Electronics Forum | Tue Mar 19 07:48:26 EST 2002 | PeteC
Have QFP at o.5mm pitch with leads too oxidized for the flux in the paste to de-oxidize(in stock for boo koo time). I saw three companies on the Internet that can "tin" (solder coat) the leads. Does anybody have any experience with having this done t
Electronics Forum | Fri Apr 12 13:22:49 EDT 2002 | mikecollier
I am currently exploring the option of screenprinting chipbonder for backside devices, mostly passives, 0603 and up. Does anyone have any experience with this? What are the pros/cons? What are the stencil design considerations? What about blades,
Electronics Forum | Mon May 27 12:55:28 EDT 2002 | jgeissler
We are experiencing an increased amount of machine stoppage due to brittle 8mm cover tape. The issue does not appear to be feeder or part/manufacturer specific. Taking a foot of cover tape and pulling it from the ends results the cover tape snappin
Electronics Forum | Tue Jul 23 12:54:07 EDT 2002 | krs
Dave Thanks, some very interesting articles on that link, it really is rocket science! However this article is a bit of a tease, it tells you how they compared different package types, CBGAs and PBGAs and a fine pitch QFP but does not detail the
Electronics Forum | Tue Sep 17 15:03:33 EDT 2002 | ccross
I am working with fine pitch components (15-20 mil) and having soldering problems and would appreciate some opinions. 1) How much of an effect does pad size have on bridging? 2) How much of an effect does solder paste grain size have? What is the re
Electronics Forum | Wed Oct 30 17:18:01 EST 2002 | Frank
What does it mean to 'register' a machine? Pay the fee and get service? Sounds like extortion... Does this happen in other industries as well? You can easily pay $60K-$100K (the price some new low end machines) for some exotic cars and you don't
Electronics Forum | Mon Nov 25 18:16:40 EST 2002 | Dreamsniper
What really happens during the oxidisation process during reflow soldering? Where does the oxide goes...mix with flux etc...Is there a tin-oxide and lead oxide during the process? I believe that during wave soldering the oxides become dross...but wha
Electronics Forum | Mon Dec 23 13:44:46 EST 2002 | Paul Black
Does anyone have a tried-and-true method to account for machine losses of SMT parts? I remember reading an article once that stated that 5% - 10% of components of certain sizes are known to be lost during placement, and I know some CM's overplan by 5
Electronics Forum | Wed Jan 08 03:42:04 EST 2003 | smdtech
Hi All, I'm going to bye ESSEMTEC Pick and Place machine model: clm9000.Can anyone give me som einfo about the machine, the equipment for it,does it work well,does the feeders work well,about accuracy,reliabillity or whatever I should know. If some
Electronics Forum | Mon Mar 24 23:56:26 EST 2003 | Dreamsniper
Can anyone who has DEK Horizon's 2D Advance Package System explain how does this below feature works? "Automatically triggered recovery sequences" Does it mean that operator need not be there to press any button to clean and recover a print if the
