Electronics Forum | Sun Mar 04 07:48:50 EST 2012 | dilogic
Are you sure that the parts are bouncing? We had similar problem where diodes were placed very closely and occasionally nozzle pushed already placed part away (due to pick-up tolerance)...
Electronics Forum | Mon Mar 05 17:54:07 EST 2012 | swag
Three ideas for you: 1) Make sure nozzle tips are clean. 2) Check coplanarity of leads to bottom of body. If leads are above body, it could be the are not contacting paste well. 3) Investigate static charge in the parts caused by the feeder or
Electronics Forum | Sun Mar 04 01:56:37 EST 2012 | eadthem
What we have had recently is a lot of larger thin (32 thou) thickness boards that have had issues with SC90 diodes bouncing off the pads in the final PNP machine. Our setup, universal instruments GC120 or quad beam 30 spindle lightning heads. This m
Electronics Forum | Mon Dec 13 10:38:38 EST 2004 | fastek
This I have heard from (2) different sources. Fuji feeders for CP series machines are now being counterfeited in China and are being sold as original. They will in all appearences look completely legit in original boxes and with Fuji bar-codes. Once
Electronics Forum | Tue Dec 14 03:45:31 EST 2004 | rlackey
I don't think that the ones I encountered were "fake", I think that they were cheap copies - ie. actually meant to work, not just to part someone with their cash - engineered to a price (just a very low one!). It does seem a bit strange to go to the
Electronics Forum | Fri Mar 09 05:06:09 EST 2012 | grahamcooper22
Is your solder paste deposit drying out? Or if the paste deposit is small or there is insufficient paste then the tack between the device and paste will be poor so it can easily come out of the paste during its placement or placement of other parts.
Electronics Forum | Sun Mar 04 09:53:00 EST 2012 | eadthem
What i have on the original 2 problem boards is the parts next to it are SOIC8 and placed using a 125F(.125" dia) 1 of witch is close and we have to Z zone it to place the SOIC last, the others have more than .02" clearance on all sides. The other
Electronics Forum | Mon Dec 13 12:02:20 EST 2004 | Rob
I've seen 2 types from China, one type was an amazing copy (Fuji supplier's factory back door possibly?) and the other was a cheap copy. The cheap copy was adequately functional, but I wouldn't want to bet on it's long term life.
Electronics Forum | Mon Dec 13 12:29:12 EST 2004 | fastek
Interesting Rob. The fake ones that I was told about would fail within minutes as the index wheels would be reduced to metal shavings right away.
Electronics Forum | Tue Mar 01 10:55:07 EST 2005 | spot
A lot depends on the complexity of the board/process as well as the amount of placements. If the board has few placements and the parts are not smaller that 0805 then doing all the rework after completion is ok. The human eye can only pick out obvi