Electronics Forum | Thu Mar 09 05:44:07 EST 2000 | Wolfgang Busko
Hi Edmund, J-STD-013 "IMPLEMENTATION of BALL GRID ARRAY and other HIGH DENSITY TECHNOLOGY" should be a great help for you. Component manufacturers ( try Motorola via Internet) also give good advice. For the DFM aspects get in contact with your asse
Electronics Forum | Fri Mar 03 16:11:07 EST 2000 | cpitarys
Yes it is Ok and some folks ae doing it now, but unfortunatly IPA may not be the best solvent for this application. Take a small vial of the ipa and put some of your smt adhesive into it, shake it up and watch what happens, now step this up onto a l
Electronics Forum | Fri Feb 25 14:00:57 EST 2000 | Bill Schreiber
Dave is correct, a stencil cleaner is a good way to go. There is an article on our web site, by Dick Clouthier, that covers cleaning misprints with various types of stencil cleaners. Go to www.smartsonic.com and click on "Recommended Reading" to fi
Electronics Forum | Wed Mar 08 07:24:36 EST 2000 | Wayne Bracy
Scott Wish we could all quite showing our age and just enjoy the SMTNet. Most of us enjoy reading the responses and at times responding to issues that are important to all of us. Technical information is so important to all of us. Most of the Old
Electronics Forum | Fri Jan 26 08:28:59 EST 2001 | Sal
I am currently in the Process of setting up some SPC software on our Wavesoldering equipment. What I would like to know for each Parameter that is listed below what kind of variation from my average setpoint would cause defects.Example. If the averag
Electronics Forum | Mon Jan 29 12:52:32 EST 2001 | davef
BL is correct. The two issues are: 1 How thick are you putting the NC residues on your boards. 2 Some NC flux residues work with some conformal coats. Contact Graham Naisbatt [Concoat Ltd +44 (0) 1276 691100 Fax:+44 (0) 1276 69122 graham.naisbitt
Electronics Forum | Mon Feb 26 20:22:01 EST 2001 | davef
As a design rule, provide 0.050" minimum between parts to be "masked" and areas that require wave contact. The more the better is the general rule to apply. Check: http://www.autogroup.com/designguideb/ http://www.spprecision.com/ http://www.datumdy
Electronics Forum | Wed Mar 14 22:41:03 EST 2001 | CAL
There are also Process monitoring tools that mount directly to your blades and monitor the paste. Impedance Spectroscopy is the process monitoring theory behind the tool. It works by having good sample data logged that the monitoring tool can compare
Electronics Forum | Thu Mar 15 05:59:08 EST 2001 | PeteC
Good point. I'm having trouble with the words "electrical elements" in the J-STD. Is a marking an "element" ?? An upside down chip resistor is certainly not a defect in that it does not negatively impact product functionality or dependability. I sugg
Electronics Forum | Tue Mar 20 05:56:03 EST 2001 | peterbarton
'Durostone' is available in the UK in 2 forms. Conductive and non-conductive. The conductive version is known as type CAS761. We use: Rochling Materials Ltd Waterwells Business Park Waterwells Drive Gloucestershire GL2 4AA United Kingdom Tel: 01452
