Electronics Forum | Mon Feb 24 17:56:55 EST 2003 | MA/NY DDave
Hi Let me just give a little and someone else might chip in with fast and ready details. I don't know what your product or service is, so I am not sure how direct to the FDA you need to be for your shop. If you work for someone they should handle t
Electronics Forum | Tue Mar 04 12:05:27 EST 2003 | ggspook
Thanks Mike Honestly the whole subject of repeatability is Is confusing i.e. I do perform placement tests using glass plate�s Fuji IP3 and Pam on the Fuji chip shooters which calibrate to 3 sigma but I cannot guarantee placement repeatability As y
Electronics Forum | Mon Mar 10 14:13:36 EST 2003 | msivigny
Hello Bill, As I mentioned in an earlier thread, I was not familiar with the PAM system but have since been given a quick run down on how it performs its measurement routine. It is an acceptable way to measure and optimze Fuji chip shooter performanc
Electronics Forum | Sun Mar 09 18:33:04 EST 2003 | Dean
Tact time is a poor measure of your throughput capability. The Number of boards produced per hour or shift or 24 hour period is the true measure of what you are really doing. Your theoretial "tact time" can be used as a metric to judge performance,
Electronics Forum | Fri Apr 11 11:26:09 EDT 2003 | Brian W.
Cracked capacitors usually are not found at ICT. Unless the cap is completely cracked, the capacitance may not change much, and the usual failure mode is a leakage current. This is usually only seen in ESS type testing, when temperature and humidit
Electronics Forum | Thu Apr 17 17:38:57 EDT 2003 | Takfire
Dave, I am not exactly sure what is driving them to believe that this is a capacitor issue. It is unfortunate, that this belief has slowed their activity in further understanding their manufacturing process. The caps are BME (Base Metal Electrode
Electronics Forum | Sun Apr 20 07:20:09 EDT 2003 | tsongshe,Bryan
Thanks. *We use TO252 package,but sometimes the skewed components also happen on TO263 package. *we use TO252 package parts from different suppliers,and when we change the parts from one supplier to the others,few skewed transistors happen again. *
Electronics Forum | Mon Apr 28 18:34:17 EDT 2003 | Brian W.
We typically do not try to pick up and hand placve chip resisstors and capacitors. The risk and cost is too high for components that are a penny or less. We take into consideration that on many of our components, someone will have to test them to v
Electronics Forum | Wed Jun 11 10:27:33 EDT 2003 | caldon
Frank-In addition (Dave gave some good scoop) we use a Pyrex Glass board to run through the wave. This is useful as you can see through the board .....you can watch the flux coverage, preheat, and Wave (be it Chip, lamda, or??) as it goes through the
Electronics Forum | Wed Jun 11 12:29:19 EDT 2003 | JB
There are many variables that could cause components to be misplaced. Using the overall tack time reduction is in reality putting a band-aid on a larger problem. Are your small components shifted as well? ( 0402,0805 tec) Components "twisted or off
