Electronics Forum | Wed Jun 22 15:03:12 EDT 2005 | patrickbruneel
The only thing ammonia can do is tarnish copper and make it more difficult to solder. And the higher temp in lead-free will discolor the latex (giving it a sticky surface), but the functionality of the mask will be intact. There should be greater co
Electronics Forum | Mon Jun 27 09:38:30 EDT 2005 | Bob R.
What problems are the quality people seeing? I hope they aren't expecting a toe fillet. QFNs are typically cut from an array after plating. This leaves exposed copper on the sides of the part. We'll often see smearing from the sawing process that
Electronics Forum | Sun Jun 26 04:08:40 EDT 2005 | fastek
If you have a virus protection software in place it is likely slowing your system down to a crawl. Disable it and see if your results are better. You can also do a ctrl+alt+del. Go to "Processes" and take a look at what is bringing down your speed. H
Electronics Forum | Tue Jul 19 08:51:29 EDT 2005 | GS
any thanks Rob, te specimen label Anglia is some thing complete and very helpful example. Hope Comp Suppliers will take care about the needs of Users (mainly if they are small EMS). To know how the terminals/leads are metal finisched is important f
Electronics Forum | Wed Jun 29 03:47:12 EDT 2005 | fastek
I'm confused. Aren't Fuji nozzles like $20 each? Why bother? I would hope you understand that a nozzle not properly repaired could cause $50 worth of rework in about a minute after you installed it. Stepping over dimes to pick up pennies comes to min
Electronics Forum | Tue Jul 12 11:50:23 EDT 2005 | Mark
Chris (if thats your real name), For 0201 I only use Asahi from Singapore. If it is 0402 Asahi is by far the best. Kester is mainly used for 0603 and Indium is a good choice for BGA's only (and some QFP's). Just my frank opinion. Hope the infor
Electronics Forum | Thu Jul 14 11:04:53 EDT 2005 | dougs
yes SPC can be used on a wave solder machine, you should use a c-chart to monitor the amount of defects per board or group of boards, this will let you know if your process is stable, as you improve your process you should re-calculate your UCL, hope
Electronics Forum | Tue Aug 02 11:17:27 EDT 2005 | Stefan
Tape feeders usually have a fixed pick position regardless of the package size. Is the component body off center in the tape pocket? I hope you can enter an offset in the feeder set up file. Also, perforation holes can deform, if the reel is too hea
Electronics Forum | Tue Aug 09 10:53:10 EDT 2005 | DannyJ
Hi Dave, Thanks for the suggestions. Those did cross our mind as an option, and kind of saving that for a last resort. We just hope we have enough left for them to do an analysis and come up with the right solution. We may have found a supplier
Electronics Forum | Thu Aug 04 06:18:21 EDT 2005 | danhui888
Hi Rob, he did not get back to me which I have to convince and explian to him why do I suggest this equipments. Low volume may use ike Yamaha or Juki. What I suggest to them is Fuji line with low cost but for future plan in the event he increase his
