Electronics Forum | Mon Feb 06 04:18:03 EST 2006 | Rob
Get a stopwatch & time your functions to see which is the slowest. I am guessing it's going to be the oven, printer (if using paste inspection) or the AOI. If you are talking the average or optimum speed in CPH, that would depend on the type of b
Electronics Forum | Thu Feb 09 10:29:37 EST 2006 | stepheniii
I worked at one place where they had a dishwasher. They had stopped using it by the time I got there. But if they had kept using it I would have gotten a clean glass and put it in to see how clean it came out. I think after a while with only one tan
Electronics Forum | Wed Feb 15 09:00:46 EST 2006 | GS
if you look at the J-STD-033B, you will see that such a large PQFP could stay even longer the 24h at 125�C even if internally is already totally dry. It could be, the balls can get oxided and also IMC (Inter metallic compounds) could grow avery littl
Electronics Forum | Thu Feb 16 11:10:31 EST 2006 | jax
It sounds like you are getting CPH numbers without taking into acount Machine utilization and efficiency. By doing that you can overlook what the real problems are. First find your utilization numbers... available machine run time with respect to th
Electronics Forum | Tue Feb 21 13:49:59 EST 2006 | slthomas
So am I. Have been for about 3 years. Metcal won't make the custom nozzles any more so even the cost ineffective route is closed. What's funny is that they make an adaptor to fit the FCR nozzles onto the QX2 but won't make one to fit the QX2 nozzles
Electronics Forum | Fri Mar 03 12:22:41 EST 2006 | russ
Haven't done any studies other than how clean can you get a stencil. I would clean 'em and inspect the apertures and see if you have any residues. If so, I would clean again the amount left would be so miniscule that I don't beleive it would cause
Electronics Forum | Tue Mar 07 14:03:45 EST 2006 | slthomas
The cheapest method I've found to measure anything in that size range is a reticle for a stereo microscope. I don't remember the resolution but it was 2 or 5 mil, I think. It's not rocket science but it's a nice tool for small scale measurements tha
Electronics Forum | Wed Mar 15 10:15:17 EST 2006 | paulinct
Kevin, Thanks for the reply! I haven't had a chance to see the Novastar. Now maybe I will save myself the trip. The TD rep is trying to contact someone close by so we can go take a look. I am definetely leaning towards TD because they have worked f
Electronics Forum | Tue Mar 14 09:54:34 EST 2006 | slthomas
"45* is a common angle of attack. Squeegee blades are commonly manufactured at 60*. The combination of the angle of attack and the blade angle results in an actual printing angle between the two due to down pressure and flex of the blade." Ahhhh, so
Electronics Forum | Thu Mar 23 09:29:58 EST 2006 | Joe
I agree that it's the probably the chain. The links get dirty and can bind up over time. When you pull the chain, check to see that each link rotatates freely with its adjacent link. I bet you'll find one or more links that are binding. This is the s
