Electronics Forum | Wed Sep 15 12:22:51 EDT 2010 | remullis
Mike, Another thing to consider is the type of switching they may use. Older Asymtek masking machines used transitors to communicate upline and downline instead of dry contacts. The problem we had with this is dropping enough voltage across them to
Electronics Forum | Wed Sep 01 14:59:12 EDT 2010 | eezday
I've been working to bring a Universal GSM-1 back to operational readiness at a university. I have lots of pnp experience but little on the GSM. The software is at 3.2.3. When I try to manually "zero the board" in the PWC menu I get only a black s
Electronics Forum | Wed Sep 01 17:34:18 EDT 2010 | kevm
Having solder flow issues on gold pads. Issues started when supplier switched adhesive tape used to cover pads during varnish process. By running SEM/EDX and XPS analysis it has been determined that the new tape leaves behind a thicker organic residu
Electronics Forum | Thu Sep 02 13:19:52 EDT 2010 | remullis
I am having issues with the air dump on this machine. When you palm down or break interlocks the air dumps as it should however I'm getting a short burst of air back through the system. The problem with this is it's just enough to trigger the table l
Electronics Forum | Thu Sep 02 15:01:52 EDT 2010 | James Neal
Manufacturing-wise, is there a problem with doing a single panel with both four layer and two layers designs on it? I do prototype runs with multiple designs on the same panel, and I'd like to start including four layer. It seems to me that I can g
Electronics Forum | Thu Sep 09 12:01:35 EDT 2010 | davef
We're guessing the ink wasn't fully cured, when they finished the ENIG. If the supplier is correct that it was your 'process that is caused the changes,' then they certainly won't mind you bringing over a couple of unstuffed boards and running them
Electronics Forum | Thu Sep 09 13:25:22 EDT 2010 | eezday
I've seen the purple silkscreen before on ENIG board built with PbSn process. I would think that if temp is the issue the lower process temp would not have caused the purple ink. I remember that the flux I used was water soluble and I attributed th
Electronics Forum | Wed Sep 08 07:49:01 EDT 2010 | vleasher
We are a CM looking to do some low volume taping for the purpose of getting some undesirable parts out of track feeders. We don't always buy in the volume to get reel and it seems some components ie.Maxim only seem to come in tube. Is it typical for
Electronics Forum | Mon Sep 13 07:14:34 EDT 2010 | mun4o
Hi all, we have two smd line, with 2 topaz X each.Software for optimizing is PPS v.8.0.The problem is that when PPS optimazing the programme, IC, diodes and other polarity components are with wrong orientation.But, I see the orientation onli when str
Electronics Forum | Tue Sep 14 00:35:47 EDT 2010 | sachu_70
The PPS helps to prepare a program off-line without affecting on-line production. However, there are certain efforts that we must consider, such as identifying the part orientation on feeder vis-a-vis its placement orienation on PCB, and confirming s
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