Electronics Forum: pad and design (Page 1 of 169)

Component pad design and volume requirements

Electronics Forum | Tue Feb 15 14:35:41 EST 2000 | Balas

hi I am designing a test vehicle with a range of components on it(pbga, cbga,fc, mbga, and qfps). My concern is that I would like to use a single stencil for solder deposition and not a stepped stencil. That would require me to have aperture design a

0402 pad and stencil aperture design

Electronics Forum | Thu Oct 30 15:07:40 EDT 2008 | jemills

Hello I have a new 0402 pad design on a recent board were building in future. On closer look i thought the pad was a thru hole mount , but upon closer inspection the round pads are for 0402 comps. I had a discussion with the engineer and he said

0402 pad and stencil aperture design

Electronics Forum | Thu Oct 30 22:29:58 EDT 2008 | davef

For most applications, a nice square [or rectangle] pad works just fine. Assemblers ship boat loads of boards with these every day. It's reasonable for tight decoupling capacitor requirement applications to use round or radiused pads for components

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/

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

BGA pad design

Electronics Forum | Wed Jan 27 04:01:46 EST 2016 | slouis2014

Thanks alot for the info

0306 pad design

Electronics Forum | Fri Dec 20 09:01:27 EST 2002 | russ

Greetings, Does anybody out there have any experience with 0306 capacitors (not 0603). I am trying to find a pad design for this component. I have searched the archives to no avail. The component is .06 long by .03 wide with .007" solder terminat

uBGA PCB design and stencil design

Electronics Forum | Mon Oct 21 23:48:13 EDT 2002 | harris

Hi: If anyone have the experience with the PCB pad design and stencil design for the uBGA? We meet the problem for it. The component data is 0.3mm diameter and 0.5 pitch. Could anyone tell me the PCB pad dimension, the stencil type and aperture dimes

BGA pad design

Electronics Forum | Fri Nov 27 00:36:02 EST 2015 | slouis2014

I just encountered a BGA design were in, underneath the BGA is a silkscreen that covered the entire bottom of the component except for the copper pads. Can you give any information and advice for this type of design.

0306 pad design

Electronics Forum | Fri Dec 20 12:12:12 EST 2002 | russ

Thanks Dave, I was looking in the Murata data base and couldn't even find the part (Even though they are the ones making it)let alone the pad dims. This part looks like it could be fun anyway. Russ

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