Electronics Forum | Thu Jun 27 08:51:30 EDT 2002 | AOIgenius
You also need to take into consideration the print angle. Contact your screen printer manufacturer for specs.
Electronics Forum | Tue Jun 25 08:29:45 EDT 2002 | davef
Ianchan: Watch yourself. Old style vapor phase oven are being replaced by ovens build to capitalize on new generation fluids [ie, Ausimont, F2, etc]. These machines could fill roles in soldering of no-leads.
Electronics Forum | Mon Jul 01 17:22:27 EDT 2002 | Daan Terstegge
Tg = glass transition temperature, the temperature at which the glass-epoxy starts losing it's properties as a solid material. daan
Electronics Forum | Tue Jun 25 12:08:14 EDT 2002 | kenbliss
I am curious what the identifications tags actually do. bar code, p/n etc. Are they for in process use or do they ship with the board. Why a tag rather than printing the info on the board.
Electronics Forum | Tue Jun 25 13:26:53 EDT 2002 | cnotebaert
Inernal use only, mainly for test fall out. We have a 3"x4" tag that gets attached. This tag identifies reason for fail and follows the brd until it is repaired, the tag is then removed and info is logged under the assy p/n & serial number.
Electronics Forum | Tue Jun 25 10:36:10 EDT 2002 | Vincent Balboni
Do you have a fixed number of components that you write off each time a feeder is loaded.
Electronics Forum | Fri Jun 28 11:25:01 EDT 2002 | dason_c
You need to check your pot temperature and the board surface temperature. You know the melting point of the 63/37 at 183C. If your top side surface temperature is above this point and second reflow may happen. Also, the board will warp and may cau
Electronics Forum | Mon Jul 15 00:31:34 EDT 2002 | ppcbs
If your just getting into BGA assembly or rework, I strongly suggest taking this class. It covers profiling and considerationds for heat sensitive BGA'sin depth. http://www.pcb-repair.com/bgarework.htm
Electronics Forum | Wed Jun 26 12:24:38 EDT 2002 | dason_c
You can reference to J-STD-006 for your minimum requirement. There have a higher purity of the alloy and excess the standard but the price is higher.
Electronics Forum | Fri Jun 28 22:16:39 EDT 2002 | yngwie
The supplier said : no impact on the quality/elec. characteristic- this comes with a huge cost saving. As an Engineer, I would not take things for granted, I will have to verify the statement.In other words, I don't trust salesman. rgds,yngwie
