Electronics Forum | Tue Jul 11 10:13:22 EDT 2006 | SWAG
Over time, you might see problems with delam., blistering and warpage if using FR4 carriers. Depending on volumes, you might consider using durostone or some robust material like that for the production runs. Keep in mind that switching materials w
Electronics Forum | Mon Jun 26 12:12:07 EDT 2006 | Rob
Hi JEM, No, it is not required to attach the pads. They have not plated them either, so even if you try it won't be easy. However, the land pattern does supply you with the pads for the "support" pins to sit on & not get soldered to. Semi-helpful
Electronics Forum | Fri Jan 19 20:49:41 EST 2007 | Greg Ross
If you are using these "keycards" as a visual inspection aid for performing First Article Inspection or in Process inspection of SMT populated PCBs then you should consider an automated system which is optical scanner based. They are inexpensive comp
Electronics Forum | Thu Jun 29 09:13:02 EDT 2006 | MarkM.
I am looking for bulk of parts for a CP4/CP43. If you are sitting on those old CP4 parts and tired of wiping the dust off please let me know so we can discuss so I may get them from you. Also listed this in marketplace already as well. mmjm_1099@ya
Electronics Forum | Wed Jul 05 02:56:25 EDT 2006 | bvdb
Thanks Grant and Doug, The manuals never tell you that you can pull the leadscrew covers back - but thanks to your suggestion I was able to access the lead-screw. It didn't look bad at all and had some lubrication on it. I added some more lubricat
Electronics Forum | Thu Jul 06 12:52:35 EDT 2006 | samir
..and he can put the flux in and keep it a secret too from his customer.. RSS profile on wave?? I never heard of a soak zone for wave preheat...you may be burning off your activator..hence, the beads. For wave preheat, your main goal is to ramp up
Electronics Forum | Mon Jul 10 12:20:50 EDT 2006 | SWAG
Should look like a void (light spot in the ball pattern). Might even not show much detail like a void does, could look more like the perimeter of the chip in the x-ray or the detail you see between balls in the x-ray. Depends on how good the shot i
Electronics Forum | Wed Jul 12 11:46:00 EDT 2006 | flipit
Hi, One other note. You don't want gold to be more than 1% to 2% of the the solder joint. Above this percentage you will have embrittlemant issues. Lots of information on gold embrittlement on this site and on the Internet. I estimate your produ
Electronics Forum | Mon Jul 17 11:28:16 EDT 2006 | SWAG
Lower RH = more static build-up on production floor = greater chance of ESD damage to product. Primarily, I think your SMT print job can be affected by RH which could cause defects like the ones you mention. Look at ANSI/ESD S20.20 for more info an
Electronics Forum | Tue Jul 18 21:48:15 EDT 2006 | davef
We assume by "solder hole" you mean void. We believe void formation is driven by the thermal recipe that you've chosen to use. Search the fine SMTnet Archives for further discussion. There is a tremendous amount of current industry discussion on v
