Electronics Forum: check off pcb (Page 1 of 220)

Coplanarity check

Electronics Forum | Wed Apr 09 11:42:39 EDT 2003 | stefwitt

Ricardo, I can�t apply more then common sense to the function of the coplanarity system. If Fuji buys the system off the shelf, from Cyber Optics for example, then it is very likely that it has its own processor, programmed a way that the measuring r

Pressure check for SMT machine placement.

Electronics Forum | Mon Apr 12 04:56:54 EDT 2004 | qualitel

Hi Eric, Every mounter have a standard count and "release" off the component. The sample and cost saving way is to use the paper (e.g: 4mil,5mil...thick) to measure. Just place on the PCB with supoort base below and release the nozzle step by

electrical check PCB

Electronics Forum | Fri Jan 13 14:18:41 EST 2006 | mark

Hi, I would like to ask you how you test the PCB (electrical test) of first PCB before starting production.? What kind of equipment you are using? and method to confirm that components on PCB are correct (value, orientation, describtion, polarizatio

Design Rule check software

Electronics Forum | Fri Sep 11 01:06:28 EDT 2009 | boardhouse

Hi you can try fab3000 - down loadable off tucows. http://www.tucows.com/preview/513130 They say its free. Regards, Boardhouse I have no affiliation with Fab3000 or Tucows

electrical check PCB

Electronics Forum | Fri Jan 13 14:21:56 EST 2006 | chunks

We always have the board house do it. Why catch bad board for them? Don't let them push you around.

Depaneling tolerace check

Electronics Forum | Fri Jul 30 11:32:31 EDT 2004 | westred

I am looking for a fool-proof way to have operators measure PCB's out of the depaneler to ensure that the tolerances for the outside edges are being met. Probably a spot check system to make sure the process is in tolerance. So far building a "GO"

electrical check PCB

Electronics Forum | Fri Jan 13 15:55:07 EST 2006 | DannyJ

Hi Mark, I'm guessing from your letter that you are not asking about traces, just component values. We use a tool called 'smart tweezers' (catchy, eh?) to do jsut what you are asking. Very easy for our QA department to use a BOM to compare agains

parts popping off during reflow

Electronics Forum | Fri Sep 28 09:30:07 EDT 2001 | kmorris

Just had a similar phenomenon 2 days ago. May relate to your issue --- or not. Like you, I did a once over looking for mechanical obstruction & couldn't find any. Ran a thermal profile on the offending PCB & all checked out. Looked in end of oven

BGA dropping off the board

Electronics Forum | Fri Feb 15 06:21:34 EST 2008 | marjorie

Thanks for the comments and advice. The rest of the components have good solderability except for the BGA that fell off. Our production is high mix low volume so the quantity was very small. I'll check the pcb lands next time I run. It could be a con

BGA dropping off the board

Electronics Forum | Mon Feb 18 02:08:06 EST 2008 | lococost

4 days seems a lot. You could be losing flux activation causing poor wetting on the enig. Check your suppliers data sheets for paste life. If it was contamination on the PCB, you'ld expect other components to solder badly as well. Try using a bra

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