Electronics Forum | Sat Nov 18 21:20:58 EST 2006 | Fer
Dave, May I ask where did you find the 1.5%, or the goal of .005" (or .007") per inch? The IPC-A-600 bow and twist standard calls for a .75% based on the calculation of the test method TM-650, method 2.4.22, which calculates the percentage based on
Electronics Forum | Thu Dec 06 19:46:08 EST 2001 | davef
First, we�re assuming that we�re talking hot air solder leveled [HASL] bare boards, eh? Consider using A-600 - Acceptability of Printed Boards as the basis for discussing the bare board problems. It is the bare board analog of A-610 - Acceptability
Electronics Forum | Thu Mar 05 09:46:12 EST 2009 | davef
Solder mask requirements: * IPC-6012 and IPC-SM-840 contain detailed specifications and information regarding solder mask requirements. * IPC-A-600 defines acceptability of printed boards [analog of A-610 for board assemblies]. Why can't you use A-6
Electronics Forum | Wed Jul 05 20:50:42 EDT 2000 | Dave F
Hey KC roll-up IPC-A-600 and smack those bums on the nose with it and say "Bad fabricator don't do that on the floor again" in a firm voice.
Electronics Forum | Thu Jul 06 09:26:21 EDT 2000 | K. Chak
Hi Dave, Thanks for the reply. Which part/page of IPC-A-600 Rev F. does it call for? ..may be I am not looking in the right spot. Thanks again. Regards Kc.
Electronics Forum | Thu Jul 06 09:26:24 EDT 2000 | K. Chak
Hi Dave, Thanks for the reply. Which part/page of IPC-A-600 Rev F. does it call for? ..may be I am not looking in the right spot. Thanks again. Regards Kc.
Electronics Forum | Tue Jul 22 03:56:24 EDT 2003 | A.G.
Are there existing acceptability dedicated criteria for ALIVH bare boards? (Equivalent to IPC-A-600) In particular, how can we assess copper foil cracking after thermal stress?
Electronics Forum | Sat Nov 18 08:42:11 EST 2006 | davef
Bow & twist: IPC-A-600. Acceptability of Printed Boards 1.5%; Goal 0.005" per inch; Practicle 0.007" per inch
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 Aug 22 21:44:04 EDT 2007 | davef
Questions are: * Do these boards meet IPC-A-600? * What does your supplier say is the source of this color variation? * What steps is your supplier taking to make the boards more acceptable?
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