Electronics Forum | Tue Nov 25 12:38:42 EST 2008 | kennyg
Assemblies are stored on ESD rubber covered flat trays. The trays are stored on rolling carts with slots for the trays (Bliss cart). The damage usually occurs on the bottomside (passives only). This side is more susceptible to damage because the sm
Electronics Forum | Tue Dec 09 09:56:48 EST 2008 | scottd3
We have used camera's before, mounted in suspect areas of damage, and recorded a shifts worth of work. When we found a damaged part, we found out what time the damage was found, then looked around that time frame on the camera. It can be complicate
Electronics Forum | Sat Nov 22 09:58:29 EST 2008 | realchunks
The only easy solution is not to handle the boards. Purchase true double sided reflow lines. Buy automated magazine loading conveyors. Check machine board supposrts. Are you sure it's from handling? We found it was 50/50 between board handling
Electronics Forum | Fri Nov 03 11:27:49 EST 2006 | kennyg
Does anyone know of a source for salvaging column grid arrays with damaged columns (through bad handling or removed from a PCBA)? Not reballing, but recoluming.
Electronics Forum | Wed Dec 06 09:09:54 EST 2017 | davef
Suppliers have improved the utility and quality of OSP [organic solderability preservative] solderable surface protection over the years. Be cautious reading too much into older SMTnet [and web in general] conversations about handling OSP. When prop
Electronics Forum | Fri Feb 20 12:12:57 EST 2009 | kennyg
If gloves are used to handle a PCBA, wouldn't the glove material need to be conductive or dissapative rather than simply "anti static"? Gloves labeled as static free nitrile, latex or vinyl shouldn't be used to handle a PCBA?
Electronics Forum | Thu Mar 25 12:24:12 EDT 2010 | ssager
When testing components on a PCBA, try to validate coverage for presence, correct, orientation, live, and alignment. AOI is not really great at catching cold solder joints and damaged components, and from my experience an X-Ray is only as good as the
Electronics Forum | Tue Oct 16 11:02:05 EDT 2012 | terry_zhang
Has anyone tried to immerge the PCBA(with ICs, resistors, capacitors,connectors populated) into IPA for 1hr? The temperature of IPA is about 60~70C, is there any damage or degrating found for PCB and the components? Is there any related information s
Electronics Forum | Thu Sep 15 08:33:14 EDT 2005 | pjc
Is not a problem, I've done it. Be sure the insertion tooling and cut&clinch tooling are set to proper distances from the board. If proper, no deflection of PCBA should be observered during AI. Obviously, your AI Operator must be more careful with PC
Electronics Forum | Wed Dec 08 20:00:56 EST 2021 | scotceltic
Throughout the years in SMT PCBA production I have seen OEM's and contract houses move away from a Double-Sided PCBA Line setup. Ex Single pass for bottom-side and then straight into duplicate equipment for top-side. The norm these days seems to be
