Electronics Forum | Fri Jun 06 13:03:01 EDT 2014 | asksmt
Hi All, i have footprint 2X5 RA HEADER 2MM spacing in design. I am using about 9 mils of annular ring on top side and about 12 mils of annular ring on bottom side. refer picture attached. we are having solder short issues during wave solder so was
Electronics Forum | Wed Jun 11 11:40:12 EDT 2014 | rgduval
As has been mentioned, it's likely that the component is moving in the tape, and flipping over. It is not likely that the pick/place operation is causing this. What I haven't seen mentioned is that there is an acceptability criteria in IPC for inve
Electronics Forum | Sun Jun 22 13:24:49 EDT 2014 | davef
I don't know. We never had craziness like this before lead-free. You should have the yellowish-metal analyzed to be sure. Guessing: You're seeing this color on the terminations of components, not on the bulk of the SnX solder connection. If that's
Electronics Forum | Wed Jun 18 18:58:10 EDT 2014 | ke6zoy
Hi All, We leadform components for our assemblies in house and have been tinning the leads using a dip methood by hand into a solder pot. by just handling the components during the tinning and cleaning process we are at times damaging the parts/lea
Electronics Forum | Wed Jul 16 14:13:17 EDT 2014 | alexeis
Hi, If you can not rely on your programmer and the tools he uses then "double checking" can save you only materials but in time you really do not save often extend meaning. There are things you can identify before the stove, but if you use tools li
Electronics Forum | Sun Sep 21 15:48:48 EDT 2014 | gascon5383
Our company has a process standard that requires a double person check at the beginning of every run (size of run is irrelevent, whether 20 panels or 500 panels). Every changeover that occurs a first piece inspection is made before reflow. If all is
Electronics Forum | Mon Jul 21 06:18:15 EDT 2014 | digar
We had this. The anti-backlash nuts were binding. > We took them apart, chased the threads with a tap > and re-assembled with slightly less pre-load. > Hasn't been a problem since. > We had this. The anti-backlash nuts were binding. > We took t
Electronics Forum | Thu Jul 31 14:58:06 EDT 2014 | rgduval
If it has been determined that it is definitely the relays (and not some other circuit device), you'll want to get the vendor/manufacturer involved for some failure analysis. They'll cut open the components, and try to figure out what's going on in
Electronics Forum | Wed Jul 30 00:47:10 EDT 2014 | matusov
Hello gurus, I am a hardware designer with a small company. We are about to send a new PCB for fabrication. This board uses dozens of tiny QFN, DFN, and similar packages. As a final check I have been going through the datasheets of all these parts t
Electronics Forum | Tue Aug 05 05:27:53 EDT 2014 | philc
Another interesting response! The PMTech machine looks interesting, but I doubt we will get clearance to spend this amount for a machine that doesn't get used several times daily. I wonder how much the Blundell machine is? Anyone have a costing for
