Electronics Forum | Fri Mar 29 10:51:20 EST 2002 | lsmith
The IPC-EM-782 reads as follows: the adjustment factor is usually intended to increase the Z dimension slightly, but brings the Z maximum up to an even equivalent. Example if Zmax is 2.100mm then you would enter an adjustment factor of .100mm. The ad
Electronics Forum | Thu Jan 12 01:07:34 EST 2006 | pavel_murtishev
Good morning Mark, CAM (Computer Aided Manufacturing) products are designed to solve such tasks. You can try CAM350 for example. CAM350 understands different ASCII exported data from different CAD systems. CAD ASCII export contains all necessary inf
Electronics Forum | Thu Nov 08 08:41:15 EST 2007 | mattkehoe
Wow, that is a lot of info so early in the morning. What we are attempting is way less complicated than all that. 1 surface mount footprint, printed and reflowed without a component. Just a fused solder deposit on each pad. All pads the same size
Electronics Forum | Fri May 18 09:03:12 EDT 2007 | gregp
Don't confuse cost of ownership and cost per placement. They are two different entities. Also, it's not enough to say it...it needs to be true. One supplier claims "low cost of ownership" but has equipment that requires $700 placement nozzles. I'
Electronics Forum | Tue Mar 28 16:23:44 EST 2000 | Michael Parker
While attempting to use the IPC-SM-782, land pattern calculator, I came across the term Component ID. (for example - "C1005") I am not sure what this is. I wanted to verify the IPC recommended land pattern for a Chip Capacitor with 0603 size. Can any
Electronics Forum | Fri Sep 09 05:58:58 EDT 2016 | jswatt
yoru x-ray supplier should be able to help however you can do a rough cut calculation byt just printing it out and measuring it, your interested in ration (%) of the void and where in the joint it is to tell you it it's really an issue. Also importan
Electronics Forum | Tue Aug 28 12:05:42 EDT 2001 | mparker
The advantage of DPMO is that the numbers used are PPM, (Part Per Million), rather than percentage. Percentage can distort, depending on volume. For instance, 100 units processed, 25 defects found = 75 percent yield. 4 units processed, 1 defect found
Electronics Forum | Tue Aug 28 13:46:46 EDT 2001 | mparker
To clarify on "Opportunities"- With 1000 components, the opportunities are far greater than 1000. You have 1 opportunity per component for a component defect i.e. bent lead, damaged part, tested bad, etc. You have a second opportunity per component
Electronics Forum | Fri Mar 02 09:50:04 EST 2001 | stefwitt
Dave, I did assume Angela meant components ready for pick up. It would be too time consuming for any machine to measure the component availability prior to pick up. If we assume that the feeder advances in a rate of six sigma ( 3 defects per mio ) t
Electronics Forum | Mon May 24 12:54:25 EDT 2004 | pjc
Maybe here's an opportunity to get a new oven. Electrovert, BTU and Vitronics offer closed-loop N2 control as an option. This, together with other improvements on oven design can reduce N2 consumption by as much as 40%. Not to mention reductions in e
