Electronics Forum | Thu May 09 17:07:56 EDT 2002 | davef
Troubles, troubles, troubles. If it weren�t for bad luck, I wouldn't no luck at all, eh? Tough business. Comments on your trouble are: * On machine vision errors from less than ideal capacitors: This is life. Reprogram your machine to either wid
Electronics Forum | Tue Jan 02 02:30:18 EST 2007 | _____
Ahh yes, 254. Don't give up on the other vision types. 254 can give you skewing as well. Your width and height are awfull close. Even with the 0.5 tolerance it is using the tolerance and saying that it is OKAY. Maybe what you measure is 1.8mm for wit
Electronics Forum | Sat Dec 30 19:02:19 EST 2006 | mika
This type of component packages works best with vision type: 254 - irregular. Measure the total package length including the leads. Also set the body dimension x-y tolerances to at least 0.35mm and the the pick up x-y tolerences to 0.5mm in the part
Electronics Forum | Tue Nov 30 21:23:55 EST 1999 | cklau
hello; When we are doing component land pattern design , one thing will always be in our mind; that is the basic criteria or common land pattern design guideline for reflow and flow solder assemblies. For basic fomula in calculating resistors are:
Electronics Forum | Mon Sep 08 11:38:52 EDT 2014 | spoiltforchoice
They key requirement before any fancy tools is careful storage, stock control, labeling and handling. If your parts are incorrect before they even get to production, you're screwed. As gregp suggests, to get consistently correct value and orientation
Electronics Forum | Thu Mar 08 16:17:59 EST 2007 | stepheniii
Your process makes a bigger difference than the machine. I worked for and OEM with Panasonics. They eliminated all 5% resistors, wider tolerance capacitors, and went with as many dedicated feeders as we could. We also staged jobs. We had one runnin
Electronics Forum | Tue Feb 26 11:31:38 EST 2013 | stephendo
Do you have any components that don't come off the machine? It sounds like you work for an OEM, not a CM. I used to work for an OEM with similiar changeover numbers as you. I had them make a list of very common parts that never came off the machine.
Electronics Forum | Wed Apr 28 20:57:22 EDT 2021 | stephendo
It will be tough to get a good line for that cost. You might want to start by looking at Mydata and Juki for the machines. Ekra for the screen printer and Heller for the oven is where you might want to start. If you have not already you might want
Electronics Forum | Fri Jun 14 00:47:17 EDT 2013 | mun4o
Thanks , Reese.Yes , I check the capacitors with C-meter.When measured with C-meter , all capacitors are OK - +/-10% of the value. I can not underst?nd "Note: This is not a summation). Y5V -- -20% of nominal value, -part tolerance, -machine toleranc
Electronics Forum | Tue Jun 18 03:16:46 EDT 2013 | mun4o
production lot is 4000pcs.About 70% of capacitors are out of tolerance ( +/-20%).There are 3pcs C=10u per PCB, in different location.Samsung capacitors wich we use are 1,5 years old - i checked this information from our supplier " Rutronik ".I have
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