Electronics Forum | Tue Jun 13 08:33:11 EDT 2006 | davef
IPC-2222, 5.3.1 defines the parameters of making scoring cuts and the tolerance of the cuts, but does not specify the cuts. Our spec for 0.062" thick FR-4 boards is: 0.018-0.024"
Electronics Forum | Tue Jan 23 17:48:17 EST 2007 | GS
for SMDs, try to look for EIA-481.1.2.3, or may be the new version EIA-200 if I am not wrong. Also IEC 60286-2 (leaded components like axials, radials,..) Regards......GS
Electronics Forum | Thu Jan 25 04:47:19 EST 2007 | GS
see also the complete specific series of IEC-60286,IEC-60286-3, IEC-60286-4, IEC-60286-5,IEC-60286-6. All of those specs are realated to packaging specifications. Tape, reel,stick magazine,tray, bulk case,etc. Regards.....GS
Electronics Forum | Wed Jan 31 17:37:23 EST 2007 | GS
Hi, as for IPC-7095, in case of BGA, other important value to inspect/measure (3D) is the volume of paste deposit, mainly when mounting Ceramic BGAs. Regards...GS
Electronics Forum | Fri Feb 02 08:22:10 EST 2007 | davef
Try: * IPC-2221, 5.4.3 Datum Features * http://www-ese.fnal.gov/ese-dfe/SMEMA%20fiducial%20mark%20standard.pdf
Electronics Forum | Fri Jul 06 10:18:02 EDT 2007 | blnorman
According to IPC-A-600, measling can occur in epoxy-glass boards when the moisture content of the board is above 0.3wgt%. Is this the industy acceptance standard for max moisture content of a board?
Electronics Forum | Wed Sep 03 16:15:30 EDT 2008 | blnorman
Elemental is by SEM/EDX. The brown coloration does resemble the 3 micron photo. Again, if I'm picking up copper (our Ag plating thickness requirements are 0.05 micron to 0.12 micron following IPC 4553), maybe we do have a porous silver plating.
Electronics Forum | Tue Sep 02 22:21:26 EDT 2008 | davef
IPC-6012 Table 3-2. States "Fused tin-lead or solder coat - Coverage and Solderable". The lack of any specific dimension criteria doesn't make this any less a requirement. There must be complete coverage of solder on the land, and it must be wettable
Electronics Forum | Thu Nov 20 04:00:36 EST 2008 | caerleon
Our sub-contractors will be using SMD600. Thankyou all for your replies much appriciated.
Electronics Forum | Thu Jan 22 05:29:25 EST 2009 | johanhuizing
I think IPC-4552 is define the thickness of Nickel as: 3 to 6�m and Gold as: 0,05�m minimum
IPC is the trade association for the printed wiring board and electronics assembly industries.
Training Provider / Events Organizer / Association / Non-Profit
3000 Lakeside Drive, 309 S
Bannockburn, IL USA
Phone: 847-615-7100
