Electronics Forum | Thu Jan 11 22:01:09 EST 2007 | davef
Joe: I know this is not the correct forum to post chip "reworking" questions. Reply: Rework questions are as appropriate as the next topic here on SMTnet J: BGA will not reflow at any normal temperature level. I believe these chips may have been gen
Electronics Forum | Fri Mar 16 16:26:34 EDT 2007 | James
This shows once again that this "what to buy?" and "What do you think about this machine..." crap really has no place in this Forum in my opinion. People have to get off their ass and do some investigating on their own. You have to be living under a
Electronics Forum | Thu Mar 29 20:15:41 EDT 2007 | darby
PCB > Origin > Origin 0 4 Teach the corner of the pcb at the mechanical stop. This data is from the machine origin. For a unit with a teach camera it will probably be around -25x, 95y. For a beam sensor around 70x, 28y. This is for a right to left
Electronics Forum | Sat Mar 31 11:03:21 EDT 2007 | jmelson
I have a left to right conveyor, so the X offset is larger, but that is not major. You say "Make sure you are teaching with the unit that the machine defaults to or asks for." This is the beam sensor, and I have found no way to change this, either
Electronics Forum | Thu Apr 19 08:50:38 EDT 2007 | rgduval
Welcome to RoHS. Or, at least, to the version of RoHS that I've had to deal with since I started with my current company. Blowholes and pinholes seem to be common in PB-free manufacturing. At least, they have for me here. I also note that IPC has
Electronics Forum | Fri Apr 20 10:27:54 EDT 2007 | Machine Designer
I'm not a protectionist (yet), but I can surely know a trend in my industry when I see one. In the past 10 years we were looking to outsource precision machined goods to Asia. Although the quality wasn't there, the cost incentives made up for it ev
Electronics Forum | Fri May 04 02:32:10 EDT 2007 | jmelson
Thanks! Well, the procedure in the book says to first calibrate the mech aligner with the beam sensor, but that exceeds the X travel. I guess you can just eyeball it off the nozzles and then use trial and error. While poking around on the machine
Electronics Forum | Tue Jun 26 15:28:01 EDT 2007 | hegemon
There are a lot of variables in BGA rework in general, and the switch to lead free has only magnified some of the sore spots. Perhaps with a little bit more information someone here can be of help. What is the size and thickness of the PCB? What
Electronics Forum | Thu Jun 28 20:11:32 EDT 2007 | rfrog
Hi folks, I've been bouncing off of MyData technical support for some time on an issue with a MyData machine. Seems that this My9 likes to skip an 0402 placement at a rate of ~ 1000/million. Profile: MyData My9 Mechanical centering Midas only
Electronics Forum | Fri Aug 17 12:33:23 EDT 2007 | mika
If you run into any trouble with this, I will be more than happy to help you out. We have a spec. that includes everything that UIC says the transformer has to do. Now we contacted a local transformer manufactory; and guess what: we bought 8 of them
