Electronics Forum | Fri Apr 30 04:57:37 EDT 1999 | Bernard Mulcahy
| |Hi all This Debate on lead free soldering is really hotting up here in Europe. From 2004 the use of lead in components and assemblies will be banned here. Also flame retardent halogens will be banned(FR4 etc). While we all agree that we have to m
Electronics Forum | Sat Apr 24 08:23:03 EDT 1999 | Bubba
| Surprisingly enough, ever since the addition of an omega wave, we solder those often-troublesome SOT23's just fine and dandy.. anyways, long-term, well be getting a universal GDM which uses positive displacement pumps..currently we're using fuji g
Electronics Forum | Thu Apr 22 10:57:20 EDT 1999 | Jack Coia
On various PCB's after building processes,such as reflow, flowsolder and wash. The soldermask on the PCB's have become discoloured, like a 'marble' effect all along the solder side of the board, it is lighter in contrast than normal, although when ot
Electronics Forum | Tue Mar 23 16:28:07 EST 1999 | CHANCE TURNER
| I am looking for clip art images of electronics assembly. Images like wave soldering, surface mount components, soldering irons... just general assembly graphics. Many sites have different individual images that they use I was just wondering if a
Electronics Forum | Wed Mar 17 22:28:54 EST 1999 | Tony A
| After switching from No-clean flux to Water soluble (Kester)we encountered voids problem (X-ray and microsectioning). Reducing the apperture sizes made the voids smaller but did not eliminate them. So we had to go back to No-clean. Any idea why voi
Electronics Forum | Tue Feb 23 09:21:15 EST 1999 | Steve Schrader
| During inspection and test we find leads which do not get soldered. Some are because of insufficient paste, but with others everything looks right. This will only happen on 1 to 2 pins, and it is not isolated to a specific type of ic or location o
Electronics Forum | Thu Feb 18 12:56:18 EST 1999 | Bob Barr
We are using .040" diameter fiducials (global and local) on our boards. They are solder covered and HASL. I get batches of boards where the p&p vision system has trouble reading the fiducial. The fiducial looks dark on the screen. The board vendo
Electronics Forum | Thu Feb 18 17:15:24 EST 1999 | Jason Gregory
Check this company out....Winslow Automation. They have a real easy "preform" for reworking BGA's. You just wick the old solder off, flux the packages, attach an appropriate preform, reflow it with a corresponding profile, remove the water-soluble pa
Electronics Forum | Fri Feb 12 19:02:21 EST 1999 | Jon Medernach
|As the squeegee shears the paste at the face of the stencil the vehicle used to contain the solder spheres compresses and expands out the top of the opening after the squeegee passes. This is 1 or 2 mil at most. The peaks should not be considered
Electronics Forum | Fri Feb 05 09:39:58 EST 1999 | Dave F
| Can anyone help me with the pros and cons of trying to wave | solder tantalum and large (1812) ceramic capacitors. I do | know that one may see fractures on larger cermaic caps, but have not seen much on the tantalums. Any insight as to what proble
