Electronics Forum | Sat Dec 18 01:42:57 EST 1999 | sin
Do you have strong technical support team that have related experience SMT EQUIPMENT in your company? If you do, use machine would be alright. If you don't, you need to hire afew because even with brand new machine, you still have a problem either
Electronics Forum | Thu Dec 16 20:55:09 EST 1999 | TNT
Hey Henry, Tombstoning can result from many different conditions: 1. Look at the part placement under a microscope before the board has been reflowed. Is it centered perfectly on the pads? If not, the part might migrate towards one pad during reflow
Electronics Forum | Mon Dec 13 05:43:27 EST 1999 | Wolfgang Busko
Hi Steve, 20 mil pitch shouldn�t be that problem nowadays. In your case bridging and poor wetting seem to go hand in hand. For the poor wetting try to eliminate it by using different paste (higher activated) and work on your profile. Coplanarity also
Electronics Forum | Fri Dec 10 17:08:51 EST 1999 | John Thorup
Tell those leads not to be drinking so much. Anyway... too bent to work in a sequencer or auto insertion machine is a lot less bent than if you're trying to manually stick it into a hole. As far as where the lead exit/enters the body of the compone
Electronics Forum | Thu Dec 09 17:29:15 EST 1999 | Russ
Mike, It sounds like you have a serious problem, I don't know much about drag soldering or what your specific soldering problem is with your present supplier. I do know that with a conventional solder machine these leads won't even make it through
Electronics Forum | Mon Dec 06 13:32:47 EST 1999 | Bob Smith
CPk is a measure of the process variance with respect to the acceptable upper and lower limits. In your case it would be the accuracy of placement. The exact position of a chip ideally would be dead centre on the pads however in real life that positi
Electronics Forum | Mon Dec 06 08:55:11 EST 1999 | Dave F
Vinesh: The white residue is perfectly expected, when washing a no-clean with water (and some alcohol). In some cases, the white resin that you are seeing can be removed. Your paste supplier should be able to provide details. Recognize that clean
Electronics Forum | Wed Nov 10 06:32:20 EST 1999 | Lee Radney
We lost the video on a touchscreen monitor that goes in in our HSP 4791 machine. The touchscreen still works but the monitor portion is dead. The monitor is a Mitsubishi Model number XC-1498C II... The Microtouch numbers are as follows....Model #
Electronics Forum | Tue Nov 09 17:26:13 EST 1999 | Dave F
Horace: You weren't real specific about the set-up of the two machines. So what's the diff man?? Big dross generators are: 1 R Woodgate says that pump speed is the biggest driver to dross production 2 Chrys uses low dross cast bar: Alpha HiFlo 3
Electronics Forum | Tue Nov 09 11:42:37 EST 1999 | Dave F
Jeff: Try this: ROSA. John�s spot on. I�ll add that it is a fluxless method that reduces the oxides in an aqueous solution. Another source of information is: Trench, M., Hillman, D., Lucey, G., "Environmentally Friendly Closed Loop Soldering,"
