Electronics Forum | Fri Mar 10 03:16:07 EST 2006 | Slaine
Multicore make a HMP alloy liquidus at 298 degrees, Pb93Sn5Ag2.Ive used it to attatch thermocouples but they're difficult to solder as they dont wet.
Electronics Forum | Thu Mar 02 04:44:48 EST 2006 | EC
Hi, We found voids on BGA. Understand IPC stated as long as not more than 25% should be fine. So, is there any standard stated how many voids in BGA can be allow. Appreciate your help......
Electronics Forum | Thu Mar 02 07:57:25 EST 2006 | davef
Voids in BGA most often are a process indicator, you know unless either they're huge or there's lots of them.
Electronics Forum | Thu Mar 02 23:09:20 EST 2006 | kmp
If you have a servo or encoder problem you should be getting alot of errors. Are all feet leveled on a stable floor? It wouldn't take much to shake them. A full coke machine weighs more.
Electronics Forum | Sat Mar 04 11:07:21 EST 2006 | charls
hi pavel, If you are getting vibrate during fast mode, encoder or motor cable might be faulty. yes i faced the same problem in Juki KE2010 m/c. Try by replacing encoder & motor cable from Motor to driver unit. All the best
Electronics Forum | Thu Mar 02 05:30:45 EST 2006 | arnie
we are encountering a problem wherein the ballast transformer we built on the pcb produced a vibration or a humming sound.? what is the possible cause on it. what may the problem on the assembly of transformer.
Electronics Forum | Thu Mar 02 07:54:07 EST 2006 | davef
Here's some explanations: http://www.psaudio.com/articles/hum.asp http://www.signweb.com/neon/tips/neontip12.html We like the 'don't know the words' one.
Electronics Forum | Thu Mar 02 12:09:12 EST 2006 | jrr3434
I have a board with 0603 parts with .2mm spacing between the parts and in some areas smaller. Can any one help me on what size stencil thickness I need. Any help would be appreciated. Jay
Electronics Forum | Thu Mar 02 13:19:10 EST 2006 | Wave Master Larry
WELL, I heer that thikness was always wrong where I work, and for what ever reason the engineering department chose 6 milimeters. Personaly i would of gone 8 myself. I look under the magfying glass and always noticed in-suficient solder on the gull
Electronics Forum | Thu Mar 02 13:29:30 EST 2006 | russ
6 mils maybe? instead of 6mm? We go down to 5 mils and up to 7 with 0603. You could even use a 4mil stencil for these without any problems. The .2mm (.0078")apart however might get you in trouble unless your equipment is rock solid.
