Electronics Forum | Sat Jun 12 16:33:52 EDT 1999 | JohnW
| | Our company is experiencing cracked caps at our pick and place operations. The caps are being placed onto epoxy dots for subsequent wave solder operations. At present, be have set the pressure of the head at 2 in/lbs. This being down from manuf
Electronics Forum | Mon Jun 07 20:06:45 EDT 1999 | Frank
Thanks for the clarification! So in generic settings what are the normally the components with the smallest pitch? Will a machine with 20 mil capability handle almost anything? | | I was wondering what measurements are used to define pitch? | | |
Electronics Forum | Tue Mar 16 09:53:27 EST 1999 | Ben Kirk
| I am looking for the dimensions of the qfp trays. I need to no the center to center as well as the edge to center. I will use this information to program the fuji QP machine for placing 44pin QFP from the tray, or other devices. I can measure this
Electronics Forum | Tue Aug 07 21:17:24 EDT 2001 | davef
This provides LT 3 misses /1M hits. * Probe all points on one side of the board. Bonus => This lower fixture cost. * Test pads and vias: GT 25 thou from other land traces. * Small [LT 5 ohm] resistor measurements: Use two pads at each end and do 4-
Electronics Forum | Thu Apr 15 10:58:16 EDT 2004 | mwg9184
I am trying to put a center support on a wave solder machine for lead free soldering. My problem is that every metal I use is interacting with the lead-free metals and thus eating away the center support. I have tried titanium, stainless steel. I am
Electronics Forum | Thu Feb 22 11:33:24 EST 2007 | sliebl
We recently added an SPM printer to our SMT department and I need to buy some tooling pins and center supports. Other than MPM, is there any aftermarket support for this machine? Can anyone point me towards any suppliers for the above mentioned parts
Electronics Forum | Mon Nov 19 13:13:51 EST 2007 | hegemon
We have found differing results based on the pattern used when reducing to total % of solder paste on the center pad. We arrived at 68% coverage on the center pad, and 1:1 for the perimeter pads. To get the 68% coverage we used a number of differen
Electronics Forum | Wed May 26 16:57:00 EDT 2010 | rgduval
Louie, We'd be interested in your experience with the stainless centering jaws. We just ran a job with heavy 0402 placements, and had a rough time with it. After much work on the package, magazine centering, etc, I've concluded the issue is the ce
Electronics Forum | Wed Nov 17 14:58:04 EST 2010 | otipicni
Hi everybody. I need to calculate the moment of inertia of a pcb (with its components) and also its center of mass. The pcb is not manufactured yet. Before that I need to verify those properties. How could I do? The pcb will weight around 50 g. Shou
Electronics Forum | Tue Nov 15 15:37:05 EST 2011 | comatose
I have a new (to me) Vitronics XPM3 oven which we're hooking up. It requires 480V, and I only have real 208V in the facility. I have a transformered up 480 subsystem, but its corner grounded rather than center grounded. The XPM3 manual suggests tha
