Electronics Forum | Tue Nov 13 09:25:42 EST 2001 | davef
Maybe. While it doesn't help with your current problem, there is nothing that says that you cannot impose requirements in your purchase order that are stricter than D-300.
Electronics Forum | Mon Jan 12 18:06:38 EST 2004 | Kris
Hi, Is there any standard for voids in a leaded device or a chip component ? IPC 7095 lists maximum allowable voiding for BGA devices but has no information on leaded devices Appreciate your help- thanks
Electronics Forum | Mon Jun 12 14:33:40 EDT 2006 | pjc
IPC spec is V-score shall not be more than 1/2 board thickness. They should be V scoring 1/4 off top and 1/4 off bottom equally.
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 | Thu Jan 18 07:22:10 EST 2024 | klauss
Is there any stardarts to help us what tolerance values (max or min. height, weight, volume etc) should we use while programming AOI and SPI.
Electronics Forum | Fri Apr 20 05:32:39 EDT 2001 | dougie
Hi, I've just splashed out �60 on IPC-A-600F trying to find out the formula for measuring the bow and twist of raw PCB's. Much to my dismay there are 10 lines on the subject in the whole standard. Worse still is that it tells me nothing I don't alre
Electronics Forum | Mon Nov 12 13:04:35 EST 2001 | slthomas
We've got a problem with a fine pitch board that has about .005" registration error at each end (towards the center of the board) when it's printed. Apparently we've got a case of board stretch generated at the fab shop. I still have to do some mea
Electronics Forum | Tue May 23 12:18:25 EDT 2000 | mike weekes
Which companies would you consider for protective coatings, (conformal coating) and other levels of protection? I am taking a fresh look at alternatives. Know any good tests for testing compatability of coating with flux - aqueous or no clean? SMT
Electronics Forum | Fri Apr 20 07:12:22 EDT 2001 | wbu
Dougie, oh yes, it�s a bit short that chapter. I have the Revision e in front of me and this one contains in the appendix the needed IPC-TM-650 Test method for bow and twist. Can�t think that they don�t have that in the new revision. Hope you find
Electronics Forum | Mon Apr 23 11:44:55 EDT 2001 | CAL
650 Standards are also located in the back of IPC JSTD-001. I am currently looking at 4 pages on bow and twist. Percent bow = R1-R2/L x 100 (R1= Highest point; R2=lowest or resting point; l= length) Percent twist=(R1-R2)/(2xL)x 100 Sorry if this is
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