Electronics Forum | Thu Jun 04 11:23:44 EDT 1998 | Frank S
If you could measure and chart 3 variables in my process, what would they be? The boards that I produce are on panels that are 12up and 2x4 up. All boards are single sided paper base w/o plated thru holes. They are on scored panels that measure 7"
Electronics Forum | Mon Mar 31 09:16:41 EDT 2008 | davef
What is changing the marking on the part? * Is flux residue coating the part to change the the way light reflects from the part surface? [Run a board with tape on the part, then remove the tape prior to AOI] * Is the heat of the oven changing the mar
Electronics Forum | Tue Apr 01 12:12:43 EDT 2008 | jdengler
On our machine we have found that some IC's require a different light for inspection based on the manufacturer. Have you tried other lighting options? You may need to talk to the AOI manufacturer to see if there is something the machine may be able
Electronics Forum | Wed Apr 02 13:56:03 EDT 2008 | slthomas
So your golden board isn't a valid representation of your production material. I don't use AOI but it sounds like either you need a vendor that can guarantee the same part marking appearance as you originally programmed to (not likely) or you need a
Electronics Forum | Wed Apr 02 15:35:27 EDT 2008 | jdengler
Our AOI machine can save various views of the same part number since we all know that different manufacturers will mark parts differently, some manufacturers vary their own marks. We get parts from the same manufacturer but different date codes that
Electronics Forum | Tue Apr 01 09:46:26 EDT 2008 | patsama_n
Thank you for kindness advice. From the result of IC after pass the reflow process. The color of letter will change to similar color of material compound of IC. Then when we inspection by AOI machine, we have many problem about high fault reject rate
Electronics Forum | Wed Apr 02 09:56:59 EDT 2008 | patsama_n
Every time to create new AOI program we must manual set at bright lighting level for each component. then this case we think the parameter of AOI setting it not concern for this problem due to the golden board that we use to confirm machine before st
Electronics Forum | Mon Dec 28 19:07:38 EST 1998 | flag
can some kind of through hole type connector pass through the smt process (with IR technology)???? the temperature factor or material factor?????
Electronics Forum | Tue Dec 29 03:37:09 EST 1998 | John W
| can some kind of through hole type connector pass through | the smt process (with IR technology)???? | the temperature factor or material factor????? | There's a company called Samtec (web site is www.samtec.com) who can provide these.They have a
Electronics Forum | Tue Dec 29 17:29:46 EST 1998 | Dave F
| can some kind of through hole type connector pass through | the smt process (with IR technology)???? | the temperature factor or material factor????? | Flag: Most PTH components are not spec'd for reflow processes. PTH component suppliers, nomin
