2024 | davidk
I wanted to open a discussion and ask about opinion: What is a normal result of the inspection of an AOI? How many falls calls per component /opportunity is bad/normal/good? How many defects per component/opportunity is bad/normal/good? What is goo
Electronics Forum | Thu Jun 13 14:41:40 EDT 2024 | tommy_magyar
Hi David, In one of my previous jobs I worked as an AOI/AXI process engineer and we had a set target of 75% FPY. This means that 75% of the boards at IPC Class 3 standards would not have a single false call. This also means you would need to set y
Electronics Forum | Mon Jun 07 14:13:53 EDT 2004 | ricardof
Gabriele, yes you're right, but my question is more focused to restrictions as for the Operators, and then the performance in Screen Printer and Oven. The board has 400 high speed parts and 20 parts for Odd Shape machine (QFPs and 2 BGAs), Board is n
Electronics Forum | Fri Jan 28 19:24:15 EST 2011 | jlawson
Should contact Rehm Thermal they have a whitepaper on pros and cons of Vapor Phase vs Convection.... Vapor phase traditionally targeted heavy PCB, large mass products better then lighter ones, due to ramp rate control being harder to attain vs say a
Electronics Forum | Fri Apr 07 07:47:53 EDT 2006 | Chim Richalds
Years ago we hired a consultant who helped try to resolve our high solder defect rates. He recommended the use of finger cots - $50,000 in consulting fees later, we still had the same defects.
Electronics Forum | Wed Apr 07 03:44:40 EDT 2010 | jackevest
The missing rate spec. of normal machine is under 0.3%, for our experience 0.1% is normal for average, if you can maintain the machine well, like the nozzle cleaning, feeder maitain...you can keep the 0.05%.
