Electronics Forum | Sun Dec 28 15:19:49 EST 2008 | davef
A long time ago, Phil Zarrow wrote �Evaluating solder paste - not an option� to give tools for evaluating various solder paste properties. You are interested in �post placement tack.� Find Phil's paper at: * His site http://www.itmconsulting.org *
Electronics Forum | Wed Dec 31 14:10:33 EST 2008 | kmakiya
We are in the northwest and there was no state requirement for technician certification. The DoH encourage all to register their xray equipment with them and that was about it. We had their physicist come to our site to do leakage tests every time we
Electronics Forum | Fri Jan 02 09:39:30 EST 2009 | angiewest
Adam, Our X-ray requirements are due to state requirements (WV 64CSR23) has a list 'Subjects for Instruction of Radiographer Trainees'the main headers are A. Fundamentals of Radiation Safety B. Radiation Detection Instrumentation to be Used C. The Re
Electronics Forum | Fri Jan 02 10:12:10 EST 2009 | adamcrum
Yes, you are all helping me a lot. I have been doing research as well and although there is no requirement to have a certified tech, we do have to have the machine registered with the DoH as well as have a person trained in radiation saftey who has t
Electronics Forum | Mon Jan 05 14:29:45 EST 2009 | pjc
In PA there is an annual license required, about $200 per year. There is an initial inspection and at that time they will want to see radiation survey, installation documents that state individuals have been trained on the machine. They say they try
Electronics Forum | Tue Dec 30 11:29:13 EST 2008 | davef
People use green soldermask because people use green soldermask. In the 1950s, the US military selected green, because they liked green better than other colors. So, here we are. We believe the performance of red and blue is comparable with green. T
Electronics Forum | Mon Jan 05 09:59:51 EST 2009 | prkonrad
HI, i work for an EMS company and i got a few remarks on the solder mask question. In the manufacturing of PCBs there should be no difference if they use other color solder mask, but in the production of electronic assembly it could make a difference
Electronics Forum | Mon Jan 12 01:20:07 EST 2009 | sachu_70
Hi Konrad, I would suggest you include a clear mention of your requirement towards mask color as a "Special Note" in PCB Gerber / PCB drawing, for ready reference by your PCB manufacturing during fabrication. However, slight changes in color shade co
Electronics Forum | Mon Jan 12 03:55:27 EST 2009 | prkonrad
Sorry, if my first comment was a bit offensive against PCB manufacturers (it was not really intended :( ). We have already discussed the above mentioned issues with the manufacturer, and they stated, that everything is within specification... (and y
Electronics Forum | Tue Jan 13 10:35:06 EST 2009 | evtimov
konrad, why did you change your mind now? Now you can agree with PCB manifacturerers? I didn;t hear anything in their defense and you gave up. If colour is not the same each time, that means they don't have standarts or knowledge to control it, an
