Electronics Forum | Thu Oct 21 11:32:15 EDT 1999 | John Thorup
Larry Elaborating on the specific question, yes, the volatile solvents in the flux can and will evaporate. Evaporate completely in any reasonable amount of time? Probably not. What tends to happen is that the exposed paste dries on the surface and
Electronics Forum | Tue Oct 19 17:52:47 EDT 1999 | John Thorup
Hi Carol You can use a threaded standoff and put a screw through the board and into the standoff with the screw from the buss bar coming into the other end of the standoff. You should use a SEMS type screw or a internal star type lockwasher with a pl
Electronics Forum | Mon Oct 11 12:29:01 EDT 1999 | John Thorup
| We have three buckets filled with leftover solder paste from our screen printing process. Kester has informed me that they no longer take paste, but only dross and pot dumpings. Does anyone know if there's someplace I can recycle this, or am I go
Electronics Forum | Wed Oct 13 13:47:02 EDT 1999 | John Thorup
Jeff In my experiance the main problem is the flux content of the paste (up to 50%). throwing it in the wave pot results in a big stickey ring around the pot, a lot of smoke and, as Brian says, a lot of dross. A fire is not that unlikely! I tried
Electronics Forum | Mon Sep 13 13:54:01 EDT 1999 | John Thorup
| Please I would like to know alternative producer of cleaning tissues, squeegees and others smt accessories. | Hello Vincenzo Probably your best bet would be to get catalogs from a number of distributors selling this type of product. That way you
Electronics Forum | Tue Aug 24 15:15:43 EDT 1999 | John Thorup
| Could use a little help here. Can anyone clarify to me the cause and fix of chip caps/resistors tombstoning following reflow? | | Any help would be appreciated. Thanks. | Most common reason is uneven heating where one side of the component ach
Electronics Forum | Thu Aug 19 09:58:14 EDT 1999 | John Thorup
| | | we've received an inquiry if lead free solder for solder dips or surface mounting (cream solder) is available on a technical scale | Dr. Weber I'm not sure what you mean by "on a technical scale" but various no lead alloys are available in
Electronics Forum | Thu Aug 12 10:50:19 EDT 1999 | John Thorup
| Hello everyone, | | I would like to know more about the so called FACETED or "Mirror ball" surface apperance. Its cause and how to eliminate / corrective actions for it. | | pls. help... | | thanks and best regargs, | ...Omat | Omat While I hav
Electronics Forum | Tue Aug 10 11:44:20 EDT 1999 | John Thorup
| Does anyone use reflow profilers? Are they a good investement or is trial and error sufficient? | | Does anyone have any suggestions on profiles to try? Thanks. | Danielm I would hazard a guess that most if not all of us production folk do. I c
Electronics Forum | Tue Jul 13 16:26:55 EDT 1999 | John Thorup
| Does anyone have a US or North American phone and address contact for EKRA (Eduard Kraft)? | | I have been told by several people that there is a small office here in the US, but so far I've been unable to locate it. | | Any assistance is appre
