Electronics Forum | Tue Nov 19 14:58:26 EST 2002 | caldon
HEy all- We are in need of components. Chips, ICs, QFPs, BGA, SOIC, and so on. Does not matter the configuration, style, package. Stick, Tape, Matrix, Tray,Bulk. Typically should be "virgin" not used. And we would like these for a low price...FREE.
Electronics Forum | Mon Dec 02 13:55:49 EST 2002 | stepheno
Where I worked we used a different chip bonder. When we had trouble with flux entrapment in the epoxy from the wave solder, we checked the date of the epoxy. The tube didn't have one but the manufacturer gave a shelf life of 6 months and then the s
Electronics Forum | Wed Jan 22 13:31:23 EST 2003 | jonfox
Elongated slots!! Our older runs are a pain sometimes with parts (1206, 0805 chips) twisting as they go through cure. I'm sure that its not all due to the dots, but I'm sure that it doesn't help either. We don't see this effect on our runs that us
Electronics Forum | Tue Feb 04 12:50:36 EST 2003 | gregp
OK Jon, now let me speak hypothetically. We are in agreeance that bulk feeding can save money through increased machine up time. If this cost savings alone could pay for the bulk feeders (it is just a matter of time before it would) and the minimum
Electronics Forum | Wed Feb 05 11:13:46 EST 2003 | gregp
Your points are all valid. This is probably a service that the component distributers should provide. The reason I am harping on this issue is because I beleive is is possible to add several hundred part numbers to your pick and place on line inven
Electronics Forum | Thu Feb 06 17:16:41 EST 2003 | gregp
I do not know about the cost issues but as I recall the tolerances are tighter on bulk components and this usually means higher cost. I cannot find my bulk feeding summit information but these links give you some idea what was discussed. I don't kn
Electronics Forum | Fri Feb 07 15:17:14 EST 2003 | MA/NY DDave
Hi I am pretty sure it isn't the pad that is causing the problem. To me it seems like those via holes through the pcb either to an internal plane or to the other side. I can imagine creating an interesting stencil to accomodate the vias yet you are
Electronics Forum | Wed Feb 05 11:38:46 EST 2003 | Stephen
Don't forget placement. I"ve seen chips broken when they are being placed because they were thicker than the parts data used for them. This is not an issue on Panasonic machines because they measure the thickness of parts but I have seen it happen
Electronics Forum | Sat Feb 15 07:56:31 EST 2003 | Michael
Hello, I am looking for a very simple 2 port USB hub design that I can incorporate into an existing project. I am interested in using a Texas Instruments USB chip but I am not sure what other components are required to create the USB hub. If anyon
Electronics Forum | Sat Feb 22 11:27:16 EST 2003 | stefwitt
In the early days of SMT we were using vibratory bulk feeders for chip components. It was quite obvious that some of the components had to try several times getting through the gravity trap or with the right side up through the light sensor. As a res
