Electronics Forum | Fri Dec 17 14:13:18 EST 2004 | Claude_Couture
I have done this several times in order to save my butt: adding liquid flux in a jar of not so fresh paste, stirring it slow for 2-3 minutes, to make it usable. Of course, use no-clean flux for no clean paste, etc. During one production slow-down,
Electronics Forum | Fri Apr 04 08:49:45 EDT 2008 | ck_the_flip
Define "expired" though... 1 week? 6 weeks? 1 month? 6 months? Unrefrigerated life is generally 30 days. If paste has been stored refrigerated at manufacturer recommended temperatures, what would you guys do, like say, if you owned your own shop
Electronics Forum | Thu Apr 29 17:35:17 EDT 2004 | Shinmoto
Hi there, We place FBGA packages on a lot of our memory modules. Our stencils have .013" square apertures and a .005" foil thickness. We are using a type 4 paste from Senju Comtek. The price difference is not that significant and readily available
Electronics Forum | Thu May 11 11:25:56 EDT 2017 | davef
Key to Rosin Fluxes [from SUPERIOR FLUX & MFG. CO.] Type R (Rosin): Non-activated rosin flux for soldering copper. Residues are non-corrosive and non-conductive. Type RMA (Rosin Mildly Activated): Mildly activated rosin flux that contains no chlori
Electronics Forum | Tue Dec 21 11:46:29 EST 2004 | KEN
Are you adding liquid flux? Or paste "Gel" flux? If liquid flux: This, in my mind, is an unacceptable technique. Why? 1. Can not control metals content. 2. Probably not adding the same chemestry flux...as paste flux has many different addi
Electronics Forum | Tue Apr 13 08:25:15 EDT 2004 | arcandspark
I would have gone to a .004" stencil but again, the board designers, which we have no control over or are we allowed to give input to, have made the pads on all connectors and many other parts so small that we are almost seeing insuffecient solder us
Electronics Forum | Wed Dec 17 15:08:08 EST 1997 | David L. Harris
Need help determining the size / $ value of the stencil market in North America. Can you offer suggestions as to who or where I can go to get a grasp on this data??????? Thanks for any help.
Electronics Forum | Fri Mar 07 14:52:09 EST 2003 | caldon
Any company reclaiming desired metals will be interested. Some of the companies also take used PCB's for the metal content. It is not very profitable but does help. Metal reclaim companies can be found on the net. One company that might be interested
Electronics Forum | Tue Apr 13 13:23:26 EDT 2004 | babe
A PS to the above, it never hurts to ask for samples from vendors to see if the product works first. You did not hear this from me though.
Electronics Forum | Fri Apr 30 15:13:55 EDT 2004 | SWagner
You could comprimise on the E-Fab stencil and buy a laser cut nickle, it will have similar release characteristics to an E-Fab and only costs $600, they can be purchased from Stork Veco, they are located in Europe.
