Electronics Forum: electron (Page 6827 of 7901)

Screen printing Solder Mask

Electronics Forum | Fri Mar 04 17:19:31 EST 2005 | davef

Mrduckmann2000: Why do you want to do this? * Removing a non-washable / peelable temporary solder resist [TSR] is going become very tedious, because they do not release well from small / tight / isolated features. * Clay from washable resists will

Screen printing Solder Mask

Electronics Forum | Sun Mar 06 20:08:38 EST 2005 | mrduckmann2000

Davef, You have a good question. If we had perfect design engineers out there that would use the proper component spacing and not put SMT parts between and around thru-hole parts - glue and wave would work perfectly. I have done this with great su

Screen printing Solder Mask

Electronics Forum | Mon Mar 07 11:26:29 EST 2005 | mrduckmann2000

Pete, I was speaking to the Electrovert/Speedline/Camalot/Gemini factory tech's and App Eng's. I now have new machine files which slowed the pumps down to half speed, I have several needles....all of which still will not place a small enough dot.

Via-in-pad

Electronics Forum | Mon Mar 07 10:14:31 EST 2005 | jmedernach

Cellular and PDA architectures employ this technology all the time. You have to be careful with your board supplier as well as with your plugging approach. Leave the via unplugged, I guarantee voids in the solder joint. That leaves us with, "how d

MYDATA my9

Electronics Forum | Fri Apr 01 01:26:17 EST 2005 | Marv

A couple of things.. 1) The problem is more than likely on the magazine board itself (TC2), most likely the pal chip that stores the serial number and feeder information (you could swap this with a working magazine to verify) 2) The magazine connecto

Solder bath eruptions

Electronics Forum | Mon Mar 07 22:23:40 EST 2005 | mrduckmann2000

Ken, You nailed it! We have a Electrovert Vectra wave solder machine that will erupt solder all over the place while heating up, we had to disable the timer because of all the solder splatering. Electrovert told us that our machine had a small des

Sn99 Cu0.7 Ag 0.3

Electronics Forum | Mon Mar 07 09:14:04 EST 2005 | Rob

Hi does anyone have any experience of running Sn 99 Cu0.7 Ag 0.3 solder in their waves? Also is there any reliabilty data available? I think it may also be called C7A3. All I can find is a brief mention in a table in IEC 61190-1-3 2004, and on a pr

Solder dust

Electronics Forum | Tue Mar 08 09:56:05 EST 2005 | caldon

Tim- You have two separate issues 1) Stencils and 2) wave. Stencils you can purchase a ultrasonic system that will remove the paste automatically or you can use stencil wipes to remove it manually. I would refrain from using towels and IPA as it dilu

Solder dust

Electronics Forum | Wed Mar 09 08:23:31 EST 2005 | davef

We don't have experience on this, but first we'd talk to a technical type at our solder paste supplier. Baring that, we'd: * Soak a paper towel in a 'solvent' [ie Kyzen XJN, EnviroSense Enviro Gold, Petroferm Hydrex, etc]. * Place the towel in conta

Pick and Place Machine Validation

Electronics Forum | Thu Mar 10 14:50:56 EST 2005 | russ

Rob, Fantastic! I sure wish we would have put our requirements into our last P.O. The G.M of the manufacturer of this machine flat out promised and guranteed a certain CPH after reviewing the products that we would be producing. When the machine w


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