Electronics Forum | Mon Sep 09 07:51:00 EDT 2002 | yngwie
I don't know when I can get done with an old datecode material..anyway, thanx for the help guys. cheers.. zambri
Electronics Forum | Sun Sep 08 19:40:34 EDT 2002 | dasal
Would you be interested in a chemical free flexible packaging (bag) that extends the useful shelf-life of fabricated pc boards and surface finishes for that year or more? Let me know, and I'll get you all the technical details. Sincerely, Dave S
Electronics Forum | Wed May 29 09:33:10 EDT 2002 | Rick Grant
UP-78 FLUX PASTE RECERTIFICATION. We use small amounts of this flux and would like to know what is the best method of recertification when then shelf life has expiried?
Electronics Forum | Wed May 29 22:09:59 EDT 2002 | davef
Retesting is reasonable, but using paste the has an expired shelf life is dicey biz. * Use fresh paste * Buy in small containers Sure it's expensive to toss, but the price you pay in rework and defective product may be higher.
Electronics Forum | Thu Jun 20 08:23:19 EDT 2002 | davef
Either you need a stronger flux or the solderable surfaces need to be reconditioned. Most board fabricators don't do reconditioning. Search the fine SMTnet Archives for discussion on ROSA. EMPF is one place that does ROSA on a contract basis.
Electronics Forum | Tue Aug 13 16:51:50 EDT 2002 | swagner
Here are the answers to your questions. 1. Yes, some increase conductivity when the approach the end of their shelf life. 2. Yes, the manufacturer as well as the type. 3. Try burning off more of the flux in your preheat. 4. Yes, especially for QA.
Electronics Forum | Fri Nov 29 13:22:40 EST 2002 | fmonette
Here are the answers to your questions : The shelf life in sealed bag as indicated by the seal date is calculated to be a minimum of 12 months, when stored in a non-condensing atmospheric environment of
Electronics Forum | Thu Dec 12 09:35:45 EST 2002 | Randy Villeneuve
We are using Immersion tin in production. We specify Omikron-plus tin which according to the information is much better in solderability and shelf life than standard immersion tin. I am not having any problems with the finish and we are running it th
Electronics Forum | Thu Jan 16 13:41:27 EST 2003 | Adrian
Is there documentation showing shelf life for plastic surface mount devices ? This will of course take into consideration that all the nessecary ESD precautions with N2 dry boxes are in use.
Electronics Forum | Tue Mar 25 11:38:58 EST 2003 | MA/NY DDave
Hi O'Conner, You are more than welcome. If you found anything really great in the Archives Please give the info so that I can also read and continuously learn. YiEng, MA/NY DDave
