Electronics Forum | Fri Sep 02 05:10:21 EDT 2005 | pyramus
Hi I just would like to ask some assistance how to convert a line using a leaded process to a lead-free process? Is there a need for us to change any equipment? printer/reflow? Currently, we are not yet in full 100% lead-free process yet so most lik
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.
Electronics Forum | Mon Apr 24 19:18:40 EDT 2006 | sessioc
OK guys here is the skinny..... > > We need an > oven that can handle lead free temps without > slowing the belt speed under 28 or so in. per > min. > > BTU tells me that they don't recommend an > oven that maxes any less than 350 C. > > Is an
Electronics Forum | Fri Sep 30 16:05:03 EDT 2005 | OEM Manufacturer
Does anybody know of any standards that are > available that cover how many times a part or > complete unit can be reworked before it is > considered to be scrapped? > > I am currently > writing a process to review this with a > supplier. > >
Electronics Forum | Thu Sep 22 10:48:08 EDT 2005 | Rob
Cheers Greg, It's unusual to have such direct access to manufacturers & their opinions. I'll tell you what really does get us, and splicing doesn't work well on these occaisions - big SMD connectors, requiring deep pocket feeders. You only get m
Electronics Forum | Tue Sep 20 17:09:14 EDT 2005 | hly
I have a situation with hot boards with fine pitch BGAs that I need to build. However, there is a big problem--the auto screen printer is down. I decided that we would use the stencil and manually line up the pads and do a manual print. I can't ac
Electronics Forum | Fri Sep 23 04:12:11 EDT 2005 | siverts
Installation/set up of the component shuttle is critical. The shuttle must be perfectly squared and leveled, since it has a 4 spindle pick/place head on it. This shuttle head can pick up to 4 comps. from the shuttle feeders (gang pick) and will deliv
Electronics Forum | Fri Sep 30 03:36:39 EDT 2005 | pavel_murtishev
Good day, 2D inspection requires correct adjustment. In the other case it will cause continuous problems and false alarms. Adjust the lightning first and choose the correct process limits second. Look at histogram when you are adjusting the camera
Electronics Forum | Fri Sep 30 10:13:54 EDT 2005 | Cmiller
We are having a random problem with boards bowing significantly. Its a large through hole board with only one QFP on it. The bowing occurs during the SMT reflow. The only conclusion I can come to is a problem at the board house that made it. I just w
Electronics Forum | Tue Oct 11 13:25:41 EDT 2005 | Sean Jiam
Hi, We just purchased the above two machines and they're still in the trial period. We have problems with air requirements of the above two machines. For example, Samsung CP45 is listed at 8 CFM only, but it will kick off the compressor (rated at
