Electronics Forum | Fri Jun 02 03:41:04 EDT 2006 | geb
Found the aramid fabric (Kevlar) on the website you suggested. Which thickness Aramid-and-Fiberglass Sheeting should I get, do I need to buy a strip as well to protect up to 600F? I was going to use PTFE-Coated Fiberglass Thread as it is rated up to
Electronics Forum | Tue Apr 22 13:32:23 EDT 2003 | swagner
Does anyone have any data pertaining to contaminates baking out of a fiberglass resin pallets used for processing flex circuits? If so does this phenomena increase over time? Thanks,
Electronics Forum | Mon Sep 11 19:17:07 EDT 2006 | russ
if you did not take PCB temp over about 245 C you got no probs buddy. just non compliance most likely. Fiberglass and copper, not much can happen there Russ
Electronics Forum | Mon Jul 05 22:21:33 EDT 2010 | isd_jwendell
I have found that lighting for the cam is very important for fiducial recognition. My machine illuminates with a light ring, which isn't so good. However, if I burnish the fiducial with a small fiberglass brush then it works every time.
Electronics Forum | Fri Jan 02 17:47:21 EST 2004 | gpaelmo
Yes, We have done away with masking with kapton 8 yrs ago. As long as the goldfingers are leading edge you can use one of these: 1. rubber goldfinger boot/glove - contact east use to carry them...don't know if they still do. 2. fiberglass glove - ma
Electronics Forum | Wed Mar 25 13:29:08 EST 1998 | Gary Simbulan
We currently use an abrasive fiberglass brush to clean the silver oxide off of our substrates proir to asembly. It's messy and tiring. Is there an alternative method, either chemical or mechanical that is cost effective for small (30 to 50ea 6in sq
Electronics Forum | Sun Jan 06 22:14:57 EST 2008 | mac88
If the machine or machines couldn't recognize the fiducials, you can grind it with a fiberglass eraser. If the fiducial are missing you can use tooling holes, and/or via holes. You can verify the hole size and tolerance on the PCB assembly drawing.
Electronics Forum | Wed Jun 13 01:01:10 EDT 2012 | isd_jwendell
I clean all fids with a fiberglass brush pencil so that I know there will be no rejects (it doesn't take too long). The problem is the machine lighting. My Essemtec machine uses a light ring (red LEDs) around the cam. Here's one of many documents th
Electronics Forum | Tue Dec 02 06:07:00 EST 2014 | sarason
A trick I used to use doing RF design was to have on the edge of a panel, a stripline that I could hook up to a Network Analyser to check board impedance. You could do this to verify if the fault is in the no wash process or a board manufacture proce
Electronics Forum | Tue Oct 03 17:08:31 EDT 2023 | assuredtech
What Is FR4 Substrate Material? FR4, also written as FR-4, is both a name and a standard rating. The name is applied to the fiberglass-reinforced epoxy-laminated sheets used in printed circuit board manufacturing. However, the name also functions as
