Electronics Forum | Sun Jan 16 01:50:39 EST 2011 | leo83
Dear All, I am looking for a guide /book on PCB assembly using SMT(Middle range, not high speed) which i could use for selection of Machines. If their is any research report , i am ready to pay for it. Highly appreciate any inputs. Eg: What shoul
Electronics Forum | Tue Mar 22 16:48:05 EDT 2011 | kmots15
We use an evaporator plumbed into the output of the stencil washer, it works great and reduces our Haz waste. You might need to get some form of permit first as this could be considered treating Haz waste in some areas, depends if you do Pb on your
Electronics Forum | Fri Jul 22 13:17:49 EDT 2011 | ehughes
I would be careful with trying Rain-X. Rain-X is a silanol treatment that is not durable. That is why you need to reapply it on a windshield many times. Also you could contaminate the paste as it will come off the stencil during the printing. From
Electronics Forum | Mon Jul 11 09:24:33 EDT 2011 | kahrpr
You need to check some other stencil places all the ones I deal with, Turn them around same day if I get the files early enough. Also i have a California stencil house which gives me 3 extra hours (east coast guy)I only pay extra for the shipping. Th
Electronics Forum | Mon Jan 23 22:53:31 EST 2012 | davef
= 0.66 aperture opening to the stencil wall has been shown to provide the best transfer efficiency and repeatability of the deposited paste. Values from 0.66 to 0.8 insure a good paste release from the stencil. The biggest impact on area ratio is the
Electronics Forum | Wed Jan 25 16:18:12 EST 2012 | wrongway
Your uising 6 mil thick screen on 0603 and sot-23 and you think you need more paste? when i use a 6 mil screen on a sot-23 and 0603 it is almost to much paste. 5 mill does just fine on those parts but if you think you need more paste then don't go t
Electronics Forum | Thu Jan 26 11:42:58 EST 2012 | davef
Here's what we hear you saying: * Trying to repair a printed circuit board assembly * There's a problem replacing a 57 pin, 20 thou connector * Can't get enough solder paste on the connector leads * Printing paste, replacing the connector, then reflo
Electronics Forum | Fri Jun 08 13:08:46 EDT 2012 | andydavis
We have a My500 at out plant. We are high volume and low to medium volume. It is a great machine and is a great solution to some problems that a conventional screen printer cant get around. For example, we have some producets that are not flat on
Electronics Forum | Thu Jun 14 13:12:53 EDT 2012 | scottp
I haven't been in a bad enough situation to try it yet, but I had a conversation with Alpha Metals when we started doing 0.4 mm pitch and they mentioned that if we got into a situation like yours we could send them a board and they'd modify the artwo
Electronics Forum | Thu Jun 14 21:48:41 EDT 2012 | kmots15
We work with a lot of larger boards over 24", haven't run into this issue yet. I agree with scott could be your board supplier if they are lower quality, from something as simple as unit conversions in CAD to dealing with different temperatures. A
