Electronics Forum | Thu Apr 18 11:44:34 EDT 2002 | jsmith01
Does anyone know of a PCB material that is better at preventing arcing than fr4 or g10?
Electronics Forum | Thu Apr 18 16:55:39 EDT 2002 | davef
Yes. Ceramic is much better. We use FR4 in fairly high voltage circuits. What are the particulars? * Where are you arcing * How many layers, prepreg, etc
Electronics Forum | Mon Aug 26 17:27:28 EDT 2002 | dragonslayr
first time I've heard of the Cheese Its defense to excuse any momentary lapse of reason. I think I'ma gonna order me a case of them nibbles right away. A guy can't be too careful now adays.
Electronics Forum | Fri Sep 06 13:45:02 EDT 2002 | Cris Campos
To Scrap or not to Scrap? We have the answer to your problem. Visit http://www.circuit-techs.com for more information regarding Printed Circuit Board Repair, Rework & Modification in accordance to IPC 7711 & 7721.
Electronics Forum | Tue Sep 10 08:22:36 EDT 2002 | davef
I doubt that the interposer is FR4, it's more likely to be BT. Warp during reflow is a function of material a reflow recipe. Your ramp is too fast and is causing the interposer to bend like a potato chip.
Electronics Forum | Wed May 28 12:31:18 EDT 2003 | larryk
This is our first experience with running embedded flexs. Our board supplier suggested that we prebake our assemblies before placing components. What does everyone else do? Is prebaking normal when a flex is embedded?
Electronics Forum | Thu May 29 10:05:10 EDT 2003 | swagner
I hate to answer a question with a question but what are the particular effects of moisture absorption in a flex circuit?
Electronics Forum | Fri Jun 25 07:13:40 EDT 2004 | davef
Nelco was developed by Park [ http://www.parknelco.com/parknelco/highspeed.htm ] Without fairly involved testing, you may be forced to rely on a c of c from your fabricator. Although, Park may be able to give you a lead.
Electronics Forum | Tue Feb 01 10:39:01 EST 2005 | Frank R.
Thanks Jay, Concerning your FR4 material, do you keep the same TG than what you use with Sn/Pb? Response from everybody would be also appreciate. Thanks and regards, Frank R.
Electronics Forum | Tue May 24 03:53:52 EDT 2005 | Rob
Hi Doug, Can they be mounted on standard FR4 PCBs & reflowed at Lead Free temperatures? Cheers, Rob.
