Electronics Forum | Mon Jun 17 21:18:24 EDT 2002 | davef
I don't understand "well we can't paste the flip chip on its substrate because we are using flux". There is flux in paste. What's the difference? If you use solder paste, there will be more room for underfill, as compared to flux only. Some peopl
Electronics Forum | Thu Jun 13 11:25:40 EDT 2002 | davef
Help us understand your situation by telling us about: * Is this a terminal-to-terminal short on a single MELF? Or is this a terminal-to-terminal short between or than one MELF? * Clearance of 0.8mm is the distance between what features? * Size ME
Electronics Forum | Mon Jun 24 21:56:15 EDT 2002 | davef
Russ is correct. The sales-types telling you these stories are not acting reputably. You should not allow them in your plant. If you do not control the sales-types that gain entry to your plant, ask that person to come on-line here and we will exp
Electronics Forum | Thu Jun 27 17:24:17 EDT 2002 | Daan Terstegge
Never did a DOE on that, but I think it would be quite difficult to warp a board inside the oven if it was flat when it entered the machine. If there's no center-board support then it's another story, then the board will bend due to it's own weight.
Electronics Forum | Fri Jun 28 03:04:21 EDT 2002 | Dreamsniper
Forgot to include the following: Dwell time is from 55 secs to 68 secs. Indium specs for the paste is maximum peak @ 228'C and 30 to 90 secs dwell time above 183'C. PCB is a 6 layer board with Dimension of 205 x 166 mm but is slightly dense with 11
Electronics Forum | Mon Jul 01 22:10:55 EDT 2002 | ianchan
Hi mates, anyone has practical hands-on experience for the "Vectron" AOI machine, model: K2-AOI? appreciate any hands-on experiences shared on this issue. seeking everyone's comments +ve or -ve about this machine, based on its : 1) user-friendly f
Electronics Forum | Wed Jul 10 13:33:40 EDT 2002 | bentzen
Hi You might be right that the ban will go ahead eventhough some indications, like the report from Germany, show it will be an environmental drawback. In Denmark I�m aware of 2 lead-free invetigating projects on the way. I participate in one of t
Electronics Forum | Mon Jul 08 08:31:19 EDT 2002 | davef
Use where operators need to move frquently, say around process machiney, like placement or wave solder machines 2) wrist strap with continuos monitoring => => Use where operators don't move much and the potential to damage product is high, like a han
Electronics Forum | Thu Jul 18 12:05:19 EDT 2002 | yngwie
Experts, Today I received PCB in a punctured vacuum seal bag. the Humidity indicator change the colour to pink at 60%RH mark. The brd finish is Entek. Earlier our intention to get the board vacuum seal is because we want to ensure that the is no fr
Electronics Forum | Mon Jul 29 13:26:59 EDT 2002 | carln
Dave, Are you using The DEK plastic stencils with the 3906 or stainless steel? When we were using stainless steel, just about anything worked. It seems that the process for cleaning these *%#*&@" plastic stencils is either the best kept secret in
