Electronics Forum | Tue May 10 15:44:24 EDT 2011 | davef
From your graph, we just don't see the the relationship between failures and relative humidity. Questions are: * What is the correlation between failures and RH? [We'd bet that the correlation between failures/RH and failures/temperature are 'similar
Electronics Forum | Wed Jun 08 01:45:53 EDT 2011 | aoiguy
Update: I was able to import the csv pick & place data that was given, issue is that the data fails to over write the insert cords that have already been given with the cad data. Can not load the csv data without the first (cad) file loaded, so there
Electronics Forum | Thu Jun 16 16:50:37 EDT 2011 | boardhouse
Hi Milroy, One thing to check is the FR4 Laminate being used - if this is a RoHs build is the correct FR4 being used by your manufacture. What layer count of board are you seeing the delamination on? Does you board shop Vacuum seal the packages wi
Electronics Forum | Tue Jun 14 17:32:44 EDT 2011 | davef
It depends on the flux and the down-stream processing ... * If there is adequate down-stream cleaning: We are ambivalent. * If the flux is low residue and there in no down-stream cleaning: We don't like using a syringe because it squirts liquid flux
Electronics Forum | dilogic |
Mon Jun 27 14:27:47 EDT 2011
Electronics Forum | Thu Jun 30 13:49:15 EDT 2011 | jholif
I am seeing a motor error 4 intermittently during operation. Sometimes it happens as soon as a program starts, sometimes it will perform 1-6 placements and then stop with it. I have swapped the stepper motor driver cards, the EPCU card, the SRX card
Electronics Forum | Fri Jul 08 15:19:56 EDT 2011 | markhoch
Your images are depicting signs of voiding. Some voiding is common. In an assembly like this, I would concentrate on minimizing the voiding as much as possible, and then using that as your baseline. I'd then treat the voiding as a process indicator.
Electronics Forum | Wed Jul 20 08:40:27 EDT 2011 | mosborne1
Umar - This is usually seen when the lead frame in the die attach is cut with a diamond saw instead of a lasar. We have seen this problem years ago from HP 7 segment displays. If you have Enviromental box (tenney box) you can temp cycle them from 0 d
Electronics Forum | Fri Jul 22 18:22:36 EDT 2011 | garym4569
We have a inline YesTech YTV-2000 in a newly configured SMT line and having issues with the transfer system. Shortly after the unit is put in run mode, the conveyor will turn on and run as if it is attempting to load a pcb even though no pcb availab
Electronics Forum | Thu Jul 28 19:08:05 EDT 2011 | garym4569
Right now we are mainly using it in bypass mode until we can program our new inspection recipes. We also tried setting a quick inspection program just to see if bypass mode was not working correctly. Still will not handle pcb transfer correctly. I
