Electronics Forum | Wed May 12 10:15:29 EDT 2004 | gabriele
Hi Dave, I've got it, many thanks. Snow ? My village is located latitude GMT + 1 hour,and about 45� north longitude. 30 Km north the mountains are still fully covered by snow. Sea is about 3 hrs driving down. My Job?, EMS'engineer (ex)
Electronics Forum | Wed Dec 18 10:10:07 EST 2002 | davef
No, sorry not on "Dave's Bookshelf". My basis is a study done at IBM. I reference it here: http://www.smtnet.com//forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=4941&#Message19050 Responding differently, you're correct. If you have a
Electronics Forum | Mon Jan 20 22:39:46 EST 2003 | davef
Hi Stevo, Most paste suppliers say something like, �above 183*C for 45 to 60 seconds.� The problem we have with statements like that is that they seem to assume that the pads, component leads, and solder paste are all near eutectic 60/40 solder. A
Electronics Forum | Wed Mar 12 16:04:24 EST 2003 | O' Connor
Everybody thanks for all your help, the problem has been solved. Before I describe the solution I've got to own up, I'm the PCB Design Eng., The Process Eng. lobbed this problem onto my desk last week, said the problem lay with the PCB finish, whats
Electronics Forum | Thu Apr 17 17:38:57 EDT 2003 | Takfire
Dave, I am not exactly sure what is driving them to believe that this is a capacitor issue. It is unfortunate, that this belief has slowed their activity in further understanding their manufacturing process. The caps are BME (Base Metal Electrode
Electronics Forum | Thu Apr 24 08:47:33 EDT 2003 | davef
Welcome back Jason. We like AmeriVacs. Could your sealer be out of adjustment [or whipped]? For suggestions contact: Francois Monettet; Cogiscan Inc.; W: 450-534-2644; fmonette@cogiscan.com . Francois participates in this forum [he's probably jus
Electronics Forum | Mon Apr 28 09:59:04 EDT 2003 | davef
Your customer's question is reasonable. Soldering to nickel is not always a walk on the beach [can of corn, or whatever]. This issue is flux not solder. Your Sn63 will have plenty of strength, providing the solder connection is well formed. You s
Electronics Forum | Tue Jun 03 13:01:16 EDT 2003 | Ramanandkini
We have some experience in manual application of conformal coating using a brush that too for small circuits espceially on the soldered pads. We use Chase corporation's Humuseal 2A64. This passes high humidity tests. I am also in touch with Lackwere
Electronics Forum | Fri Jun 06 18:44:26 EDT 2003 | davef
No, no. It's koscher to have thermal planes. You just need to: * Work with your fabricator to keep the layup balanced. * Relieve the plane so that it doesn't cause assembly problems. While probably not directly for your part, it gives a starting p
Electronics Forum | Thu Jun 12 08:45:40 EDT 2003 | stefwitt
Nobody seemed to notice, when Genrad started to collect license fee on used machines. These were different times and customers could effort the extra $ 15,000 software license fee. I totally agree with Jason that in these days, we turn the dime twic
