Electronics Forum | Thu Mar 10 15:10:07 EST 2005 | bandjwet
In reviewing the myriad of BGA reliability tech papers there seems to be little commonality in the type of test protocols. There are tests that are industry specific, device vendor specific and customer specific. What guidance in terms of minimum me
Electronics Forum | Wed Mar 16 17:43:33 EST 2005 | pmd
We grease acording to PM schedule. The cable is very old about 5 years. We run 2 shifts. The transducer program and burnin test show the varance that we are seeing phisically so I can rule out the transducer. The motor may be the cause as it is of 19
Electronics Forum | Fri Mar 11 09:28:34 EST 2005 | Micheal
I need help on a Quad IVC. We are having intermitant problems. What happens is it runs and then all of a sudden the Z goes down into the feeder past the limit. I have changed the Z motor, cleared the memory, and also swapped motion controller boards
Electronics Forum | Mon Mar 21 22:09:28 EST 2005 | dlkearns1
Did you get your answer? From all the reading I've done since your posting, does this issue happen when running a "specific" program or any/all programs ? Just a thought, as MOD codes can be tricky. Also check the thru-holes on that backplain conn th
Electronics Forum | Fri Mar 11 11:58:55 EST 2005 | pjc
About $60K for a good bench-top unit and $120K for a good in-line. AOI is justified if you are spending a lot of time ($$) visually inspecting your boards. AOI machine is faster and more reliable than a human for this task. Plus, visual inspectors d
Electronics Forum | Sat Mar 12 08:28:01 EST 2005 | Marcus
Fixing your problems needs to be based on hard data. But hard data is difficult to get from humans. They intend to see (and repair) what they e.g. understood best or what is easy to justify. This effect can be eliminated with an AOI. If programmed ri
Electronics Forum | Fri Mar 11 11:40:23 EST 2005 | JB
If there is an empty pocket at the pick up position, because a component "fell off" then the pick and place machine will attempt to pick up more components from the same feeder an "x" amount of times, depending on your component parameters, then it w
Electronics Forum | Fri Mar 18 14:27:29 EST 2005 | pmd
Hold on, MyData can place no component and not detect error if the minimum and maximinum settings in the centering phase are within the mesurement of the tool it'self. Especially if the levels are down between the jaws. For insurance make sure the to
Electronics Forum | Mon Apr 25 22:56:44 EDT 2005 | davef
rush316 First, no one stated that PBB and/or PCBE are in FR4. FR4 contain tetra-bromo-bisphenol A [TBBA]. Second, there are classes [and grades] of dielectric materials used in fabricating printed circuit boards. Grades, NEMA LI-1. From these gr
Electronics Forum | Tue Mar 15 19:17:26 EST 2005 | yoman
Thanks for your reply. We are using EKRA E4 Inline Automatic Stencil Printer. It is Capable of Automatic stencil inspection. 2D solder coverage inspection. Fix Squeegee angle at 45 degees angle. Programmable squeegee speeds and pressure, boards snap
