Electronics Forum | Wed Mar 30 10:08:15 EST 2005 | steve
Granite is a porous material and if anyone decided to clean this material you probably have an insulative barrier thus you would never have static dissipation. Spend $45.00 and put a mat over the granite or spend $80.00 and get an esd laminate materi
Electronics Forum | Wed Aug 21 10:26:08 EDT 2002 | stownsend
We are using OSP coated boards and no-clean solder paste. In a few instances, we are seeing increased distortion in an audio circuit. Has anybody seen or heard of surface insulation resistance (SIR) decreasing after reflow on OSP boards? Is it possib
Electronics Forum | Wed Oct 11 12:37:56 EDT 2006 | realchunks
Rob is right. ESD flooring is "Conductive" which means it can drain ESD from the body. But if you have an insulated shoe, it does not good, the ESD remains on the body. Now if you wear a smock, then you can rub ballons in your hair and touch any
Electronics Forum | Wed Aug 21 17:44:32 EDT 2002 | davef
Splitting hairs, I expect SIR of all solderability protection, including OSP, to decrease after reflow. What�s more, I expect the SIR of all solderability protection to pretty much decrease over time. The �comb pattern� test specimens meet requirem
Electronics Forum | Fri Mar 11 18:47:54 EST 2005 | davef
JD: It's important to note that FR-4 does not contain PBB or PBDE. The bromine in FR-4 epoxy comes in the form of tetra-bromo-bisphenol A [TBBA], which polymerizes and become part of the cross-linked epoxy. Bromine, in the form of hydrogen bromide, i
Electronics Forum | Thu Dec 28 14:50:56 EST 2017 | stephendo
Leather is not very insulative. AFAIK a lot of good quality dress shoes are naturally ESD safe. (or maybe test too low.) Check the dress shoes with a tester. And I'm guessing that stapling the straps is out of the question.
Electronics Forum | Fri Oct 22 11:53:53 EDT 2004 | C Lampron
Hi Christina, What would you be basing the yields off of? Is it solder defect, component placement, etc....? I have worked for a flex house for quite a few years. You are right. The Polyimide is very dimentionally unstable. (even more so on humid da
Electronics Forum | Thu Aug 13 07:53:40 EDT 1998 | Earl Moon
| | Couple of questions. | | 1) Are we talking alumina substrates as the ceramic material? | | 2) Are we co-firing gold as the conductors on the substrate surface? | | 3) In other words, is this a hybrid thick film circuit? | | 4) If so, how large or
Electronics Forum | Thu Mar 10 14:31:57 EST 2005 | russ
Patrick told you why, But here is some more info for ya, I would absolutely not recommend that wires be tinned with OA. The residue will never get cleaned underneath the insulation and all of your strands will strt to break in the near/far future.
Electronics Forum | Mon Nov 09 09:44:22 EST 2015 | davef
Purpose. This describes setting-up a wave soldering system set-up for a new assembly design or checking a wave solder machine operation with a test board. Applicability. To be used for new design printed circuit assembles and during machine accept
