Electronics Forum | Tue Mar 09 14:45:22 EST 2004 | Sr. Tech
Ummm....cummon Claude give me a little more credit than that. I understand supply and demand. That's not really the point I am after here, but anyways....carry on.
Electronics Forum | Fri Mar 12 15:57:30 EST 2004 | jseagle
Check the cables first, they get damaged after a while by the turntable for the monitor, lots of bending. We had to replace our cables. Also, have you checked the monitor? We had to replace ours. Our 3AV is 8 years old. James
Electronics Forum | Mon Mar 29 13:16:10 EST 2004 | russ
The only time I have ever had this happen was with un/not fully cured solder resist. Only shows up after wave. I believe that is because of the higher temp than reflow but don't know for sure. No help but what the hey Russ
Electronics Forum | Wed Mar 24 16:28:06 EST 2004 | davef
No-clean flux residues can be either cleanable or not cleanable. The not cleanable type leave a milky white residue on the solder connection after suitable soaking in water. Your flux supplier will have suggestions on the appropriate flux.
Electronics Forum | Tue Mar 30 22:30:06 EST 2004 | davef
Tony First, drying at 125*C for an hour is not going to do much drying. Heck, those boards are barely warm to the touch. Second, tell us about: * Pitch of your uBGA * Solder paste flux * Cleaning process and agents
Electronics Forum | Tue Apr 13 19:59:21 EDT 2004 | davef
Most 1.27 pitch BGA can be cleaned with modern machines. As far as the timing of cleaning OA flux res, obviously the sooner the better. After that different fluxes are different. This must be a common question for cleaning professionals. They pro
Electronics Forum | Thu Apr 15 08:23:47 EDT 2004 | prod
hi, Having put a copper socket trough a wave soldering machine, and then through a DI wash, the boards have been dried and after a few days a green residue has been noticed on the copper. any suggestions? not drying properly maybe? or could it be th
Electronics Forum | Tue Apr 20 17:19:38 EDT 2004 | Mike
1. Which manufacturers have proven the immersion silver is reliable after solder joint assembly? 2. Who has published guidelines for storing and handling immersion silver boards? 3. Is the immersion silver finish wire bondable? epoxy bondable? or j
Electronics Forum | Tue Apr 27 15:57:44 EDT 2004 | Don Ackerman
We are a capacitor manufacturer. After crimping, we inspect the case length with digital calipers. The harsh environment (acid) destroys the calipers. Has anyone found chemical resistant measuring devices that will withstand this hostile environment?
Electronics Forum | Fri Apr 30 12:14:03 EDT 2004 | Bryan She
In addition,the transistor is SOT23 packeage.it seems that after the reflow excursion,this parts was damaged.but...why this damage only happens on the same location on board?Maybe,i'd like to do a cross-section of the damaged parts. it looks strange.
