Electronics Forum | Sat Mar 27 03:57:09 EDT 2010 | grahamcooper22
I agree with Steve. Your are too hot and too hot for too long. What is the device spec for Peak Package Temperature (PPT)? (this is usually on the moisture barrier bag) Many leaded BGAs have PPT of 225 Deg C. Even if it is higher, like Steve suggeste
Electronics Forum | Thu Jul 29 13:56:16 EDT 2010 | garciaga
Siemens recommended Special nozzle-03070148 and provided GF to place this component using Siemens s-25/27. It worked fine in the beginning but after a while we saw droppage. So we moved the set-up to F5 machine which is slower. Their recommended G
Electronics Forum | Wed Mar 31 06:08:45 EDT 2010 | miroyu
Hi everyone ! I started to program quad 4C for the first time and have some problems. First, board detection LED and proximity Led (on the front panel) are not lightning whatever I do! Second problem is I teach machine board size, nozzle locations
Electronics Forum | Tue Apr 06 14:45:52 EDT 2010 | stepheniii
You would be suprised what you can see with even a simple Xray machine. The engineers upstairs wanted to see if the xray could confirm there was an open via on a thin dense board with several layers. I thought (but didn't say) no way. But with carefu
Electronics Forum | Mon Apr 19 11:04:21 EDT 2010 | baildl632
We have had some unusual reflow conditions with BGA's as well. We did not come to the conclusion that something was covering the lands though. It typically occured with only the BGA lands (not the decoupling caps on the back side). We found that the
Electronics Forum | Fri Apr 23 13:00:35 EDT 2010 | dwonch
Hi all, The board shop finally got back to me with some results. They did find residue present on some of the pads. They have sent a board out for evaluation to learn what it is. Hopefully from that we can determine the root cause. The good news i
Electronics Forum | Wed Apr 21 17:50:04 EDT 2010 | joeherz
Does it have to be one for both 1D and 2D? We > scan barcodes we print with a 200 DPI printer > which works out to 5 mil wide lines with no > problem. 2D barcodes need a completely different > kind of scanner. > > I know there are scanners > th
Electronics Forum | Tue May 11 15:56:10 EDT 2010 | davef
First, you mix the paste in the jar with the centrifugal thing-a-ma-jig. Then what? So, how are you going to get the paste from the jar into the syringe [cartridge], anyhow? Are you going to use an Atlas Tool? How are you going to de-air the syri
Electronics Forum | Wed May 19 09:28:09 EDT 2010 | speedyuk
HI Im new to this but i thought i would have a go at fixing my xbox 360 be re balling it,ive managed to remove the gpu and take all the old solder balls of and cleaned it up,then ive put it in a re balling jig with the 360 stencil fluxed the gpu wi
Electronics Forum | Tue Jun 08 17:51:37 EDT 2010 | vmorina
Hi Vee, We are planing on doing low-medium volume and prototyping boards with the following packages. TQFP, BGA and other SMT packages. I would like to go with some thing like batch/tabletop oven for now, but I am not excluding conveyor reflow oven
