Electronics Forum: cfm (Page 2631 of 7890)

SMD ASSEMBLY & TEST EBOOKS NEEDED

Electronics Forum | Thu May 29 10:20:54 EDT 2008 | samir

There is no actual book on HOW to program equipment. The books that Bob mentions all deal with the theory of SMT, and doesn't go into the nuts and bolts of how to program a machine.

Mixed SAC105 and SAC305

Electronics Forum | Thu May 29 13:12:10 EDT 2008 | yam6rider

Just like to know what you guys thoughts regarding mixed alloys. Production run SAC305 and some components are SAC105. So, which profile should you follow. SAC105? or SAC305.

Mixed SAC105 and SAC305

Electronics Forum | Wed Jul 02 08:30:32 EDT 2008 | interflux_electronics

Why not follow SAC305? you would do so for any other component finish wouldn't you? A component finish of pure Sn would also not call for a pure Sn profile, would it?

0402

Electronics Forum | Thu May 29 15:00:49 EDT 2008 | slthomas

We've found that reverse homeplate reduces tombstoning significantly for us on 0603 and 0402 (the latter of which we hardly ever see).

CP6-4000 nozzle centering errors?

Electronics Forum | Fri May 30 09:50:04 EDT 2008 | jdengler

Another sticky issue is that if you use after market nozzles especially mixed in with Fuji nozzles the Anti-Marking Illumination Disks can be different enough that the vision system will reject nozzles. Jerry

CP6-4000 nozzle centering errors?

Electronics Forum | Fri May 30 09:53:19 EDT 2008 | cyber_wolf

"Another sticky issue is that if you use after market nozzles especially mixed in with Fuji nozzles the Anti-Marking Illumination Disks can be different enough that the vision system will reject nozzles. Jerry " Thats what I meant when I said they

CP6-4000 nozzle centering errors?

Electronics Forum | Fri May 30 10:18:34 EDT 2008 | jdengler

I've had some that under normal light they looked the same but when the UV light hit them they were very different.

CP6-4000 nozzle centering errors?

Electronics Forum | Fri May 30 11:58:16 EDT 2008 | fredc

The right paper incorrectly applied can be a problem also. I have seen it on even new Fuji nozzles with the illumination disk bunched up on one side of the tube with a gap on the opposite side.

CP6-4000 nozzle centering errors? PRoblem solved!

Electronics Forum | Fri May 30 15:07:16 EDT 2008 | rodrigo

Thank to all for the help. The problem was the reflective disk. They're all green now. Thanks again. I got another error but I'll start a new thread because it is not related to the disks.

How can a sound file be played out at 100dB and 21-40 kHz only?

Electronics Forum | Tue Jun 03 22:51:51 EDT 2008 | davef

Your circuit would consist of: * White noise generator * ~30Khz bandpass filter * Amplifier * Power supply You can find modules for these functions on the web. Good luck.


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