Electronics Forum | Mon Mar 08 21:53:48 EST 2010 | aungthura
We have been using a manual printer for both epoxy and solder paste.Now, our buyer asked us to replace it with 2nd hand SMT SL 2220 stencil printer.Our board size is usually 450x550mm and thousnds of compenents.I want to know that some1 has used this
Electronics Forum | Fri Mar 15 16:26:04 EDT 2013 | hegemon
Mask the pad on the PWB using liquid solder mask. Cure the mask and away you go. Use a mini stencil and a squeegee to maintain planarity and minimize issues at paste print. We have used this technique before. In other cases we have masked the bott
Electronics Forum | Mon May 13 08:31:48 EDT 2019 | robl
Do you have in line 3D Solder Paste Inspection machines? If not the 2D inspection on the SP710 is very slow & not a patch on Hawkeye from DEK. If print time is not an issue then it doesn't matter. I have had both types of machine, and personally pre
Electronics Forum | Wed Aug 07 17:55:33 EDT 2019 | slthomas
You should be well within area and aspect ration guidelines with that. Are you printing and placing close to center on the pads? Sometimes operators will "bump" the parts to center them on the pads if they're not placed correctly, and if they've bee
Electronics Forum | Tue Aug 29 07:10:14 EDT 2000 | Vinesh Gandhi
Hi All, As fas as I have read about AOI systems they all talk of being used at POst paste printing, Pre reflow or post reflow stages. Is there any AOI equipment available/being used which can do the soldering inspection of a complete PCA for SMT as
Electronics Forum | Thu Sep 12 09:12:22 EDT 2002 | mhoughton
I have printed and placed similar devices in high volume with exactly this spec for a couple of years with no problems, are you using laser cut stencils and what type of solder paste are you using? and what is the end use of the product as it may nee
Electronics Forum | Fri Nov 08 17:49:04 EST 2002 | davef
Questions are: * So, what is your thinking on this "insufficient contact causing intermitten failures"? * How do you print the paste? * Where do you place your therocouples when measuring reflow temperature? * What kind of solderability protection is
Electronics Forum | Wed Feb 23 09:33:03 EST 2005 | rlackey
Hi, Does anyone have any experience of using electrically conductive adhesives, including info on the following? 1) Autodispensing/screen printing 2) Curing temps/profiles 3) Quality/conductivity of joint 4) Product recommendations Our customer w
Electronics Forum | Wed Oct 19 13:32:12 EDT 2005 | shk5678
I have a couple of customers I showed this to and they were impressed with the capability but didn't know the price yet. Reason being was the control of the amount of paste applied to the pads could be adjusted. They both said they had problems with
Electronics Forum | Tue May 02 15:43:06 EDT 2006 | bhall
Thank you PWH, All good points. I use a semi-automatic printing process not a screen printer so if more solder balls and beads are created then I would be creating more re-work and that is exactly what I do not want to do. I guess the best thing to
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