Electronics Forum | Sat Sep 10 17:12:18 EDT 2022 | yannick_herzog
Hello, we use an oven to dry our MSL components after the floor lifes expires. The oven works at 40°C / 0.1% RH. The plan is to upgrade the oven from 40°C to 60°C to shorten the duration of the process. I have found a number of articles mentioning
Electronics Forum | Thu Oct 05 17:05:36 EDT 2000 | JAX
These types of foil kits work just fine as long as they are used before expiration. Scraping off the epoxy coat gets a little tough on fine pitch pads and etches. I have always like to use a solder sample board to retrieve my bits & pieces from whene
Electronics Forum | Tue Apr 24 20:26:00 EDT 2001 | kcw
We solved similar problems some time ago. Check the volume dispensed or printed. Also check that the glue or solder paste has not expired and if in doubt use a new cartridge or change supplier. Ensure the Z axis stroke and placement force is corre
Electronics Forum | Mon May 18 22:55:36 EDT 1998 | Jerry
Earl, I admit that I missed your article since I seemed to have let my subscription to Circuit Fabrication Magazine expire. I am interested in your experience in this area. Is there a way to get a copy of your paper? Could you maybe post it to a w
Electronics Forum | Tue Jul 16 21:35:48 EDT 2002 | davef
Reworking used paste. We do not rework or reuse used paste, because we have no experience reformulating paste or controlling the process. Squeegee life. We do not use squeegees with damaged blades. After that, if we can fixture them and get good
Electronics Forum | Mon Dec 02 12:33:45 EST 2002 | blnorman
Shelf life dates are normally conservative. Years ago we would "requalify" adhesives by running lapshear tests. Don't know if Loctite has a "requalification" test or not. I do know that we have used Loctite chipbonders that were over a year out of
Electronics Forum | Mon Dec 02 16:55:49 EST 2002 | steve
On a lot of Loctite products there is a shelf life stated via a lot number on the bottle. It has been my experience as a distributor that Loctite will in most instances re-certify a product for an extended period of time, sometimes up to a year based
Electronics Forum | Mon Dec 09 08:43:22 EST 2002 | MA/NY DDave
Hi I am glad Dave replied, I think I might have even met him at some presentation. The problem I have seen and I am sure Dave, is that some users have some shoddy practices, storage etc and then look to the adhesive supplier to cover their mistake
Electronics Forum | Mon Jul 26 21:25:19 EDT 2004 | KEN
I have seen as little gain as 2 months and even up to 6 months additional time to end-of life. Treat solder paste as a perishible item. Note DOM and Refridgeration life and expiration periods. You guys crack me up....now when ever I go to 7-11 I'l
Electronics Forum | Sat Dec 18 15:23:05 EST 2004 | grayman
We used to add flux on a "expired" solder paste but we discontinued as there are many problems and customers complaints coming from our American customer. Like unwetted solder pads,dull and cold solder and many others. The profit is really ok but qua
