Electronics Forum | Tue Feb 16 13:58:02 EST 2016 | tsvetan
this document http://www.latticesemi.com/view_document?document_id=671 may be good start point but note that how to escape from the BGA is not big deal, how to route your filtering capcitors, grounding, impedance control lof you high speed signals ar
Electronics Forum | Fri Feb 19 05:14:04 EST 2016 | truewanderer
Hi, i have a confusion to read the dimension of BGA package from the datasheet. I have attached the datasheet below. Is this diameter of the ball 0.30mm or 0.15mm. I'm confused about the values given in the box. Whats meant by M, S, A and B. Please g
Electronics Forum | Thu Mar 01 23:02:27 EST 2001 | Cosine Theta
You can easily get 99.8% for 0603 and 99.6% for 0402 out from a Panasonic MV2F, and these machines have no adaptive pick-up. To get 99.8% from HS-50 for 0603 or 0402 should be piece of cake. Anyway, is getting 99.8% pick-up = 6 sigma process?
Electronics Forum | Sat Mar 03 14:51:22 EST 2001 | stefwitt
Hi Dave, I think 6 sigma is here to stay. Unlike any other programs like ISO, six sigma goes to the people�s mind. With drastic examples like � you would not fly a plane which reaches its destination in a three sigma probability � you start to think
Electronics Forum | Thu Mar 01 22:59:30 EST 2001 | Cosine Theta
I am surprise that you get 99.5% pick-up rate out from the HS-50, unless you are refering to 0201 chip size. I can easily get 99.8% for 0603 and 99.6% for 0402 out from a Panasonic MV2F, and these machines have no adaptive pick-up. To get 99.8% from
Electronics Forum | Thu Mar 01 10:10:30 EST 2001 | Stefan Witte
Angela, besides the sense or non sense of six sigma and related meetings, you will have to break down the component feeding issue into several sections, which are all impacting the feeding reliability. 1. Component dimensions 2. Tape size 8, 12, 16
Electronics Forum | Tue Aug 28 14:21:39 EDT 2001 | Scott B
You have to be careful here. The figure is expressed as placement accuracy, not process quality therefore 3 sigma does not relate to 2700 PPM defects but 2700 parts per million placed outwith 15microns (0.0006" / 0.6thou). Extrapolating the distribu
Electronics Forum | Mon Jul 10 16:00:43 EDT 2006 | samir
QE's are the guys that sit in meetings asking the process guys --- "Uhhmmmm....my pie chart here says that we have 11 solder shorts on U1 for the week. WHAT'RE YOU GONNA DO ABOUT IT?" Unfortunately, most QE's dress nice, are tall, have gelled slic
Electronics Forum | Wed Dec 06 16:48:42 EST 2006 | Mario Scalzo
I would be glad to help you eliminate the solder balling and beading that you are seeing. As this is a fairly common defect, I would like to forward you an Application Note that we have developed that explains the cause and possible solutions. Most
Electronics Forum | Thu Oct 10 04:12:37 EDT 2013 | alexeis
Hi, We have software tool, called TopoQC, that displays topologically CAD view with failures and calculates solder points by one click. Also, you can calculate DPMO & Six Sigma values on the same screen. You can read about it on our website: http:/
