Electronics Forum | Tue May 08 11:23:11 EDT 2001 | rwilliams
I have been tasked with determining the Life of a Solder Stencil and how to track it. (Basically, how do we know when to replace the stencil, E.g., deterioration of print quality, physical damage, etc.) Obviously there are a lot of variables, but is
Electronics Forum | Fri Dec 03 16:00:48 EST 2010 | glenseely
When faced with high mass, high cost, sensitive PCBs and now with the added challenges of Pb-Free Vapor Phase is the only safe reflow method for component and joint integrity. A-Tek is the National Distributor for Asscon Vapor phase reflow. Asscon
Electronics Forum | Fri Nov 16 07:47:56 EST 2007 | realchunks
Stress cracks generally happen at wave solder, not reflow. But so you know, stress cracks from heat occur from the body and work towards the leads. They are generally circular. In the past, these cracks where blammed on the nozzle of the placement
Electronics Forum | Thu Jul 10 16:09:37 EDT 2008 | patrickbruneel
CK, I agree with you totally except for the �art� part. Soldering is a �science� of primary physics in nature. The European commission also looked at soldering as art (not science) and thought that RoHS would just change the materials the artist ha
Electronics Forum | Fri Feb 01 14:23:47 EST 2002 | delnosa
Looking for help on getting information on understanding the physics of micro-fracture growth rate within the BGA ball (or solder joints in general). Hoping to find a fairly straight forward study on the concept/theory of this topic. I'm not a meta
Electronics Forum | Thu Jun 07 15:48:39 EDT 2007 | ck_the_flip
Well put, MfgEng! Wave Solder did get lots of respect back in the day. It's a very scientifically-based process requiring knowledge of Thermodynamics, Physics, Chemistry, and Metallurgy, but at the same time, it's a very touchy-feely art form! At
Electronics Forum | Thu Jul 10 15:15:17 EDT 2008 | patrickbruneel
I have a tendency to agree with CK Experience and accomplishments in wave soldering are more valuable then the degree. Remember wave soldering is not taught in school although it is a vital process in the electronics assembly. The quality and relia
Electronics Forum | Mon Mar 25 15:32:34 EDT 2013 | jimmyboz
Are you concerned with physical vibration or electronic interference? If you can see your morning coffee have "rings", screen printers may suffer. Trains are a monsterous source of electrical "noise", just by thier engine (electric and diesel) not
Electronics Forum | Tue Mar 08 11:50:55 EST 2011 | pgoodyear
As a technician that does frequent board level repair / rework some issues have come to mind. I have been an electronics technician for almost 50 years. In that time I have seen the evolution of electronics from point to point wiring using vacuum
Electronics Forum | Wed May 12 12:01:11 EDT 2004 | solderpro
Now we are finally breaking the ice, glad to meet you greg, once again did not mean to offend any one and glad to have guys like you on the chemistry end of things... have no problem with the pp file, its mainly set up to help those with issues like
