Electronics Forum: board (Page 636 of 1565)

SMD flatness standard

Electronics Forum | Sat Nov 18 08:42:11 EST 2006 | davef

Bow & twist: IPC-A-600. Acceptability of Printed Boards 1.5%; Goal 0.005" per inch; Practicle 0.007" per inch

Chinese Wave Solder Machines

Electronics Forum | Tue Nov 21 13:34:04 EST 2006 | billwestiet

I've been doing this for a year and a half, and that is the best one I have heard. LOL. By the way, in my experience, the boards have stayed soldered. Whenever I am in China though, I am alwasy hungry...

ENIG or flash?

Electronics Forum | Mon Nov 27 08:52:35 EST 2006 | russ

Never heard the term chemical gold before. I would recommend using industry standard tems first hehehe, what is the proces sfor these boards? I would hope that you are using ENIG if you are soldering to these baords by the way Russ

Flux residue cause high false reject at ICT

Electronics Forum | Wed Nov 29 09:54:05 EST 2006 | jhaviland

Washing these boards would be a great help. The flux will build up on the probes and possibly corrode them depending on it's composition. Aim for a process that will burn off the majority of the flux, or change chemistries if washing is not an opti

design rule checks

Electronics Forum | Wed Nov 29 12:10:07 EST 2006 | realchunks

We have a 70 page check we use. Just need to verify the board layout can be processed thru all required processes.

design rule checks

Electronics Forum | Thu Nov 30 05:08:40 EST 2006 | aj

5mm. 3.Check that there are fiducials. The above checks are purely for Processing the board thru the machines. There are lots of other checks for stencil design etc. aj...

Ok gurus got a question?

Electronics Forum | Thu Nov 30 11:32:07 EST 2006 | fastek

I have the feeling FishingFool's situation or dilemma is not a PCB Assembly related application......or at least it's not a component placement related application with auto board loading and fiducial recognition. That would be too easy to figure out

Solderbridges wave soldering

Electronics Forum | Fri Dec 01 03:23:50 EST 2006 | Joris Groot Koerkamp

For better quality in our wave solder process i want to start with an improvement project (to eliminate solderbridges). Does somebody know what are reachable ppm rates for solderbridges in a wave soldering process? The boards are simple. Only some

IP1 Relay PCB, where is it???

Electronics Forum | Wed Dec 06 11:00:30 EST 2006 | jdengler

All of the IP-1's I have seen use a fixed feeder bank. No MFU's which is where the board is located for IP-II's. Jerry

ENIG-BLACK PAD!!!!

Electronics Forum | Fri Dec 08 18:59:59 EST 2006 | Jack

Re-address the link... http://www.smta.org/files/SMTAI01-Jay.pdf Look at the last page about bare board reparing..


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