Electronics Forum | Wed Oct 08 01:43:24 EDT 2008 | pwilson1
Hi, Thanks for the replies! We currently use a mixture of DEK 265 LT`s and GSX`s. I ll be honest they are all around ten years old and i find them very reliable and easy to set up and maintain, with the only real issues we see now and again is w
Electronics Forum | Tue Oct 07 09:40:44 EDT 2008 | john_smith
Dear, Flexkhushi Do you mean 2 mm thick board or .2 mm board. If you are talking .2mm then you are refering to a flex circuit correct? What equipment will you be using to place the 01005 component? I
Electronics Forum | Thu Nov 20 08:41:12 EST 2008 | grics
Good morning SMTNET FORUM!!! Its been a while since I have been on. Good to see people are out there still helping other people. I have a question... What is everyone using for Coating Dry Film thickness verification? We are using micrometers. My
Electronics Forum | Wed Jan 07 02:08:56 EST 2009 | sachu_70
Hi! Just joined the circuit. Hot Bar soldering is very reliable provided the Flexible Printed Circuit (FPC) and Rigid PCB design support this technique. Some of the critical aspects that need to be considered include Stencil apperture design for sold
Electronics Forum | Fri Jan 30 04:10:10 EST 2009 | sachu_70
Hey Daniel, N2 gas provides an inert atmosphere which help to minimise oxidation, generally a concern across the reflow zone. Although N2 provides a more shiny solder joint, it is certainly more of a cosmetic issue and does not certify joint reliabil
Electronics Forum | Wed Feb 04 08:49:52 EST 2009 | milroy
Hi First of all you have to respect the dwell time and the time after the reflow at peak tmeperature.(225�C for Pb and 235�C for Pbf) You can find the reflow profile from manufacturer for majority of parts designed for reflow sodlering. In general t
Electronics Forum | Thu Apr 30 14:41:46 EDT 2009 | bandjwet
There was a paper recently presented by R Cirimele at the CALCE Reliability symposium in which extensive testing was done on a part (thermal stress, vibration, shock) after numerous reballing cycles. This show no failures on the reballed parts. In t
Electronics Forum | Thu Jun 04 17:32:20 EDT 2009 | bigdaddysoy9
If you are talking about assemblies, Class 1 is like cheap toys or something you wouldn't expect to last very long. Class 2 would be components for a television, air conditioner, automobile (except safety critical). Basically, things that you would b
Electronics Forum | Wed Aug 19 15:24:21 EDT 2009 | smt_guy
I have a customer who approved and asked us to process PCB's built with Lead-Free HASL Finish using Eutectic Solder. We did as directed and inspected the result from a 10-PCB Run and couldn't find any problem with solderability or issues. What Issue
Electronics Forum | Wed Aug 19 16:01:47 EDT 2009 | davef
You say, "using Eutectic Solder." * There are lots of eutectic solders. * When melted, a eutectic solder goes directly from a solid to liquid phase with no pasty phase. Do you mean 63/37 tin lead solder? If so, probably your assembly won't be RoHS
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