Electronics Forum | Mon Aug 06 11:58:48 EDT 2007 | gmoritz
Do you have BEC (Board Error Correction) > on that machine, and if so, did they > give you the alignment plate for it? I don't know if we have BEC on the machine. I can't even search the 550 page manual that was finally sent to us in a pdf file
Electronics Forum | Mon Aug 06 14:05:02 EDT 2007 | slthomas
BEC hardware would be on the machine as a sensor underneath the placement table, to the left of the C&C, and an emitter attached to a bracket to the left of the insert head. The two line up with each other and the sensor uses a quadrant layout to det
Electronics Forum | Tue Jul 24 07:15:16 EDT 2007 | james
We are currently have failures on one of our QFN components. We are running this product with lead free paste, lead free boards and lead free parts. They have done a pull test on this component and it showed that the solder joint mainly dissconnect
Electronics Forum | Fri Jul 27 08:49:35 EDT 2007 | cman
We are currently have failures on one of our QFN > components. We are running this product with > lead free paste, lead free boards and lead free > parts. They have done a pull test on this > component and it showed that the solder joint > mai
Electronics Forum | Tue Jul 24 10:23:36 EDT 2007 | ck_the_flip
Michelle, Traditionally, the adhesive side is always run first since most designers put passives (resistors, caps) on the adhesive (solder side) of the board. I worked in an environment where we did the adhesive side first, sometimes the boards "sa
Electronics Forum | Thu Aug 02 11:46:22 EDT 2007 | realchunks
Congrats Shrek - sounds like you found your heaven, blaming others. About "IT". Wow, what kind of hype was that? I thought this would be something worth reading. Looks like a first year Project Manager thought of this. I agree, who ever thought
Electronics Forum | Mon Aug 06 15:44:37 EDT 2007 | Hussman
Lead-free is just another political stunt so the politicians can reap benefits from our following. Putting your name on a White Paper means nothing about their reputations - they just want to be closer to the sheepherder. They are hoping we will al
Electronics Forum | Thu Jul 26 13:08:59 EDT 2007 | Mike Konrad
The best method of cleaning misprinted boards is with a stencil cleaner. I would not recommend the use of a spray-in-air system for misprints. Spray systems can cause solder paste to become embedded into vias and under components (if double sided).
Electronics Forum | Tue Jul 31 17:11:28 EDT 2007 | rpadilla
Is the via hole not supposed to be there, or is this by design? If you are trying to fill the via hole with solder and not have voiding issues, I suggest using a type 4 solder powder mesh size. Reason being, anytime you go beyond Type 4 mesh, to so
Electronics Forum | Sat Jul 28 08:37:52 EDT 2007 | davef
There is no good choice. Board Finishes: Industrial/Battelle Class 3 Environment [Reliability Knowledge Gaps: For use of Pb-free solders in High Reliability Applications, J Smetana, iNEMI Availability of SnPb-Compatible BGAs Workshop, March 1, 2007,
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