Electronics Forum | Thu May 14 19:05:02 EDT 1998 | Mike Konrad
Dave, Ionic contamination testers are considered to be a valuable tool to determine the cleanliness of both bare boards and post solder boards. There are some instances when SIR testing is more suitable for determining cleanliness than ionic contamin
Electronics Forum | Fri Dec 12 10:28:30 EST 1997 | David Syracuse
I am interested in locating a water soluble resist mask that does not leave a residue after wash and is easy to work with during the screen printing process. I have tried the Alpha Metals 110 and 220 solder mask and have found that it does not leave
Electronics Forum | Sun Oct 17 09:27:58 EDT 1999 | Steve Restinetti (aka Bix)
Our SMT department uses Alpha Metals WS629 solder paste exclusively. Does anyone else use this paste and what do they think of it? I haven't evaluated other pastes yet and think that I'm sure there is something better out there. Feedback would be app
Electronics Forum | Mon Sep 20 14:53:24 EDT 1999 | Doug
I've had some trouble pasting a test board for a MicroBGA trial. Most of the paste remains in the stencil apertures. The stencil is 6 mil thick, laser cut and electo-polished. The apertures are 12 mil in diameter with 20 mil pitch. We are using Alpha
Electronics Forum | Tue Apr 06 13:11:22 EDT 1999 | Mike Konrad
I would recommend the following chemistries: Zestron Vigon SC200... Good but very $$$$ (703) 589-1198 Vertex (sold by Petrofirm and Alpha Metals)... Won't last as long as Zestron but must less $$$ (904) 261-8286 Kyzen... Also very good (800) 84
Electronics Forum | Tue Oct 09 14:41:13 EDT 2001 | mparker
I just realized my last posting has some incorrect references. Blame it on last nights sour mash! (St. Pauli girl didn't respond!) The article I referenced was found at the AlphaMetals website, a study done for AlledSignal, in conjunction with Churc
Electronics Forum | Wed Jun 26 13:30:41 EDT 2002 | Steve L
Thanks, guys. The solder paste we are using is a kind of prototype from Alpha Metal - more aggressive, long floor life, etc. The paste I used to solder PBGA was out of fridge for about 3 weeks. It was still good for our other Non-BGA products. Be
Electronics Forum | Tue Aug 27 08:12:35 EDT 2002 | jmaruska
Do you have some experience with solder paste WS1208. What is the "best" conditions for printing process? I mean type of stencil, apertures, squeegee. Do you have original data sheet of this solder paste? - life time, working time on the stencil, sh
Electronics Forum | Wed Feb 26 03:43:40 EST 2003 | alwil
We use an alpha metal stencil cleaner and was curious to find out what types of solvents and cleaners were used out there. It takes about 350-400 litres of fluid. I would be interested if there is something water based we could use. What types of ste
Electronics Forum | Thu Apr 24 09:41:55 EDT 2003 | caldon
You may want to contact Cookson Electronics as they are leading the surge on "LEAD FREE" You may want to post your question to Chyrs Shea at Alpha Metals (Cookson). cshea@cooksonelectronics.com She should be able to field your question and put you i
