Electronics Forum: agree (Page 36 of 167)

Acceptable per J-STD-001 and IPC-A-610 Class 3?

Electronics Forum | Thu May 23 18:10:54 EDT 2013 | davef

I agree with Rob. These solder connections are unacceptable. BR, davef

Acceptable per J-STD-001 and IPC-A-610 Class 3?

Electronics Forum | Thu May 23 18:40:48 EDT 2013 | rway

I also agree. Even if it did meet specs, I wouldn't let a joint like this out. Reese

Humidity & Temperature Range on SMT SHopfloor

Electronics Forum | Fri Aug 23 14:15:02 EDT 2013 | charliedci

I would think the two main issues would be: 1)humidity too low affecting static control issues. 2)humidity too high affecting moisture sensitive components. Otherwise I agree with Evtimov, whatever equipment/personnel can handle.

Paste printing fine pitch components

Electronics Forum | Mon Oct 14 14:11:39 EDT 2013 | island2013

Yes, I agree with Evtimov. It's more about aperature reduction and type than it is the type of machine. Aspect and and Area Ratio are very important. Take a look at this page I found on the internet http://www.qualiecocircuits.co.nz/stencil-techno

Concave Terminals Help. CP4 or GSM

Electronics Forum | Wed Nov 13 09:22:03 EST 2013 | swag

We run these all the time. Agree with other posts. I tried a few times to read leads on these with mixed results. Leadless is best. On GSM - run as leadless or chip and crank the lighting up on 2.6 or 4.0 ULC. You should get good centering.

PCBA storing requirement

Electronics Forum | Fri Dec 13 13:46:23 EST 2013 | markhoch

I agree with Dave. Much better to store as he suggested then to store them in piles on the floor. Ha! Piles of boards... never ceases to be funny.... :-p Funny though...my customers don't seem to find it as funny as I do. I wonder why....

stranded copper wire - tin or not tinned

Electronics Forum | Thu Jan 23 23:00:42 EST 2014 | davef

I agree with AFlex. Don't tin stranded wire that's assembled into a screw terminal block. I believe the reasoning has to do with avoiding stress on the wire metal caused by different expansion rates of the solder and the wire. BR davef

Solder past KOKI out of date. Can it be reviving

Electronics Forum | Mon Mar 24 11:52:43 EDT 2014 | davef

I agree with Jim. Don't do it!!! The tech from SparkFun [on the YouTube video] is giving you his hobbyist trick, which: * For hobby prototyping will work just fine. * For production work, the process is not in control and should not be considered.

BGA drop off from the boards

Electronics Forum | Fri May 23 11:14:15 EDT 2014 | rboguski

Agree with previous comment regarding possible head-in-pillow. Use 3D x-ray or CT-scan to verify.

Wrong Parts Loaded......again

Electronics Forum | Thu Oct 16 13:25:04 EDT 2014 | tombstonesmt

Evtimov, I agree. I'm leaning more towards the quality of worker rather than software, etc. Since this post this incident happened AGAIN! This time there was ZERO verification performed at start up.


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