Electronics Forum | Wed Nov 29 10:10:50 EST 2006 | M. Sanders
I'm sorry, Dave - I didn't make myself very clear. Yes, this space (not really a "gap") is filled with solid solder. For instance, if you place a gull-wing component in solder paste, after reflow, there will probably be a thin film of solidied solder
Electronics Forum | Thu Nov 30 15:19:56 EST 2006 | CK the Flip
Mike, dude, I feel your pain. Hearing stories like this makes my blood boil! It's almost as ridiculous as a customer who told me to put more solder paste on a MELF component to overcome noise issues - he used more solder paste as antennas to overco
Electronics Forum | Tue Nov 28 15:10:50 EST 2006 | M. Sanders
Unfortunately, I don't have a copy of IPC-A-610 D on hand, however, I believe in IPC-610, this �floating height� between lead and pad has no maximum specification restriction. As long as there is no voiding, it is still acceptable for all 3 classes.
Electronics Forum | Fri Oct 12 09:17:12 EDT 2001 | mikecampbell
Hello, I need some advice. I want to create apertures in my stencil for a IBM CCGA. I've heard the standard is 4800 cubic mils of paste per aperture. I usually use a 5mil stencil for this type of product. There is no way I'll get enough paste wit
Electronics Forum | Tue Nov 30 21:23:55 EST 1999 | cklau
hello; When we are doing component land pattern design , one thing will always be in our mind; that is the basic criteria or common land pattern design guideline for reflow and flow solder assemblies. For basic fomula in calculating resistors are:
Electronics Forum | Wed Feb 09 12:31:54 EST 2005 | russ
We are not doing this right at the moment but I have done it with great success. Of cource it depends on your pad layout we have a 20 mil gap in between pads, we printed at 10 mil wide with a 5mil stencil. I will try to find the glue we used, I kno
Electronics Forum | Thu Jul 06 13:36:37 EDT 2006 | SWAG
We've had much trouble with flex circuits. As previously mentioned, you must have local fids for the board or the BGA itself (if panelized). Other troubles we experience are drilled holes for pinned connectors. Unless the PCB manufactur has some w
Electronics Forum | Thu Sep 05 23:18:03 EDT 2013 | feiyangniao
There is a new toy I received today: a NeoDen TM-240A automatic desktop pick and place machine! I’ve kept my eyes on this baby for a quite a while, and finally decided to make a purchase last week. The shipping was very fast: DHL from China, a total
Electronics Forum | Wed Sep 24 08:34:57 EDT 2003 | stefwitt
Even when you run a board several times, the machine may not make the same travel path every time. This in itself does not create a problem, but the vacuum on the nozzles could be different, dependent on the configuration of components on the heads.
Electronics Forum | Fri Sep 13 15:39:54 EDT 2002 | DANIEL
Are there very many companies that send there smt components out to be put on tape and reel