Electronics Forum | Tue Jul 10 18:03:49 EDT 2001 | pzohbon
Does anyone have a recommendation for a cleaning solution used in an ultrasonic cleaner for cleaning RMA solder paste off stencils and adhesive off pcb boards. I am going to be evaluating Armakleen 2001, Zestron Vigon SC 200, and Aqueous Technologies
Electronics Forum | Fri Jul 13 14:56:01 EDT 2001 | stevenamacdonald
One of our board vendors recently switched their stencil design to home plate apertures. Since the change the quality and yield of their PCB's has went south, Could this process change be the cause?
Electronics Forum | Wed Aug 01 06:52:25 EDT 2001 | Mark
please look at trying lazer cut stencils. They have trapozoidal shaped apertures and this could assist with the paste releasing onto y the PCB
Electronics Forum | Fri Aug 03 05:13:01 EDT 2001 | mugen
Well none of us, really know whether, this 0805 CAP is really an unsolder/tombstone defect, coz none of us verfied this with, our own eyes *duh* Funny, this only happened for us, on 0402 ~ 0201 SMD.... Check your land-pad design specifications, if
Electronics Forum | Fri Aug 03 11:09:23 EDT 2001 | Eric123
I have paste left on my stencil on the forward stroke. I adjusted the downstop pressure but it didn't help. Any suggestions.
Electronics Forum | Fri Jan 21 13:25:33 EST 2000 | Dennis _F
Im attempting to start a data base relating to stencil aperture reduction relationship to package types.Does anyone here have anything as such they would be willing to share? My direct Email is dennis.fowler@vmic.com Thanks in advance.
Electronics Forum | Tue Jan 04 17:54:37 EST 2000 | Josue Jacquez
Does somebody knows what should be the max acceptable height for the paste printing process using a 6 mils stencil?? I'll appreciate your help!!
Electronics Forum | Mon Dec 20 04:14:06 EST 1999 | Wolfgang Busko
Oh yes, that�s the thing with the PCB houses, always doing such things with our precious data and or wishes of the ideal paddesign. Without any aperture reduction we would have enough troubles with the PCB�s we mostly get. Wolfgang
Electronics Forum | Fri Dec 17 10:05:59 EST 1999 | Victor Salazar
You might want to check your paste application. We eliminated this problem with reduced aperatures, and homeplate designs on our stencil. The paste process is very important in eliminating solder balls. See Solder aperature guidlines in the forum.
Electronics Forum | Fri Dec 10 02:26:16 EST 1999 | Tracy Guo
Hi, I'm facing smear after printing on DEK288 using reverse squeegee at the edge of panels. I've checked the fixture, printing parameter, stencil, solder paste. What else can I do?
