Electronics Forum | Wed Jan 02 13:31:55 EST 2002 | PeteC
The rule-of-thumb is to follow the flux mfg.'s recommended profile to achieve their specified top side PCB temperature before making contact with the wave. Typical top side PCB temps are 100-120deg.C. Your wave contact time should be around 2 seconds
Electronics Forum | Tue Jan 16 09:23:26 EST 2001 | P.Gerits
Hello, Standard way to calculate stencil design can be done as follows: A normal ratio of aperture width/stencil thickness = 1.5 for pitches below 650u A normal ratio of stencil aperture width against pad width = 0.8-0.9 (or stencil aperture 10%-20
Electronics Forum | Mon Aug 09 02:40:25 EDT 2004 | abraham
We find that the component industry has migrated to lead free components whereas our process is still not leadfree. We receive components from suppliers of which some are lead free and others are not. We populate both types of components on the same
Electronics Forum | Tue May 02 12:07:26 EDT 2006 | Sheldon Stewart (Process Engineer)
I am curious if everyone else is seeing the same dramatically reduced tip life with lead-free that I am? We have purchased new irones with controlled temperatures up to 800F. We are doing more hand soldering on our lead-free at the present while wait
Electronics Forum | Mon Mar 07 22:40:36 EST 2011 | sarason
I have written an SMT file generator available at http://users.tpg.com.au/sarason/index.html try the YM6021 generator output option, it is very similar to a CSM66 file. The YMxx series file is a little different in format. This should help your file
Electronics Forum | Tue Mar 19 11:54:56 EDT 2024 | tommy_magyar
Hi there, I've been happy with the iiNeo and iiNeo+ from Europlacer, both have the capacity of 8*33 8mm feeders (264 slots in total). It can build boards up to 505*360 mm (our biggest PCBA, maybe it can do bigger one too). 6 and 12 monthly services
Electronics Forum | Fri Jan 15 09:36:20 EST 1999 | Earl Moon
| Folk's, | | I'm looking for information of how long you cna store a gold finish PCB before building it. I know there are problems with the gold disappearing into the underlying nickle over time / temperature etc but exactly how long do you have be
Electronics Forum | Fri Jan 15 11:28:50 EST 1999 | Bob Willis
| | Folk's, | | | | I'm looking for information of how long you cna store a gold finish PCB before building it. I know there are problems with the gold disappearing into the underlying nickle over time / temperature etc but exactly how long do you h
Electronics Forum | Fri Jan 15 14:45:48 EST 1999 | Earl Moon
| | | Folk's, | | | | | | I'm looking for information of how long you cna store a gold finish PCB before building it. I know there are problems with the gold disappearing into the underlying nickle over time / temperature etc but exactly how long do
Electronics Forum | Mon Jan 18 10:01:16 EST 1999 | John W
| | | | Folk's, | | | | | | | | I'm looking for information of how long you cna store a gold finish PCB before building it. I know there are problems with the gold disappearing into the underlying nickle over time / temperature etc but exactly how l
