Electronics Forum | Wed Apr 19 09:07:44 EDT 2006 | russ
Many times a pad that has no signal trace going to it will come off. It does happen from heat and time as noted before. Somtimes even the best rework person will remove them. If this can not happen in your situation I would recommend that you use
Electronics Forum | Wed Apr 26 10:21:09 EDT 2006 | slaine
Hi you need to dip long enough for the temperature of the part being soldered to reach about 20 degrees above liquidus of the solder. For the small parts we dip solder we had Sn62 and SAC387 baths set to 250 degrees and this seems to work best for us
Electronics Forum | Fri Apr 21 09:15:03 EDT 2006 | russ
I would recommend that you find a small 3-4 zone oven with convection preferably. If you are running lead free then you will want to find at least a 5 zone. With lead free coming on, there are many small ovens available from companies upgrading.
Electronics Forum | Wed Apr 26 09:52:28 EDT 2006 | russ
So then to justify the 2400, you will need to calculate the decreased time for setup/changeover and what that costs your company. this will be justification. e.g. if it takes half as long to setup you save half the money. labor hours x employee co
Electronics Forum | Wed Apr 26 09:20:43 EDT 2006 | PWH
I've seen failures like this with multilayer parts that seem to be affected by high activity flux during SMT (water soluable in this process). High, high failure rate in our case. I'm not sure what was going on with our parts but we thought maybe t
Electronics Forum | Wed May 10 00:56:39 EDT 2006 | serg
Date: May 09, 2006 03:29 AM Author: Slaine Subject: core of a transformer what specification do you need, whats the working temp, do you need it to be ? emmerson and cumming do a range of epoxies that might be of use? Yes I search glue for
Electronics Forum | Tue May 09 17:56:36 EDT 2006 | russ
When we first started we had this problem, we eliminated by longer profile (less delta T) and then ultimately chnaged pad dimensioning for 0402 away from IPC standard. i would highly recommend that you check your placement accuracy and your prof
Electronics Forum | Tue May 09 14:49:57 EDT 2006 | Larry
Hey guys, Anybody having trouble with increased false contact issues in ICT after switching from lead to lead free? Our test guys keep trying to imply that the flux residues are a problem (we're using Alpha EF2202), but as the soldering process eng
Electronics Forum | Tue May 09 18:00:33 EDT 2006 | russ
in all actuality, you are both right. Alpha metals does have the toughest/hardest noclean residue that I have seen. When changing to no-clean FLUX you should run different probes. So back to square one. You're both right so who's gonna win?
Electronics Forum | Wed May 17 11:09:42 EDT 2006 | wrongway
Hello james I have been useing A heller 1809exl with the blower controls I have had some parts blowing off and adjusting the blowers to low did work for use just so you know that if you do get the option it has worked for use Good
