Electronics Forum | Thu Sep 29 19:18:24 EDT 2005 | HLy
Hi, I noticed that the solder joints on my BGAs end up with a lot of wrinkles after reflow. See picture at: http://pstr-r02.ygpweb.aol.com/data/pictures/02/01A/17/DD/E3/9E/n8BhepQLFDs6GMSwaRNxPCTWR5NdpUJZ0300.jpg Does anybody have any ideas what cau
Electronics Forum | Mon Oct 03 21:15:16 EDT 2005 | adlsmt
Its a single board, one up. 4 layer, pretty simple, no large copper pours. We get these consigned from our customer so I cant work that end of it but wanted to make sure to cover everything I can. The oven it runs in was just checked out by the facto
Electronics Forum | Mon Oct 03 12:22:54 EDT 2005 | Stew
Depending on your application, you may need to pre-heat before Soft Beam (unless they make one for it now). Plus, very small connections seem to push it's limits. The beam can only get so narrow. Lasers are good but reflectivity can come into play
Electronics Forum | Fri Oct 07 09:18:39 EDT 2005 | russ
If you're using non-lead free parts then you don't have a pbfree assembly so why worry about marking it anyway? We apply this artwork after the assembly has been completely engineered for lead free. Artwork can be covered up with mask or whatever if
Electronics Forum | Tue Oct 11 18:35:59 EDT 2005 | stepheniii
How big a tank do you have at the compressor? Basically the bigger the better. You will still have the same duty cycle ratio but the compressor won't be cycling as fast. Hopefully someone here knows what a good size would be. And when you say "kic
Electronics Forum | Fri Oct 14 15:44:30 EDT 2005 | fastek
Yes....interesting. Word is this better be successful for them or they are done. At first glance my issue would be what impact do solder paste "dots" have in the following areas compared to stenciled paste: 1) Controllable with regards to volume 2
Electronics Forum | Thu Oct 20 23:19:09 EDT 2005 | Cmiller
You should not be worried about these points in the SMEMA standard. You need to make it work for your application. If you are running really small boards, keep the gap between conveyors and the lead-in as tight as you can. If you are using large pane
Electronics Forum | Fri Oct 21 12:19:36 EDT 2005 | ratsalad
I can see this being useful to a company that needs the ability to do one-day turns on prototypes. The type of situation where your customer shows up at your door with two bags, one is a bag of parts and the other is a bag of cash and they say they
Electronics Forum | Wed Oct 19 00:28:59 EDT 2005 | KEN
Lets talk some facts here. I have 6 BTU VIP's. 29,000 combined run hours. Not one part replaced in 6 years of operation. NOT ONE across 6 sepearate machines! I have had up to 6 Hellers at one time. Do you know why they have a life time warranty
Electronics Forum | Thu Oct 20 12:50:11 EDT 2005 | bobl
I used to collect mine in a 50 gal drum and take them to the scrap dealer. If he classifies it as brass or copper you can get a good return. Most leads are nickel and tin plated brass. Most dealers stick a magnet on it and tell you its not worth much