Electronics Forum | Mon Jan 08 13:27:15 EST 2007 | pgarsoe
Is having a specific COB forum a virtue or necessity? Is carving up this forum into various segments going to delute it in any way? We could start any forum segment that the community desires if interest is shown and would not delute this production
Electronics Forum | Tue Jan 30 08:21:02 EST 2007 | GS
Please who can help me? I am looking for fiducial (cross shape) mark (target mark? Swiss mark?..)specifications used when COB wire bonding on PCB laminate. Pad pitch should be 250umm may be 220umm?). Mainly need to know which are the tolerances
Electronics Forum | Thu Oct 04 15:50:32 EDT 2007 | naynayno
Being that is budgeting season I am interested in specifying more depaneling equipment but with an eye towards quality / realiability. We use routing for COB assemblies but have spec'd the Cab 4M for everything else. However, I came across a Frost
Electronics Forum | Wed Feb 10 16:51:01 EST 2010 | flipit
Anyone using ENEPIG electroless nickel electroless palladium immersion gold? Am currently using selectively plated gold 25 micro inches in combo SMT/COB gold ball bonded product. Gold cost has increased over the years. Palladium cost is much lower
Electronics Forum | Fri Oct 14 12:03:32 EDT 2011 | fborja3
I want to start an assembly that may require use of SMT machines such as SMT assembly, bond wire, Xray and PCB fabricator machines. I apologize I am not to savvy with the technical names such as the above but I just want something not to costly or e
Electronics Forum | Thu Nov 29 11:06:47 EST 2012 | davef
Approaches to getting started are: * Most batch cleaning equipment suppliers provide both open and closed loop options on their machines. Talk to them about upgrading your machine. * There are companies that specialize in supplying closed loop system
Electronics Forum | Tue Dec 08 17:55:51 EST 1998 | Dave F
1. What is the best way to remove polyurethane conformal coating from selected areas? Your conformal coat material supplier is best equipped to tell you how to remove the coating. Polyurethane conformal coating is not easy to remove. Without in-pu
Electronics Forum | Tue Nov 05 06:51:59 EST 2002 | V.RAMANAND KINI
Hi, This is a widely discussed subject and since you have asked a brief explanation, I assume, you are a business man or a top executive in the company venturing in to COB. I waited to see if someone replies to you. May be it is a very old subject
Electronics Forum | Thu Oct 26 17:48:47 EDT 2000 | Dave F
In response to your questions: 1) Suggestions on substrate material FR-4 or something better? Most PBGA are on BT. That might good for you, also. 2) Are there design guidelines for wire bonding pattern on the substrate? Several things: 1 Doesn�t
Electronics Forum | Mon Jun 19 21:32:15 EDT 2000 | Dave F
Frank: Good luck on finding a specification. The right combination of material properties will greatly improve the lifetime of your flip chip component. Your flip chip supplier might be best starting place to determine underfill properties that ma
