Electronics Forum | Tue Feb 08 03:14:37 EST 2000 | Roni H.
Hi Jose, J-lead are very sesitive to coplanarity, which is the major cause for the defect you described. Other posibility is that there is not enough solder paste ; J-lead need around 10% more solder past then L-lead, You have to consider the screen
Electronics Forum | Thu Oct 14 23:10:20 EDT 1999 | Dennis O'Donnell
I once had similar problems. It went away when I switched to a different brand of solder paste. When I switched back to the previous brand of paste the problem came back. I don't know why but the solder paste brand made a difference. go to: www.
Electronics Forum | Mon Oct 11 12:25:02 EDT 1999 | Whitney Trepel
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 goin
Electronics Forum | Tue Oct 12 16:26:01 EDT 1999 | Jeff Sanchez
| | | | 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 a
Electronics Forum | Mon Oct 11 09:56:00 EDT 1999 | D Scott
A board shop rep contacted me about a process were solder paste is applied to the board as part of their mfg. process thereby eliminating the need for paste application at the assembler. This is a new one I have never heard of, but am willing to sit
Electronics Forum | Tue Feb 23 03:44:51 EST 1999 | K
| Can anybody give me the Pros and Cons of of using Cartridges over jars and/or vice-versa. Also, if using cartridges, what is the best way to keep the paste from seperating, short of buying a mixer that cost over $5000.00 | Thanks, | Bill | Inter
Electronics Forum | Mon Dec 14 13:16:11 EST 1998 | MMurphy
| DO you know of an Industry Standard that describes solder paste geometries requirements? | Check out www.alphastencil.com and select "Stencil Design Guidelines". This will at least give you an idea of how to deposit optimum paste volumes based on
Electronics Forum | Fri Jul 10 13:49:27 EDT 1998 | Bob Willis
I have some nice simple test methods that I will email to you this weekend thats one of the documents I must put on my site. | I am looking for some guidelines on evaluating solder paste. I am specifically interested in No-Clean Pastes, as they are a
Electronics Forum | Fri Jul 10 13:48:41 EDT 1998 | Bob Willis
I have some nice simple test methods that I will email to you this weekend thats one of the documents I must put on my site. | I am looking for some guidelines on evaluating solder paste. I am specifically interested in No-Clean Pastes, as they are a
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
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