Electronics Forum: 0402 and adjustment (Page 2 of 25)

0402 tombstoning and dewetting on QFP256 trade-off

Electronics Forum | Fri Mar 06 16:17:38 EST 2009 | aj

whats your board finish?

smt common pad 0402 and 1206 package

Electronics Forum | Fri May 06 08:39:59 EDT 2016 | kahrpr

The first issue I see is that you have a high potential of the 402 tombstoning.

Can CSM84V and CSM84VZ do 0402 ???

Electronics Forum | Wed Apr 12 15:43:31 EDT 2006 | ted nguyen

Does any one out there know if CSM84V and CSM84VZ can do 0402 parts ? If so, do they actually make 8mmx2mm feeders for these machines. I've had someone tell me they do, but i can't seem to find those feeders anywhere. thank you

Yes Tech F1 AOI and 0402 chips.

Electronics Forum | Fri Apr 01 14:51:23 EDT 2011 | jaimebc

We are currently experiencing a high rate of false calls on our 0402 chips. Resistors for the most part. Has anybody out there found a setting where this false calls are minimized? We are using top red light, pattern inspection,color inspection ( wh

Yes Tech F1 AOI and 0402 chips.

Electronics Forum | Fri Apr 01 18:32:51 EDT 2011 | frcdave

Dback, Some questions for you: 1. Are you using the red light configuration for better contrast on the 0402 parts? 2. Is your system fitted with both low and High Magnification cameras? Have you spoken with the guys at YESTech? Their phone support i

0402 pad and stencil aperture design

Electronics Forum | Fri Oct 31 07:52:23 EDT 2008 | davef

For a better understanding of decoupling capacitors, look here: * http://en.wikipedia.org/wiki/Decoupling_capacitor * http://www.hottconsultants.com/techtips/decoupling.html * http://pcdandf.com/cms/content/view/3410/95/

Yes Tech F1 AOI and 0402 chips.

Electronics Forum | Mon Apr 04 11:46:20 EDT 2011 | frcdave

I was thinking the same thing. Try turning off your anchors and look at the size of your search and % match you have set. if you are concerned about not catching missing components, try training a negative template.

smt common pad 0402 and 1206 package

Electronics Forum | Mon May 09 09:23:45 EDT 2016 | markhoch

I agree with the previous two replies. This is a perfect design....if you're trying to create a graveyard full of tombstones.

0402 pad and stencil aperture design

Electronics Forum | Thu Oct 30 15:36:18 EDT 2008 | grantp

Hi, Sounds like your engineer does not know what he's doing. We have developed and built hundreds of thousands of boards with normal square pads for 0402, and we just use a 5 thou stencil with 5% reduction and it works well. Decoupling? What is tha

0402 tombstoning and dewetting on QFP256 trade-off

Electronics Forum | Fri Mar 06 10:50:21 EST 2009 | fountain42

Just my opinion but it look's like your doing a great job. i would try another paste. I'm somewhat lucky that we get to use OA's. If your stuck using the no-cleans they are so tempermental. (The nitrogen is making up for the poor paste) Your de-wetti


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