Electronics Forum | Wed Oct 08 12:57:47 EDT 2003 | davef
For rigid boards, look here: http://www.standardpc.com/ipc4101.htm Google ...ipc 4101... to fill-up your table.
Electronics Forum | Wed Oct 15 08:16:56 EDT 2003 | MA/NY DDave
Hi http://webvision.ipc.org/scripts/mgrqispi.dll?APPNAME=IPCWEB&PRGNAME=TOCFRAME&ARGUMENTS=-N,-N,-A,-A,-N50 And then look at 4202 and some of the others. YiEngr, MA/NY DDave
Electronics Forum | Mon Dec 26 12:21:15 EST 2005 | davef
Sure, you can use X7R dielectric ceramic capacitors on mixed technology boards. You need to be aware of the limitations and design and control your process appropriately. Continuing: * BIG cracks show as hard failures * Small cracks show as a leakag
Electronics Forum | Wed Jun 21 08:31:36 EDT 2006 | don dawson
Depending on the material, the etching can damage the dielectric. This can be manufactured but is difficult and expensive. Copper plating and other processes that require agitation are almost impossible.
Electronics Forum | Thu Sep 10 11:47:44 EDT 2009 | mikesewell
The adhesive should be a dielectric (insulator) by design, if not it could possibly short across leads of the very parts it's intended to secure. It normally isn't a concern - what is the surface resistance of your soldermask, bodies of ICs, ...etc.
Electronics Forum | Fri Jul 09 19:09:52 EDT 2010 | rway
A couple of things: Does the cap break if you try to remove it with hot air? If not, than you are breaking the caps do to mechanical stress. We have had similar issues. I don't think your board is suffering from mechanical stress from depaneling o
Electronics Forum | Tue Nov 01 10:34:16 EDT 2011 | austinpeterman
We have tried using pookie to form an air tight seal on top of the connectors without success. We have tried filling the connector with dielectric grease with some success. Havent found any info on 1-2577 in gel form. Has anyone found this product
Electronics Forum | Tue Jun 05 06:37:48 EDT 2012 | mosborne1
Definition: Pink Ring - A condition that can exist in multilayer printed circuit or wiring boards, in which the oxide around a through-hole inner layer interface is chemically removed, and there is a lack of adhesion of the inner layer to the dielec
Electronics Forum | Mon Oct 05 10:25:43 EDT 2015 | emeto
I know DEK is selling some dielectric cleaning liquid that is 20 times more expensive than alcohol. You should put this liquid on your stencil cleaner.
Electronics Forum | Thu Jul 14 08:26:15 EDT 2016 | emeto
Here is some more information: "Moisture can increase the dielectric constant, leading to changes in impedance, switching speeds and propagation delay times. " I am not sure if you can accurately measure any of these on your assembly but it looks li
