Electronics Forum | Thu Jan 27 10:22:21 EST 2000 | JAX
Dennis, Not sure why your so secrative about what machine but I guess it doesn't matter. When you start placing 0402 & 0603 packages the difference between height and width and length gets lost in tolerance. This allows the machine to pass parts t
Electronics Forum | Mon Jan 30 13:19:37 EST 2012 | deanm
Now knowing that its a Quad, I'm assuming it has QuadAlign which spins the part it just picked in a beam of light and a sensor measures the length, width and height of each part. If it falls outside of a defined range, it will throw it in the dump bi
Electronics Forum | Tue Jan 24 18:21:22 EST 2006 | fredc
I have some old Fuji windmills here and I checked the usefull travel. It is approxiamately 1.5mm, the nozzles are suposed to have .3mm "preload" wich will take away from the usable overtravel. The windmill I checked is a reject that from when we rebu
Electronics Forum | Mon Mar 20 16:37:41 EST 2000 | JAX
Long time, no see Doc. If you want to use an SOJ algorithm you can probably get away with manipulating the height of the part to get the lighting to refract in the areas you need to. Beware of parts parachuting if you adjust to much, although you sho
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 | Thu Jun 28 11:01:47 EDT 2007 | mmjm_1099
Hello all, I have a question in regards to part tolerance on parts. I called Fuji (not doubting them at all here just looking for more insight here) and asked them what the usual % tolerance on parts is. They came back with 30% of a part and the tole
Electronics Forum | Tue Apr 01 07:45:55 EDT 2008 | aj
Hi, We use the standard pin supports when necessary. Are your boards very thin i.e less than 1.6mm ? or maybe panelised ? Other things to check are Z0 placement height aswell as damaged nozzles,sticky nozzle/nozzle head , poor feeders along with t
Electronics Forum | Fri Oct 01 14:16:15 EDT 1999 | Rick
I know there are a ton of variables that affect the overall height of a BGA after soldering to a PWB but... I'd like to know if anyone has done an analysis of (or if it's documented) as to what the pre and post reflow height dimension as measured fr
Electronics Forum | Wed Jun 28 16:42:49 EDT 2000 | JAX
Paul, Most of this naming mojo happens during Gerber to Cad translation. If the Gerber software does not have a pre-defined name for a particular foot-print, The user has to supply one. Getting the supplier of the Gerber, or your CAD/CAM group to eli
Electronics Forum | Sat Aug 18 00:49:56 EDT 2012 | audere
When I see this on my QSP2 it is always caused by the nozzle not seating ideally but I tend to set my tolerances really tight. To test mount a nozzle and look at Z height. Now pick up the part (which in my case will suck the nozzle upward due to the
