Electronics Forum | Tue Jun 05 21:14:10 EDT 2001 | davef
You aren't going to post our stuff on your "Hey, I'm the wizard site", are you? Board fab, Pad coatings, OSP 1 OSPs: Imidazole (Via Systems) is good. Entek (Enthone) works, but requires strict thickness control in fab. 2 Enthone CU56 allows one t
Electronics Forum | Mon Sep 06 10:21:10 EDT 2004 | pioneertechnology
Hi All We have been manufacturing lead free in the UK for about two years now in a fashion. Let me expalin. Two years ago we began to change over our wave solder machines to lead free process. We read all the articles and attended the seminars on
Electronics Forum | Tue Sep 07 17:12:34 EDT 2004 | davef
No one knows what type of board you use. So, assuming you're talking a fairly standard FR4. Q1a. actually, what is max temperature and duration can a bare PCB reflow without any quality problem? A1a. We'd guess your board could take 250*C for may
Electronics Forum | Fri Jan 21 14:51:08 EST 2000 | Dave F
Mike: I�d hate to see you making design decisions, based solely on the discussion here, but that this would be an impetus to consult IPC-D-279, "Design Guidelines ... " and take a course on designing reliable boards. Werner Engelmaier (Engelmaier
Electronics Forum | Mon Jul 05 18:40:24 EDT 1999 | JohnW
| Dear All, | | We are a medium sized Electronic manufacturing company manufacturing computer motherboards and Telecommunication products. We have a big debate going on within our company regarding the defect rate measurement technique. | | At p
Electronics Forum | Sat Jul 03 13:49:36 EDT 1999 | JohnW
50% reduction in time. One draw back, the availability of feeders... You need 280 feeders max to change over a max capacity of 140 feeder machine (or a variance of a product mix vs. part numbers); then there's 8mm, 12mm, 16mm, sticks feeders that c
Electronics Forum | Wed Dec 09 21:45:11 EST 1998 | Dave F
Graham: I agree. Very thorny. What is clean?? And how is that controlled?? Back 25 or so years ago, soldering was done with high solids rosin fluxes. The issue with cleanliness was ionic contamination. The US military and others set a fairly a
Electronics Forum | Mon Sep 21 21:21:32 EDT 1998 | Steve Gregory
| am working on the design of a showboard to demonstrate our | assembly capabilities. we are working with double sided assemblies involving BGAs and CSPs. could someone suggest | types of BGAs/ CSPs (type, name, I/O, etc)that would be a challenge t
Electronics Forum | Wed Oct 24 18:08:02 EDT 2001 | davef
1- DF1: WOW!!! How do people get these cool toys? CB: I am with the University at Buffalo Electronic Packaging Lab. http://www.packaging.buffalo.edu We have pretty much everything that is sold on the market as well as Laser inspection technologies we
Electronics Forum | Sat Oct 02 03:27:52 EDT 1999 | Brian
| I am currently in the middle of a company wide war and I'm looking for data (AMMO). Here are the problems: | | 1) I am looking for anyone who has done or seen any reports on Thermal Shock to smt parts and/or via holes caused by Soldering Irons at
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