Electronics Forum | Sat Jan 19 09:30:45 EST 2002 | davef
Yes, you can rework your thermocouples, but consider using a method other than arc welding. Arc welding can join thermocouples, but it uses a filler. The filler adds a third material that affects the slope of the thermal profile. We rework our the
Electronics Forum | Mon Jan 28 07:40:40 EST 2002 | cnotebaert
Yes and Yes, Your solder supplier should recomend a profile (standard profile) in most cases you can follow it. Of course you should be running a thermal profile of each board type to verify it is within the specified temp rang. You should also chec
Electronics Forum | Tue Apr 23 14:39:49 EDT 2002 | mkallen
Here's a related question: How hot can a PBGA get before popcorn delamination becomes a concern? 100 C? 150C? I realize that the answer will depend upon the conditioning of the part, so let's assume that the part is saturated with moisture. A pra
Electronics Forum | Tue Feb 19 09:06:11 EST 2002 | davef
Just down the street from the Cheek to Cheek Dance Studio, eh? It does seem sad ... http://www.drummoynerugby.com.au/whatsnew.htm Because we came from the land down under. The woman blow and then blunder. Can�t you hear, can�t you hear the thunder
Electronics Forum | Mon Jul 07 00:33:12 EDT 2003 | praveen
First we have to look in to the current situiation of the SMT line.Is the pick and place machine very old and can not perform consistently. Is the board to be inspected is very dense and have lots of connectors and fine pitch comp.with lots of 0402 c
Electronics Forum | Thu Mar 14 09:07:26 EST 2002 | cfraser
I can not tell you what the actual stress limits are. I can tell you that de-paneling PCB's by hand is a very poor choice. I have seen numerous accounts of cracked caps, resistors, and LED�s due to incorrect de-paneling procedures. I would recommend
Electronics Forum | Wed Mar 20 19:53:11 EST 2002 | davef
Your customer's question is reasonable. Before you can establish your control limits, you need to take 25 to 30 data samples of 4 to 5 measurements. This says you need a 100 or more measurements before you can start charting. And even this much
Electronics Forum | Tue Mar 19 14:23:44 EST 2002 | caldon
PETE - Since you are local to ACI/EMPF you can take a run over there and speak with Greg Parks,PhD on ROSA. His phone number is 610-362-1200 x 267 or email gparks@aciusa.org. This method is much better than the "re tinning". They can actually revert
Electronics Forum | Thu Mar 21 15:00:31 EST 2002 | stefwitt
it became quite popular to ask for a so called licensing fee from the supplier. Without, you will not get serviced. You will have to add this to the cost, if you don't buy from Fuji and require spare parts. If the machine can be demonstrated from th
Electronics Forum | Mon Apr 08 22:12:26 EDT 2002 | alex_kirichenko
Hi!! I've looked at few of those. Look very nice and neat, can place and solder vurtually any shape and size.... BUT you need feeders for parts.. and they are not cheap.. I think if you have just a few desighs you can try to justify it, but if yo
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