Electronics Forum | Fri May 14 05:50:26 EDT 2021 | williamrobbins
I've only used vacuum reflow on LED boards but I have heard that Vacuum may need to be reduced depending on components. I can't find the source at the moment but it was a study done by Heller I believe. I would experiment with different levels of v
Electronics Forum | Fri Apr 13 17:11:12 EDT 2007 | jmelson
Even though this is a "no clean" flux, are you (or the customer) cleaning the boards? If this is truly a low signal level device, there is no way you will get away without cleaning the flux residue. I do a lot of low-level hardware, and we have to
Electronics Forum | Fri Apr 13 12:24:07 EDT 2007 | teamcanada
We assemble for a customer that is having an inconsistent low level analog interference we believe with the no clean flux residue from Alphas OM5100 solder paste. We are considering testing Amtechs 4300 water washable no clean paste. We will test bot
Electronics Forum | Fri Apr 13 15:42:18 EDT 2007 | flipit
This is sort of interesting. We had a clock problem with Alpha OM-338 lead free paste. The flux residue was causing a clock problem and the clock was only a few KHz. We went back ot OM-5100 lead paste and the problem never occurred again. Chris
Electronics Forum | Wed Feb 23 18:09:43 EST 2005 | Austinj
I am currently using the following equipment for low volume and occasional BGA rework: BGA-3591/CSP-3501 115V Rework System. This system is fairly inexpensive, unsure of the actual price, However, can be used to rework QFP and PLCC components.(of co
Electronics Forum | Wed Sep 15 23:15:55 EDT 2004 | pdeuel
Im with Pete, Zero defects. We have high defect rate for many reasons. No line tech, operators set up and run then when QA reports defects engneers are called. Not to make people mad but our process engneers are lacking practical experance to fix pro
Electronics Forum | Tue Jun 17 13:12:57 EDT 2003 | Jipp
We designed small PCBs (typically 2"x5")for our some of our products for quite some time now. We did not use PCB extensively and just hand-produced everything but... We now use them more and more and they got more sophisticated. we're heading for 20
Electronics Forum | Tue Aug 03 10:11:11 EDT 2010 | keiths487
we have an HSP that keeps giving nozzle level (low) out of tolerance, we have performed lighting check, also this condition is only showing up on 3 or 4 heads...any input appreciated
Electronics Forum | Tue Aug 03 12:20:38 EDT 2010 | namruht
Is this on all 6 nozzles on those particular heads or just some. Try swapping nozzles with another head to make sure you do not have nozzle issues.
Electronics Forum | Tue Aug 03 14:28:23 EDT 2010 | keiths487
the "hooks" appear to be in good shape and are holding the nozzles up...machine will run even utilizing those head/nozzle combinations...we will check the valve, and verify proper operation, during non-production time....
