Electronics Forum | Wed Mar 27 16:54:47 EST 2002 | davef
STARTING RANGES * Pressure � 1 pound/inch of blade (metal); 1.6-3 pound/inch (plastic) * Speed - 0.5 to 3 inch per sec [for standard pitch]; 0.5 to 1 inch per sec [for fine pitch] Your paste supplier�s recommendation is a good place to start. * Sepa
Electronics Forum | Tue Apr 12 22:23:05 EDT 2005 | Al
The way we do this, is to tape a transparent film to the PCB. The printers and chip shooters can read fiducials no problems. Once it has been run through SMT, simply remove the tranparency film and the PCB is ready for use, no mess no cleaning and yo
Electronics Forum | Wed Jul 21 10:05:22 EDT 1999 | Mark Quealy
| | | I recently switched from solder paste in 500 gram jars to 500 gram tubes. I did this to try to limit the time the paste is exposed to the room environment. But we have a need to clean the stencil every 4 - 5 boards which means taking the bulk p
Electronics Forum | Wed Feb 23 22:38:28 EST 2005 | davef
We: * Cure 1B73 according to spec in a heat box, like a Blue-M * Clean nozzles [one set in use, one set being cleaned] in thinner in a bronson ultrasonic cleaner * Haven't evaluated coatings in years, but would do it according to J-STD-001C, Reqmnts
Electronics Forum | Mon Jan 29 14:10:19 EST 2007 | tonang
We use M/C printer Samsung SP400V with M/C setting : - Auto Cleaning time 15 ea - SQG down lenght (mm); Front 0.5 Rear 0.5 - SQG Presure Front 0.5 KG, Rear 0.5 Kg - Print speed Front 30 mm/sec, rear 30 mm/sec M/C reflow Heller 1707 EXL, with setting
Electronics Forum | Wed Jan 09 13:03:22 EST 2008 | patrickbruneel
Matte solder mask greatly reduces the potential for solder balls, and since you altered the machine parameters with no improvement it might be flux related. Do you use a VOC free (water based) or alcohol based no-clean flux? Do you use machine settin
Electronics Forum | Tue Jul 13 18:18:39 EDT 1999 | King Kong
Hi All, Does any one experienced the solder on gold finger after reflow. Its about 5 to 8 mils diameter . We'd clean the entire screen printer, mounter & reflow as well, but doesn't help much.
Electronics Forum | Mon Aug 14 05:45:16 EDT 2023 | dimamalin
First, this is the result of bad printer setup. Adjust knife pressure, PCB gap, separation speed, tooling, and stencil cleaning. Pay attention to the coating of contacts pad and height of solder mask of PCB.
Electronics Forum | Fri Nov 19 17:18:41 EST 1999 | Wayne S.
Hello, Going to be setting up a no-clean process for thru-hole components. Any guidelines i can use. Know the basics but want to make sure i am not overlooking any steps. Thanks Wayne Sanita
Electronics Forum | Fri Oct 23 12:48:08 EDT 2015 | pjchonis
WE offer Kolb MultiEx N7, a broadband pH neutral cleaning solution that can be used in an ultrasonic cleaner (Concentrate dilution ratio of 1:6). The MultiEx N7 is rated for cleaning solder paste, flux, colophonium and suited for stencils, PCBs, and
