Electronics Forum: what (Page 665 of 1843)

Flexible Circuit Board Finish ENIG or Hard Gold?

Electronics Forum | Thu Aug 25 17:29:14 EDT 2016 | shawn_halo_1

Right, but these contacts have up to 36V running through it 20 minutes at a time unlike your wedding ring when you are swimming. If you take a look at the picture I posted in the last comment, that is what we are seeing over the course of use.

Flexible Circuit Board Finish ENIG or Hard Gold?

Electronics Forum | Thu Aug 25 18:14:10 EDT 2016 | davef

Shawn ... I believe you. I believe what you're saying. I don't believe that you received the metals that you ordered. From the way it looks I'd guess that you have no nickel and that you're seeing copper corrosion.

Air Volume / Quality requirements for Yamaha YS100 and YVL88 Machines?

Electronics Forum | Tue Oct 04 23:36:47 EDT 2016 | mrpackethead

How big an air compressor is needed to run Some Yamaha YS100 machines? What kind of air quality is required.

black fiducials

Electronics Forum | Wed Oct 12 11:02:59 EDT 2016 | hken

I think stencil manufacturers back fill half etched fiducials with black epoxy or something. I know I've had some worn and that's what I've done for my vision systems to be happy again.

black fiducials

Electronics Forum | Thu Oct 20 05:56:56 EDT 2016 | fadzril

Basically, what is the main issue which requires you to use black fiducials? Stencil mark recognition issues? Solder printer machines have ability to adjust the brightness or contrast.

Component Manufacturers Barcode

Electronics Forum | Mon Nov 07 15:08:07 EST 2016 | hken

That's fine for Toshiba but what do you do for other Mfg's with different formats? And how do you resolve the 255 character input limit in Access for Mfg's with more characters in the barcode string like Vishay?

Nozzle to camera calibration

Electronics Forum | Wed Oct 12 12:54:27 EDT 2016 | toddm

I need to do a camera to nozzle calibration on a Quad IVc. I was told to use silly putty. I now need to know step by step what to do.

MACHINE MISSES MANY COMPONENTS

Electronics Forum | Mon Oct 24 18:54:04 EDT 2016 | mnorthey

That's what I was trying to say was the E-pass can cause that problem; it's been a while since we had those. Hope you got it figured out.

Poor Wetting On The BGA.

Electronics Forum | Fri Oct 21 12:22:56 EDT 2016 | horchak

Looking at your picture I'm not sure you have a wetting problem. Who determined it's not wetted? Are you having functional failures? Is this an isolated incident? What was your TAL? Is the pad on the suspect ball possibly smaller than the others, or

Samsung SM421

Electronics Forum | Wed Dec 14 16:27:02 EST 2016 | warwolf

No sorry, I havnt seen anything like that. What is the package size/ball size/ or the ball pitch? I can have a look and see if I can get it to work on these machines? I'm pretty sure they will cope fine though.


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