Electronics Forum | Wed May 07 01:50:03 EDT 2008 | andrzej
We have received in one lot PCBs with defect of not wetting properly. Pads were finished with HASL but they were matte rather then shiny (attachment). For me looks like they are oxidized. Interesting is there was just top side with such defect. We h
Electronics Forum | Fri May 16 03:37:04 EDT 2008 | ianlg
Hi There is a Benchtest on the EPP Stand at the SMT Hybrid & Packaging exhibition that may be on interest to you where 11 printers are going to be tested against each other. It should be interesting to all who are looking to purchase a screen printe
Electronics Forum | Fri May 23 16:38:28 EDT 2008 | wayne123
Well if you are getting bridges under, one thing that we used to do was flood the part with flux and then run it back through the reflow. Keep in mind we were not a High reliability manufacturer. This practice didn't hurt OUR boards, and most of the
Electronics Forum | Wed May 28 07:44:28 EDT 2008 | rgduval
Hi, AJ, In general, the peak PCB temperature is variable depending on the profile used. We try to keep our peak temperatures in line with the paste manufacturers recommended temperatures; ignoring the peak temps for the PCBs. For the peak temps yo
Electronics Forum | Wed May 28 08:46:39 EDT 2008 | ck_the_flip
I've talked to several Applications Engineers and Chemists from a couple of different paste manufacturers and they confirm that the profiles on their data sheets are nothing but guidelines. It's up to you, Process Engineer or Process Tech, to develo
Electronics Forum | Thu Jun 05 21:59:22 EDT 2008 | mika
bsumfg, The very best anybody said lately!! This should go straight into the the manual! I totally agree with you; Just an add: The fid's should never be mistaken for a test point who normally is between 1.0 - 1.27 mm so make the fids 1.5 mm. round
Electronics Forum | Wed Jun 04 11:25:09 EDT 2008 | grics
Hey! Thanks for the response... I was getting a little lonely out here. Anyways, it has absolutley noting to do with the quality of Aegis or Valor. I have actually heard nothing but great things. As a matter of fact, Aegis will be down tomorrow to
Electronics Forum | Mon Aug 04 16:28:49 EDT 2008 | grics
Hey Patrick, thanks. The area that is dark (half circle) is where the camera was. It is the same color as the above. But you may be correct still. I also noticed that the majority of the solder balls were along the "Dark" blue depression around the
Electronics Forum | Wed Aug 13 09:11:19 EDT 2008 | rgduval
Shane, We're assuming that the software is similar to our Heller 1800. We're also assuming that the oven has thermocouple ports, and that you have the thermocouples to plug into them. From the screen that displays the zone data, there should be a
Electronics Forum | Thu Aug 14 16:18:08 EDT 2008 | mbnetto
Hello I'm mounting a notebook board with the memory conector manufactured by CONCRAFT. We are facing some soldability problems with this conector because some ground leads don't solder on the pads. I tried 4 different brand of solder paste, tried to
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