Electronics Forum | Tue Aug 18 10:11:04 EDT 2009 | grantp
Hi, Yes, I think this sounds like a form of tomb-stoning, and we used vapor phase until it ended up driving us totally nuts trying to deal with tomb-stoning. We tried everything, and all kinds of stencil apertures. Vapor phase is an amazing process
Electronics Forum | Thu Nov 05 09:50:14 EST 2009 | adlsmt
Before you buy a manual screen printer try to do it by hand. We hand stenciled boards with 19mil pitch parts for three years with decent results, with your parts it should be simple. lay the board on a piece of ESD bubblewrap, the kind with small bub
Electronics Forum | Fri Mar 26 11:50:47 EDT 2010 | rway
The programming time depends on the system you are using. I use YesTech. It has been a reliable system for catching the majority of production issues. The programming time on this system is around 20-30 min. with a full library, meaning you don't
Electronics Forum | Wed Dec 22 01:39:06 EST 2010 | boardhouse
Hi Johan, As a Asian board supplier - I would not recommend using Lead free hasl on any product that has BGA, you would be just looking for issues, flatness being the main. I agree with one of the other replies - Your purchasing dept. should not be
Electronics Forum | Wed Aug 10 16:37:35 EDT 2011 | davef
Yes, there are ways to machine process boards like this. The devil is in the detail. In no particular order, your choices are: Process flow #1: * Print chipbonder on the surface mount side for SMT parts * Mount SMT components * Cure adhesive, if r
Electronics Forum | Tue Sep 20 11:59:06 EDT 2011 | SheanDalton
Check specific gravity: According to a quick web search, the specific gravity should be 0.813 ± 0.003. If you have records of the specific gravity, compare current reading to past readings. Check pressure near stone: if you have records, compare
Electronics Forum | Tue Sep 20 14:03:53 EDT 2011 | russw
We don't have the equipment to check specific gravity, we just assume what's on the bottle is correct and we've never had a problem. The stone sits in an open chamber, so there really isn't any pressure to check. When we vary the air flow, the foam
Electronics Forum | Fri Nov 11 13:52:05 EST 2011 | SheanDalton
What is the size of the low standoff components you find trace wash effluent? and, what is the gap from the board to the underside of the component? If your component has a very low standoff, and/or, a wide footprint, you may want to consider findi
Electronics Forum | Sun Dec 04 02:20:20 EST 2011 | ngineer
I just got my hands on a Quad IVc, and am trying to find information on a Z-axis Error # 5 @ startup. I haven't really done anything since recieving the machine, I powered on, the Transport moves back and forth, the pc boots and I press enter to log
Electronics Forum | Mon Dec 05 09:04:25 EST 2011 | haiae
I just buy a used Contact 3AV machine. Afer fixed some things I think the machine can be ready to run and in fact for first time the machine power up, pass all self testing, homing is done, moving of table, heads, actuator is good, pneumatic function
