Electronics Forum | Sun Feb 24 15:24:48 EST 2008 | davef
With such a low standoff [eg, 1-2 thou of solder], we doubt that you can clean under QFN, either. For more, search the fine SMTnet Archives to find threads like http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=19247
Electronics Forum | Tue Mar 18 12:43:16 EDT 2008 | fsw
All, Thnx for all your inputs. We have decided to use Rapid Lock sockets & pins instead of soldering the wires.
Electronics Forum | Fri Feb 29 08:12:56 EST 2008 | davef
Solder paste suppliers often make recommendations on solder paste handling after removing it from the container [eg, jar, cartridge, etc]. For instance, Multicore Solder Paste Handling Guidelines, September 2004 says: As a general rule, paste that h
Electronics Forum | Fri Apr 11 03:28:11 EDT 2008 | joseph_gonzales16
Tak time is depend on the solder paste requirement all solder paste there are deferent tak time.
Electronics Forum | Thu Mar 20 08:45:02 EDT 2008 | davef
Common methods use to protect pads from solder splatter are: * No residue Kapton tape * Nonionic solder mask
Electronics Forum | Thu Mar 20 15:34:23 EDT 2008 | swag
Our customer is putting our process under a microscope and is requiring that we wash all product. They want no flux residues left on the solder joints. We do not want to add anything to our DI only wash system so we're trying to find a way around i
Electronics Forum | Fri Apr 11 14:05:28 EDT 2008 | devgru
We use our YESTech YTV-F1 for our 2D solder paste inspection and it works very good for us.
Electronics Forum | Tue Apr 08 15:27:33 EDT 2008 | arminski
hi experts, need more info on what's happening with the LPI Solder Mask on an FR4 PCB during reflow of both Leaded and Lead Free Process? Do they become soft as well while exposed to the extreme temperatures? regards,
Electronics Forum | Thu Apr 17 07:44:59 EDT 2008 | GSx
Check for lead finisching Lead Free finiscing like (e4), in case of AgPd plating you may have similar soldering problems Regards
Electronics Forum | Mon Apr 28 11:13:21 EDT 2008 | ck_the_flip
Here's a crude wettability test. Take a PCB - both types of finish - print them, and reflow with no components using your standard profile. Observe the wetting spread and flow of the solder paste. This rules in/out that it's PCB solderability.
