Electronics Forum | Mon Jun 22 19:17:07 EDT 2020 | bmalhi
There are many things that can cause this and several solutions. Suggest having Heller Service Tech come in put some thermocouples at various points and determine the best course of action. If in-person visits are not possible at this time, we can wa
Electronics Forum | Mon Jun 17 21:16:19 EDT 2002 | davef
You�re correct about J-001. It�s interesting though, I find no references to controlling temperature and humidity as an element of an electrostatic discharge control program in the following: * ANSI/ESD S20-20 * "ESD Program Management" by Ted Dan
Electronics Forum | Wed Mar 24 12:34:33 EST 1999 | Scott McKee
| Hi, | I have a customer who's electronic assemblies produce RF. He is insisting upon aqueuos cleaning. We switched to a no clean solder years ago and no longer have an aqueous system. | Is aqueous cleaning necessary to eliminate 'cross talk' of
Electronics Forum | Tue Dec 26 15:22:43 EST 2000 | Hussman
Vickij, Why not try using regular temp. paste for both sides? Unless you have some real heavy parts on both sides, you can run a double-sided reflow process with most boards. I myself like to place R's and C's first (or bottom side) and then do an
Electronics Forum | Tue Mar 20 20:14:40 EST 2001 | davef
Electroplating [electrolytic] and dipping [HASL] are the two methods for applying solder coatings to features on boards. Disadvantages of electroplating lead / tin are: * "Weak knees" created at the edge of plated through holes. [I used to get weak k
Electronics Forum | Wed Apr 04 08:57:13 EDT 2001 | Cal
IPC-TM-650 is a works well. Ionic conductivity is a good rule of thumb but I prefer ION Chromatography this will help determine the residues left behind from the fab process. There are a bunch of ways to determine solderabiltiy- Wet Balance and SERA
Electronics Forum | Tue Aug 14 21:16:58 EDT 2001 | mugen
Dave, Do u talk with a whistle then? *grinz* Anyway, thanks for the detour down memory lane, it reminds me of my childhood, A friend and I, stuck a lawn mower motor unit, to my bike, to determine how fast a bike config, could run? It worked alrigh
Electronics Forum | Tue May 14 20:43:55 EDT 2002 | davef
I feel as though I�ve just walked in to a bar, where everyone I was supposed to meet has been drinking for 3 hours. First, the volume of water displacement thing doesn�t make sense, as others have commented. Second, I believe Dave Robbie wants meas
Electronics Forum | Fri Dec 27 13:41:00 EST 2002 | Garth
I allow my staff to wear them and apparently I must have the best staff. I have never had to supervise the issue. I have never seen an employee wear them when they are running the line. I have never walked past somebody and been able to hear whate
Electronics Forum | Fri Sep 26 14:37:23 EDT 2003 | davef
Steve: Thanks for all your contributions to SMTnet. It just goes to show that geologists aren't as bad as they say. Since we can't pillage your office as you're walking out the door, before you leave, would you send all those design standards that
