Electronics Forum: rejection of components (Page 1 of 88)

Contamination of components

Electronics Forum | Tue Feb 27 10:29:48 EST 2001 | davef

Bud: Theoretically, I agree with you in-bound parts should meet your solderability requirements. Unforunately in real life, it aint gunna work, because if your buyer can't get you parts now, well 'cept the crusty ones that you're seeing, can you im

LED rejection driving me nuts

Electronics Forum | Thu Apr 11 13:50:26 EDT 2013 | jimmyboz

I don't know Juki machines, but I assume it is using vision. On these components I have sometimes called the leads the body and the body the leads. I'll make a picture if this sounds like it will help.

LED rejection driving me nuts

Electronics Forum | Thu Apr 11 14:11:10 EDT 2013 | dontfeedphils

If it's using the laser alignment try changing the part type to "SOT" instead of chip, and then enter the dimensions for only the body of the component. The "Chip" setting will measure the part half way down the body, the "SOT" setting will measure

Quad IVc Part rejection issue

Electronics Forum | Wed Sep 12 06:13:22 EDT 2012 | bobpan

Glad i could help.....now this is a little harder....been a long time since i have done comp. fids and i dont have a machine to test....but check these things... 1. In the teach menu.....there is teach component fiducials. Make sure you do this with

Quad 4C part placement rejection

Electronics Forum | Thu Nov 17 14:33:02 EST 2011 | olddog

Thanks again Bobpan for all of your help. I hope some of my questions are dumb ones. Regarding "first", the QA error 0, you were right. In checking the setup, for some reason theta was 65227 instead of the 0 that I thought I had set. Regarding "sec

Quad IVc Part rejection issue

Electronics Forum | Tue Sep 11 17:01:38 EDT 2012 | derekj

I've been busy with a bunch of different projects lately, so I hadn't had a chance to tackle this further until recently. I ended up running through all your suggestions another time and low behold, it seems to have solved the issue. I'm currently no

Quad 4C part placement rejection

Electronics Forum | Tue Nov 15 14:01:00 EST 2011 | olddog

Well, everything WAS going OK until I started setting up for a board job (40 boards with about 450 components each - many image repeats). We setup 37 feeders with their parts and started defining the pickups and placements. Part #1 is an SOD123 zener

Increasing size tolerance to reduce component rejection

Electronics Forum | Mon Sep 26 18:53:30 EDT 2016 | chabscan

Could it be possible in my Quad 4c, to increase component size tolerance to reduce the rejection of components? Could this have an impact in the event of the machine picking a component off center? As in if the machine picks a compnent off center but

Increasing size tolerance to reduce component rejection

Electronics Forum | Tue Sep 27 11:43:32 EDT 2016 | tnisbet

Yes you can open the tolerance, and that’ll usually work for a bit. Is the LAE is linked to multiple parts? If so, then the easiest thing is to open the tolerance. If not, that’ll require another route to try. Is it happening to all of the components

Contamination of components

Electronics Forum | Mon Feb 26 09:35:48 EST 2001 | larryk

With allocation of components becoming a bigger and bigger problem, our company has had to purchase components from brokers. Because of this, I've found an increase of component contamination. What I mean is I have found problems with oxidation of th

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