Electronics Forum | Sun Mar 21 08:09:40 EDT 2010 | itzikbs
During PCB bare board inspection we found some deformation on the PCB surface. I appriciate any comment, whom can explain if the boards are problematic or not and whay may casue this phenomena
Electronics Forum | Thu Apr 01 23:53:26 EDT 2010 | dekhead
Sounds like SPC data collection is turned on with post print alignment inspection. Needs to be changed to "NONE" http://www.dekhead.com
Electronics Forum | Wed Apr 14 14:48:48 EDT 2010 | davef
It won't work. An acoustic signal can't punch through a BGA. The signals reflect at every interface. So, it works for flip chip, but there are too many interfaces in CSP and BGA. Equipment, Inspection, Acoustic microscope * MicroPhotonics * Sonos
Electronics Forum | Fri May 07 17:12:53 EDT 2010 | hegemon
Is this gap by any chance under a device, like a BGA or LGA? There are several scopes for that type of inspection, if that is what you are describing.
Electronics Forum | Fri Jun 25 15:39:57 EDT 2010 | tate350
I'd wash them first then AOI. Especially you use the same AOI for WS and no-clean. You certainly will not want any WS flux left inside teh AOI then use the AOI for a NC PCB...
Electronics Forum | Tue Jun 29 11:46:36 EDT 2010 | davef
Prins: Everyone has equations. Here's one some people use: False call rate = [Number of defective boards, but good at inspection]/[Total number of boards produced] Why don't you ask the people [that calculated the numbers that confuse you] how the
Electronics Forum | Wed Jul 14 16:03:25 EDT 2010 | malcolmlanders
I seemed to have learned that on the bga chip that the soider is the soider balls on the chip. If this is true how do you get the chip to not move on the board when being inspected bdfore you soider it. and even in the transport of the board to the o
Electronics Forum | Wed Jul 14 19:23:21 EDT 2010 | davef
So, tell us more ... * Is this at in-bound inspection? Where do you observe this? * Does this affect the whole component, just terminations, ... * Could the 'brownish' be interpreted to be 'purplish'? * How wide-spread is this [eg, multiple products
Electronics Forum | Fri Aug 20 10:11:19 EDT 2010 | namruht
I just found out that we have an older Omron VT-WIN that we are not using. I do not know anything about the machine, but I am curious if it is worth trying to bring onto the production floor and use it for inspection. Can anyone tell me anything abou
Electronics Forum | Wed Sep 01 07:44:36 EDT 2010 | sachu_70
Dear SMT-manufacturer, I would recommend to also have other device joints on board X-ray inspected to understand if void formations are seen across the board or confined only to one component. If seen across, your "Reflow Profile" could be the cause
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