Electronics Forum | Tue Apr 03 13:10:15 EDT 2007 | slthomas
Personally I wouldn't count anything but minutes. You need to know how long it takes to perform each task in order to balance your line. What I'm gathering is that you've got one printer feeding 4 machines, all running different jobs or maybe a pai
Electronics Forum | Wed Apr 04 03:38:04 EDT 2007 | chrissieneale
The two machines in the middle are really really old m/c's so we try as much as possible to not to use them (apart from as very expensive conveyor belts). They run a fixed set up as although we have a bunch of different products they all tend to use
Electronics Forum | Mon Apr 09 16:46:54 EDT 2007 | stepheniii
Basically its spec. gives surety regarding its > chemical and physical properties. if he doesnt > follow the spec then may be he may find good > physical soldering appearance but chemically it > may goes down through Electrical or Environmental
Electronics Forum | Tue Apr 03 05:09:04 EDT 2007 | Haris
hi it looks like that you got this machine without money or simply like you robbed it. Even if you buy second hand, atleast you know how it works, SECONDLY WHY YOU DO NOT HAVE ITS MANUAL BOOK. OK, BELIVIEING IN THE ABOVE OPTIONS, if you ON pressing
Electronics Forum | Wed Apr 04 19:10:20 EDT 2007 | rgduval
Pete, Top-side temp might be an issue. What's the easiest way to check it? I seem to recall some thermal decals that we used to use a couple of jobs ago. I spoke with the flex manufacturer, and they recommended 4 hours at 250 degrees pre-process
Electronics Forum | Wed Apr 04 19:27:07 EDT 2007 | davef
The easiest, long term cheapest, and most accurate way to measure top-side temperature is to use one like: * http://www.amazon.com/Fluke-62-Mini-Infrared-Thermometer/dp/B000MX5Y9C/ref=pd_sbs_auto_2/102-7460227-1828165 * http://www.amazon.com/gp/prod
Electronics Forum | Mon Apr 09 10:16:14 EDT 2007 | davef
Pick and place: * Fuji: The largest pcb size is 20" by 18" for pick and place; 18"x14" for chip shooters. Fuji NP XL series allows 27 by 23 inch boards using a conveyor. * MYDATA has machines that can be configured to 34" X 44" X 0.500" * HSP 4796A a
Electronics Forum | Fri Apr 06 10:43:57 EDT 2007 | flipit
Hi, Anyone seeing difficulty is soldering MLFs or QFN with lead free solder? I have an MLF with 3 rows of pads on each of the 4 sides of the part and then the large center ground plane in the middle. The part is 20 mil pitch. Had good luck with l
Electronics Forum | Mon Apr 09 14:53:19 EDT 2007 | flipit
Hi, We were running with few defects with lead solder paste. The lead solder paste with stencil 0.010" X 0.020" and 0.004" thick stencil produced near defect free PCB assys. 0.010" X 0.020" (0.004" thick) lead = defect free 0.010" X 0.020" (0.005"
Electronics Forum | Mon Apr 09 16:48:27 EDT 2007 | ratsalad
How wide are your pads? What paste are you using? What is your board finish? Could you please post a link to the datasheet for the component? We place a lot of MLFs, both in a Pb and Pb-free process. Our standard stencil design for MLF compon
