Electronics Forum | Tue Mar 29 15:17:19 EDT 2011 | davef
The minimum via hole size used will have a significant effect on the cost of the board as it limits the number of PCBs that can be drilled as a stack. Not withstanding the radio performance implications of small diameter via holes, typical minimum si
Electronics Forum | Thu Mar 24 11:04:41 EDT 2011 | smt_guy
Hi, I have a 2.75" x 1" x 0.027"thick CCA with SOIC16W and QFN56 as well as some 0201's, 0402's and QFN16 Components that are to be enclosed via molding process. Is there any Insert Moling, Over Molding Circuit Card Assembly Guidelines out there fr
Electronics Forum | Thu Mar 31 20:16:31 EDT 2011 | tkirk
We recently decided to try using a different source for our bare boards to save money. On two different batches of PCBs now from the new source, we are seeing beading including some serious enough to short out underneath 0805 parts. We have never re
Electronics Forum | Tue Apr 05 15:06:51 EDT 2011 | remullis
I am currently running at 2.12 minutes TAL using Indium 8.9HF. I am up to 68/cm min in a 8 zone oven. Indium recommends 30-100 sec or .30 to 1.40 minutes, I am think of increasing the conveyor speed until I fall with the 1.40 minutes, does anyone hav
Electronics Forum | Thu Apr 07 09:26:03 EDT 2011 | alcatel
Im trying to get the XY data to program the SMT machines. since i dont have the file, im trying to convert it from the gerber drawing. the closest one to represent the component placement is the solder pad. ive tried using linkcad to convert it to XY
Electronics Forum | Mon Apr 11 08:27:10 EDT 2011 | leemeyer
I have had similar problems before where the machine will intermittently stop with a limit error. Reset the machine and away it goes. Replacing the ribbon cable that runs from the head (37 pin D-sub)has solved this problem. This cable gets flexed a l
Electronics Forum | Tue Apr 19 14:58:05 EDT 2011 | rdoss
The ribbon cable would be my guess. I ran a IVc for about 3 years and we use to have to change out our cable at least once per year. I also wanted to add that you can contact Precision Placement Machines (PPM) for parts and service. We use to use
Electronics Forum | Thu Apr 14 04:55:21 EDT 2011 | don7888
Hi I have produced a spreadsheet that helps to plan production for SMT Jobs its very much a prototype and my Excel skills are not the best but I would appreciate if people could look over it and offer improvements. It currently operates using only I
Electronics Forum | Fri Apr 29 14:00:40 EDT 2011 | ppcbs
Our company is finishing up a design prototype for an easy to use re-balling fixture. 100% ball attach, and you can re-ball more than one BGA at a time. Initial investment will be in fixture cost, but you will be able to re-ball several chips in ar
Electronics Forum | Tue Apr 19 10:19:28 EDT 2011 | leemeyer
We currently have a job that uses press fit solderless pins. The pins are custom and only supplied in bulk packaging. I am looking for a machine that can orient the pins and present them to my insertion machine. Of course i need the pin to be present
