Electronics Forum | Wed Jul 09 18:36:08 EDT 2008 | jmelson
Just to clarify, I tried to read a summary of the Oko institute report, but it was in some word processor format I wasn't quite compatible with. But, I did get some of it. It appeared to restrict ANY use of nickel (couldn't tell if that was in allo
Electronics Forum | Thu Aug 07 14:08:30 EDT 2008 | arminski
Can A Company or Electronic Manufacturing Company go for AS9100 certification if the Quality Policy states that we only meet IPC Class 2 Standard? I'm just very confused for I know AS9100 is an Aerospace Quality System and must meet IPC Class 3. thi
Electronics Forum | Thu Sep 11 09:59:47 EDT 2008 | rarnold
Paste stored tip down, so separation in the tube is not suspect. Remember that the defect was produced on a screen printer running with a Rheopump. A few more details are that the strip of the board containing the uncoalesced solder is consistent w
Electronics Forum | Wed Dec 24 11:23:22 EST 2008 | childs
I can't seem to locate any information/concerns about moisture entrapment in IC packages on the promary side in a double sided SMT assembly using water soluable solder paste when soldering the second side. A typical process would assemble/reflow/cle
Electronics Forum | Sat Feb 14 08:30:08 EST 2009 | smartasp
Thank you all for your valuable inputs. Have having done some more investigation we have realized that there is actually no standard as such to which the ROHS components have to be manufactured aside from the contains of substances like PB and al o
Electronics Forum | Sun Feb 08 18:03:26 EST 2009 | davef
Roland What does this thread in the current issue of SMTnet Express newsletter have to do with SMT? Coating Drug-eluting Arterial Stents Using Ultrasonic Spray Nozzles One proven method used to treat clogged arteries employs tubular, mesh-like met
Electronics Forum | Wed Mar 04 11:16:25 EST 2009 | patrickbruneel
From your description of the problem first reduced SIR to dead short is exactly what happens with dendrite growth. What is needed to form them is low bias voltage (10 volt range is ideal with low current), a surface, 2 conductors (containing tin), io
Electronics Forum | Fri Jul 31 09:12:35 EDT 2009 | gregoryyork
Dear Sean Contrary to believe MOST formulators of No Clean fluxes or No Residue fluxes use organic acides that are in fact weak and benign. IF the residue was left on the board and you had a condensing atmosphere then you may see some issue with fal
Electronics Forum | Thu Oct 01 07:03:55 EDT 2009 | davef
We doubt that Humiseal 1A33 is causing opens in your assemblies. We'd guess the opens occur earlier in the process, but are not hard failures. So, you pass your tests. When applied, the conformal coat flows into the gap in the ball crack and insulate
Electronics Forum | Fri Dec 18 09:27:51 EST 2009 | sforman1
Tom: Once again - why are you using solvent based conformal coating. 1B31 is OK as a CC but it contains Toluene and MEK!! It is only 35% solids which means you are trying to get rid of 65% solvent. If you must use it due to customers requirement then
