Electronics Forum | Tue Dec 12 01:52:05 EST 2006 | hemu_me
As we have vitronics oven(SMR610A) made in dec,1997,which has 5 heating zones and 2 cooling zones. For Lead free soldering what should be our baseline for low/medium boards.we have gathered profiles from various paste manufacturers,however we don't k
Electronics Forum | Thu Dec 14 21:17:47 EST 2006 | Thomas
Hi,I apologize for my poor english. I am just wondering why this excellent site did not came out with any information about the server exchange, I asume that was the deal, because that was the info recievied back when one tried to logon? Anyhow, why
Electronics Forum | Fri Dec 15 00:20:17 EST 2006 | hemu_me
As we have vitronics oven(SMR610A) made in december 1997,which has 5 heating And 2 cooling zones. we just want to confirm that is there any possibility of damage oven parts with long run for soldering of lead free components in this model? if anyone
Electronics Forum | Fri Dec 15 07:40:40 EST 2006 | kvanzill
Thank you for the suggestions, I did change blades and we did try another printer, problem still exists and it is across several different products but only that line. One thought is aperature size since we over print for other reasons due to part d
Electronics Forum | Fri Dec 15 10:58:32 EST 2006 | pms
Yes we see this also....... It is what they call "cold welding" of the solder paste to the blades...... The solder spheres actually "weld" together...... It leaves streaks on the stencil, not a clean wipe of the stencil....... We have never found
Electronics Forum | Fri Dec 15 09:44:38 EST 2006 | mashmo
Hello I am a circuit board designer and just wanted to ask if anyone is seeing the need to alter footprints for ROHS assembly. I also wanted to make sure that I have this particular issue correct. If your BGA is lead free then used solder paste with
Electronics Forum | Fri Dec 15 14:42:35 EST 2006 | russ
we have has to alter some footprints to facilitate component rework/removal. We have some assemlies that have 2 oz and heavier copper, these boards require a lrger tip to melt solder so we have had to extend pads to allow the larger tips to touch pa
Electronics Forum | Fri Dec 15 11:06:06 EST 2006 | Gman
Hello All, Is Ionic Cleanliness testing using say an Ionograph on No-clean assemblies a valid test? If not, why? I understand factors like PCB cleanliness but is the 1.56ug/in2 IPC criteria valid for no-clean assemblies and can an Ionograph be used
Electronics Forum | Sat Dec 16 08:23:11 EST 2006 | pr
The "Wave optimizer" is a little pricey but is easy to use, gives instant feedback (display on the unit as opposed to hooking it up to a computer)and will give feedback on the waves, as well as preheat. They will send you a unit to trial for a week o
Electronics Forum | Mon Dec 18 13:00:47 EST 2006 | grantp
Hi, We have a white residue, which is visible, and we would like to have the produce clean as it's a PCI card, so users see the PCB. I am wondering if we need to install a cleaning stage to the line for these kinds of products. Can anyone give som
