Electronics Forum | Fri Feb 27 12:35:13 EST 2004 | Gabriele
Some literature recommand to increase TG of PCB when Soldering Lead Free (ie.SAC alloy Reflow and Wave ), some literature do not mention it, some recommand it only in case of large panels, etc. According to your experience,what is the best practice
Electronics Forum | Sat Feb 28 08:15:50 EST 2004 | davef
J-STD-001 has what you need. 3.6 Facilities ......................... 4 3.6.1 Environmental Controls ........... 4 3.6.2 Temperature and Humidity ......... 4 3.6.3 Lighting ......................... 4 3.6.4 Field Assembly Operations ........ 4 3.6.5
Electronics Forum | Sun Feb 29 23:45:19 EST 2004 | Vincent Truong
Hi everyone. I'm in my last semester of my SMT manufacturing 3 year diploma program. I'll graduate in April 2004. I would like to go further study of this field. I'm planning to get the SMT engineering degree, can someone give me a direction what u
Electronics Forum | Mon Mar 01 13:06:55 EST 2004 | Chris
Hi I have a question about fiducial mark. Can anyone explain me how it is work?. Do you have to during programming set exactly center of the mark? or approximate point the mark and the machine during placemnt will correct it. In some P&P i have met
Electronics Forum | Tue Mar 02 11:06:14 EST 2004 | Morris
I'm wondering what others are doing with splicing SMT carrier tapes when necessary. (e.g to join cut tapes etc) The system we have seems kind of clumsy and when a tape is spliced, often causes jams in the feeder anyway. Any systems or advice you can
Electronics Forum | Fri Mar 26 00:33:32 EST 2004 | alwil
I'm keen to find out more about the SAWA cleaner. What type of solvent is being used. Does anyone use water or any other enviromentaly friendly agent. Is the result with glue stencils good.Is this a messy machine to use. Any feedback would be good. I
Electronics Forum | Sat Mar 06 08:13:28 EST 2004 | davef
We think that's a good idea. We bring in a company that monitors various people in the shop for lead, just like Ken does, once a year as an element of our plant monitoring program. Ken do you run the test yourself? If so, what: * Equipment do you
Electronics Forum | Tue Mar 09 22:13:20 EST 2004 | Ken
What x-ray system are you using? Check out Dage. I bet you have voids...just can't image them. Why the fuss over voids? Voids terminate the crack propegation and can extend the time to failure for creep fatigue. I would not be concerned unless yo
Electronics Forum | Fri Mar 12 12:59:50 EST 2004 | babe
Sorry for the late reply, I am an ersa dealer may I suggest mounting an alternative thermocouple attached to a DMM in close proximity to the BGA. See what the differences are in your readings from the DMM and the Digital temp reading on the IR550A. I
Electronics Forum | Mon Mar 08 11:54:06 EST 2004 | Wayne Smith
Currently experiencing a problem where the plastic molded bodies of tantalum capacitors are cracking during my SMT processing. Caught after our conformal coating process. I don't know where in the process they cracked. Currently running an exper
