Electronics Forum | Sat May 13 00:17:40 EDT 2006 | George S
I had Mydata for several years, and got a Juki 2060R about 8 months ago. If I had to choose today, it would be Juki again. The features which help me are bank changing, where I can set up offline and change over in two minutes for all feeders. The
Electronics Forum | Tue May 02 05:59:28 EDT 2006 | davef
We agree with Ken's points about off contact / screen versus stencil, but this DHolt is talking stencil [regardless of what is typed about screens]. Comments are: * On "smears under the stencil": smearing happens. It makes us wonder about the frequ
Electronics Forum | Tue May 02 07:19:29 EDT 2006 | billyd
Good morning all. I'm trying to find some help on my voiding issue on my lead free BGAs. I am using a Heller 8/2 zone oven, and using Qualitek solder paste. I had listened to a tech representing another solder company, who told me to make the joints
Electronics Forum | Tue May 02 07:46:39 EDT 2006 | Bob R.
Be careful about taking any generic advice and trying to use it to reduce voiding for your particular paste with your particular boards. I've done a few literature searches over the years on causes/cures for BGA voiding in the SnPb world and found a
Electronics Forum | Tue May 02 12:50:44 EDT 2006 | grantp
Hi, Yeah, it's a nightmare, and we are dealing with suppliers such as Xilinx and many others who have lead times that are now 20 weeks, but they can get you lead parts on 4-6, because they did not plan correctly. Lead free is not something that's ha
Electronics Forum | Tue May 02 12:07:26 EDT 2006 | Sheldon Stewart (Process Engineer)
I am curious if everyone else is seeing the same dramatically reduced tip life with lead-free that I am? We have purchased new irones with controlled temperatures up to 800F. We are doing more hand soldering on our lead-free at the present while wait
Electronics Forum | Fri May 12 11:40:25 EDT 2006 | solderiron
If you can change to SN100C do it. The nickel prevents the high tin content from eating away at the metals on the tips. Similar to what the Lead did in 63/37 alloys. This Koki crap is just that, crap. 99% tin??? Thats what is causing the problem peop
Electronics Forum | Tue May 02 15:09:40 EDT 2006 | PWH
Just a few problems you might have to deal with: 1) Your bare boards must be clean and kept clean though-out the process. You could notice handling contamination that might otherwise have been removed in your wash. 2) You will see solder balls a
Electronics Forum | Sat May 06 12:08:35 EDT 2006 | mrduckmann2000
We too use both Water soluble and No-clean in our shop. I can tell you that we have won 6 different contracts from other local contract house because our boards "look pretty". It's amazing how some customers judge how other houses build their board
Electronics Forum | Wed May 03 15:00:44 EDT 2006 | patrickbruneel
It all depends on process, design and environment in which the contacts are used. Both have excellent conductivity characteristics Both don't oxidize over time On the other hand gold is much softer then carbon, and after hitting that contact a gazil
