Electronics Forum | Fri Mar 26 17:12:43 EDT 2010 | spitkis2
Krish, Looks like your peak temperature is around 230C and time above 183C is about 120-150 seconds. This is excessive for a leaded BGA. You should be aiming at 200 - 215C as the peak joint temperature with time above 183C of 60 -90 seconds. The p
Electronics Forum | Sun May 02 11:36:27 EDT 2010 | jdeluna
I do agree with Jerry: you should apply more paste on it, either with a step stencil, or doing overprint on it by, let's say 120% on Transformer's pad. Also, you need to check : a) there's smooth movement on transport process after the placement, no
Electronics Forum | Tue May 04 12:43:55 EDT 2010 | rgduval
Good point on the shop air. Shop air can also generate a tremendous amount of ESD. There are special nozzles you can get to minimize it. We use our shop air mostly for blowing out connectors, and larger components that have a history of trapping w
Electronics Forum | Fri May 21 15:45:29 EDT 2010 | pforister
iv40, Thanks. The PCB that we are populating the BGA hybrid onto does not have holes in the vias. I think the manufacturer indicated that on their hybrid it has holes in pads. This hybrid is a PCB assembly with BGAs and other components populated
Electronics Forum | Mon May 31 11:04:06 EDT 2010 | aj
Hi Manuel, Do you not have a fine pitch placer?if not may be you need to slow down the placement speed on the QFN - I would imagine you would get a lot of fails trying to use the vision to pick up the component lands. We place thousands of QFNs and
Electronics Forum | Sat May 29 14:03:18 EDT 2010 | padawanlinuxero
Hello guys! I have a problem I had to change the MI Board on a MYDATA TP9-4 machine because it was firing 3 or more feeders at the same time, after the change it run great but then for some reason after a while it start to show an error message that
Electronics Forum | Tue Jun 15 22:31:06 EDT 2010 | Mag10
Depending on the how you plug the via, the void level can significantly affected. If you have via plugged from the bottom side; i.e. opposite side of the component, you will see alot of void due to entrapped air in the via hole. I found work best wh
Electronics Forum | Fri Jun 18 12:40:09 EDT 2010 | stepheniii
Are you talking about mini stencils for individual components? If so we check here first http://www.circuitmedic.com/products/stencils.shtml I think circuit medic only has ones for parts they have done repair work for. Their selection is a bit unu
Electronics Forum | Fri Jul 09 19:20:49 EDT 2010 | rway
This table, is it in a database? And is it indicating the number of component, solder insp. etc based on one board or one panel? It needs to be based on the total number of inspection on your panelized pcb. The equation works, you may just be look
Electronics Forum | Tue Jun 29 14:45:42 EDT 2010 | smt_guy
Hi, Maybe you guys can share your 2 cents here.... I have 3 lines of SMT Machines and I want my most common parts (components) and cheap parts like 5 cents per part and below)to be warehoused or stored in my manufacturing floor under production con
