Electronics Forum | Mon Jun 08 15:00:08 EDT 1998 | Earl Moon
| I work QA at an OEM in Alberta, Canada. I saw earlier posts on the smtnet regarding PCB haloing criteria. I am currently in a dispute with my PCB vendor over the acceptability of haloing (delamination) around plated through holes and vias on a lot
Electronics Forum | Wed Apr 08 18:15:18 EDT 1998 | Graham Naisbitt
Scott, I am not really in a position to answer this as fully as I would like because most military work with which I am familiar is subject to some degree of secrecy most especially on the internet. At least we have signed up to such restrictions. Ho
Electronics Forum | Tue Apr 14 15:42:45 EDT 1998 | Scott Cook
| Scott, | I am not really in a position to answer this as fully as I would like because most military work with which I am familiar is subject to some degree of secrecy most especially on the internet. At least we have signed up to such restrictions
Electronics Forum | Sat Dec 20 23:13:14 EST 2003 | Dean
Hi Tommy. A clean printer has always been a hot button with me as-well. Solder paste is like a can of paint. As soon as you open it up you will get it on all the things you wanted to preserve as clean. The cleanliness and condition of your sten
Electronics Forum | Wed Sep 01 09:29:03 EDT 2004 | patrickbruneel
Hi Ken, It looks like you have some solid practical experience in the transition from leaded to lead-free soldering. I hope you don�t mind me asking a question. With conventional soldering we have a library of workmanship standards available (SMT,
Electronics Forum | Mon Jan 08 20:57:52 EST 2001 | Dave F
Are you talking about bare board cleanliness or assembly level cleanliness? Bare board cleanliness is still primarily measured by resistivity of solvent extract (ROSE) using instruments such as Omegameters and Zero Ions. What is considered as "acce
Electronics Forum | Sat Feb 05 09:08:18 EST 2000 | Dave F
Casimir: Let me expand on something that I said in my response to your thread on ionic testing. Generally, no-clean people don�t use ROSE testing as part of their process control, because the ROSE test is essentially washing your board in DI/IPA �
Electronics Forum | Thu Oct 02 21:00:26 EDT 2003 | davef
Who says the chlorine comes from your tap water? Our PTOW dumps boat loads of chlorine into our water periodically. Sometimes it's so bad you can smell it. We doubt that it is the source of your problem. This chlorine will volitize very quickly,
Electronics Forum | Mon Jul 12 11:35:27 EDT 2004 | Pierre RICHARD
Here are some answers to my questions after a good research. I also added more definitions that could help understand this esoteric language used in assembly, specially surrounding fluxes and their use. In blue italics are comments and extracts from
Electronics Forum | Fri Aug 21 07:57:20 EDT 1998 | Earl Moon
| | | Will somebody please explain HASL (here). Thanks. | | Tryin: HASL: Hot Air Solder Leveled. A board fabrication process that applies an oxidation preventing solder coating to copper pads on the board. Dave F | You do this to keep the green s
