Electronics Forum: present (Page 7 of 117)

Cold Welding Phenomenon

Electronics Forum | Mon Mar 09 07:29:21 EST 1998 | Tom Mc Grath

Cold Welding I'm presently doing a project on reflow profiling. I came across this expression. Can someone please give me a definition. Best Regards Tom Mc Grath

Voids and BGA

Electronics Forum | Sun Mar 01 14:51:55 EST 1998 | Vincenzo Longobardo

From several months I am investigation about the VOIDS PERSENCE and his important as reliability. One question now is : It is possible that on the BGA components the voids are already present into the balls, before the mounting on the pcb ? If you ha

Looking for Specifications

Electronics Forum | Fri Dec 12 13:08:31 EST 1997 | Richard Hamilton

Hello, I am in need of finding any specifications that exist relative to presenting SMT parts for insertion or automatic handling. If you could let me know any ANSI, IPC, or other specs that are out there I would appreciate it. Thanks in advance!! Ri

Forum Archives Now Available

Electronics Forum | Fri Aug 03 14:45:42 EDT 2001 | neil

Whew! I finally finished the archives (and they weren't that bad). All postings to the smtnet forum from 12/5/97 to present are available and fully searchable. thanks for the kick in the @$$ dave, I needed it. -neil

SMT Classes

Electronics Forum | Tue Sep 04 12:15:15 EDT 2001 | JoAnn

The best place for SMT courses are those being presented at SMTA International. We offer everything from entry level to the most advanced technologies. All info can be found at http://www.smta.org/smtai. The industry's best source of technical inf

Nitrogen V.S Solder bridging problem

Electronics Forum | Thu Sep 06 11:17:13 EDT 2001 | Steve

I may be wrong, but I'm thinking that nitrogen has less effect on solder bridging as does the amount of solder that is present. Nitrogen allows better wetting becasue there are no oxidation effects. If you have solder bridging problems, look at the

Specification for Screw Torques

Electronics Forum | Tue Nov 06 19:41:42 EST 2001 | mparker

I say "wank 'em down 'till they break, then next time don't wank 'em so hard"! If all else fails, use lotsa Loktite or super glue!!! the preceding advice has been presented for amusement purposes only and is not the opinion of management.

Board Cleaning

Electronics Forum | Mon Dec 03 21:47:11 EST 2001 | davef

In a LARGE degree, the residues being cleaned dictate the selection of an effective saponifier. Your washer supplier may be a good source of suggestions. Many saponifiers present potential VOC issues, because of their use of alcohol. Try: Kyzen Aq

Profile

Electronics Forum | Mon Jan 14 16:25:35 EST 2002 | bentzen

Hi Yannick A lot of things can cause solder balls and spattering. Such as a to steep preheat profile and to much solder present. Check out more info on: http://www.smtinfocus.com/smt_failure_list.html

SMT Line Test

Electronics Forum | Wed Jan 16 13:09:41 EST 2002 | jhingtgen

Yannick, I have been involved in a stencil consortium that looked at stencil design, technology, and paste as variables. This material will be presented at APEX 2002 in San Diego next week. This work was done by Rochester Institute of Technology i


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