Electronics Forum | Sun Jan 28 15:25:28 EST 2001 | Kelvin
Dear Chris, I suppose that you may contact Alpha Metals or Cookson Semiconductor guys. They offer several types of no-clean flux for flip chip application. I hope it would not be too late. Kelvin
Electronics Forum | Fri Jan 07 05:37:31 EST 2000 | Mark Alder
Hi Niel Manson of Alpha Metals U.K. did extensive research on this subject. He can be contacted at neilmanson@alphametals.cookson.com. Regards Mark Alder
Electronics Forum | Thu Mar 10 04:45:51 EST 2005 | Rob
Thanks for your help, & will look into Cookson as soon as http://www.alpha-frytechnologies.com is working again. Cheers, Rob.
Electronics Forum | Wed Jul 13 10:47:41 EDT 2005 | Tom
Thanks a lot folks! Seems like 1:1 in generally accepted. However Cookson/Alpha seem to be the only ones complicating homeplates to "roundy" instead of "triangular". I'll do some tests... Thanks again!
Electronics Forum | Mon Apr 26 17:31:14 EDT 1999 | Earl Moon
| Hey MoonMan, | | Did I catch in one of your fabulous threads that you're using Tetra stencils? I'm anxious to find out how you're liking them. | | We we're all set up to go to Tetras, then mgt decided to close down our factory - Dooop! "Foiled"
Electronics Forum | Thu Jun 11 07:28:12 EDT 1998 | smd
Before risking screwing up the alignment of the frame, and upon the advice of several SMTNET users, I decided to see if I could get away W. just changing the screws. I found screws with 2x the pull strength as Alpha's. But they didn't fit!! The Alph
Electronics Forum | Thu May 28 21:35:12 EDT 1998 | Soeurn Ses Top Line
| | | Does anyone use the "Quick Frame" with their Dek printer? | | The threads on the screws keep stripping, so we thought | | maybe we'd send our frames to a machine shop for heftier | | screws. Has anyone done this? Is there a better way? | | Isn
Electronics Forum | Mon Jun 14 12:16:03 EDT 1999 | Earl Moon
| I am looking into Alpha's system, and would appreciate some feedback from anybody using it currently. I am concerned about about the life expectancy of the foils if they are clamped and unclamped every couple of days, and what happens if one of the
Electronics Forum | Wed Jul 13 14:56:53 EDT 2005 | jdengler
I read the Cookson/Alpha paper "Optimizing stencil design for Lead-free SMT processing". I interpreted it to mean that if you had a mid chip solder ball (MCSB) problem the "radiused inverted home plate of 20/60/20 style" had the greatest impact on r
Electronics Forum | Sun Sep 27 22:39:55 EDT 2009 | rajeshwara
The same issue i faced 2 yrs before , i sugest 1. Use stencil of 4 mils ( Take care of Aspect Ratio and Area Ratio ). 2. Use Solder Paste of Type 4.5 and Viscosity in between 1100 to 1300. ( Try Solder Paste of Cookson or Alpha metals : OM338 T45-L
Nordson Electronics Solutions makes reliable electronics an everyday reality. Our ASYMTEK, MARCH, and SELECT brands deliver precision fluid dispensing, conformal coating, plasma treatment and selective soldering equipment.
2747 Loker Ave West
Carlsbad, CA USA
Phone: 18002796835
