Electronics Forum | Thu Jan 03 08:02:48 EST 2008 | dstevenson
hi all and a happy new year, does anyone know if there are any industry best practices for board design in terms of selective soldering?? Whilst right now the product portfolio of my company is not suitable for the introduction of a selective solderi
Electronics Forum | Mon Jan 14 02:22:51 EST 2008 | ilona
David, why not contact the current suppliers of selective soldering systems for a copy of their layout specs? Surely we all would be interested to provide potential customers with the info they need to evaluate a process applicabilty or to design bo
Electronics Forum | Tue Dec 02 18:29:23 EST 2014 | jorge_quijano
Hola, here is a question that may be answered by common sense, but I'd like to hear from you; I have a couple of SMT lines, and I'm constantly changing from leaded to lead-free process and backwards, so, I cannot dedicate one line for leaded and ano
Electronics Forum | Tue Dec 16 22:09:36 EST 2014 | deanm
The critical operations where cross contamination can occur is the paste printer, the touch up station and the hand soldering station. Hand insertion should not be a problem if the parts are kitted or issued with proper control. If possible I would
Electronics Forum | Wed Jul 27 09:58:05 EDT 2011 | davef
Pressure printing systems Conventional stencil printing techniques have fundamental limitations as regards paste handling: The volume of paste available for printing is limited, so frequent replenishment is necessary Paste is difficult to c
Electronics Forum | Thu Apr 26 16:43:16 EDT 2007 | Upper Management
Seminars and meetings are the best way to get a clear understanding of a machine's capabilities. I have found that the manufacturing engineers will oftentimes skew the results of machine evaluations with facts and data. In practice, I've found it
Electronics Forum | Mon Nov 04 17:29:34 EST 2002 | pjc
Cannot comment on "best buy". You'll have to determine what the better machine is for your application and duration of planned use. I suggest taking a field trip to each vendor's nearest demo facility with a few of your most hi-tech boards and stenci
Electronics Forum | Wed Sep 07 03:03:35 EDT 2005 | Milroy
I am engaged with SMT production and we are going to have a brand new SMT line and I am studing about the screen printing and I have seen most commonly used stencil thickness is 6mil and I need to know what is the best solder paste height we can achi
Electronics Forum | Thu Sep 08 03:40:59 EDT 2005 | GS
do not forget also wich Type of paste used( granulometry) if Type-3 ? Type 4? etc, it could change in final metal on your pads/joints. Regards GS
Electronics Forum | Thu Sep 08 01:58:08 EDT 2005 | darby
0. Any less and you are scooping the paste from the aperture with the squeegee blades. I'm not saying that either of these situations is a good or a bad thing, it's just that if you buy a 6 mil stencil, you are trying to achieve 6 mil paste height.
