Electronics Forum | Tue Aug 25 16:28:11 EDT 1998 | Al Knudson
Hello, Our PWB supplier has requested that a change in the laminate material to reduce the incidence of pad lifting. The standard laminate materials (Polyclad PCL-FR-226 with a glass transition temperature of 135 C) have greater z-axis thermal expan
Electronics Forum | Thu Jun 18 21:19:17 EDT 1998 | Dave F
| I am currently using some pick & place equipment and would like to measure their cpk using a glass plate and glass "components" with vernier scales. I have seen these kits but am trying to track a supplier down in UK/Europe. | Any help is much appr
Electronics Forum | Tue May 07 17:24:43 EDT 2002 | stefwitt
Most machine supplier have CMM's and proove their accuracy with attached protocol of CPK. We used to have a machine from View Engineering. I can not locate their website, I only found a used machine. http://www.equiptechonline.com/PDetail.cfm?pid=17
Electronics Forum | Wed Oct 23 15:33:38 EDT 2002 | Randy V.
Dye penetrant is a liguid that will wick through very small cracks. I used over 10 years ago for checking cracks in glass feedthru's in hermetic packages. You put the dye on one side of the seal and developer (white) on the other side and the red dye
Electronics Forum | Tue Jun 17 09:22:02 EDT 2003 | davef
Higher that recommended is more brittle. Look here: http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=17906 Q2: Will some of my Ceramic Caps crack during the wave soldering process because of the heat? A2: Probably Q3: Can you see any pos
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 May 17 23:59:16 EDT 2006 | KEN
Repeatability data please. Please provide source. Can you provide the standard deviation and sample size please. Does this data represent all major angles? Was this data independently verified? Was this data collected using glass parts or p
Electronics Forum | Wed Feb 04 10:38:38 EST 2009 | davef
Typical Protective Equipment Includes: * Safety glasses: While you're waiting for others to reply, search the fine SMTnet Archives to find threads like: http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=54221 * Fire Resistant Smock * Face Sh
Electronics Forum | Thu Sep 23 11:37:43 EDT 2010 | flipit
I had 4 of these machines. They are good machines but I have seen this error often. Is the problem only on one head L or R? If so swap electronics L to R and see if it follows. You can even swap the Y motors. The items that could cause this prob
Electronics Forum | Tue Feb 01 01:01:19 EST 2011 | jeffr
The YAMAHA manual is not much better. Topaz is slightly harder to calibrate than the later machines due to the machine being fussy about the lighting. Remember that you must setup the QFP68 both in the program for placement and also in the Database f
