Electronics Forum | Thu May 29 14:35:37 EDT 2008 | rdmundo
Gents, We've been using a round 1:1 aperture for a 5 mils thickness on our stencil design on 0402 and recently, IPC guidelines recommend oblong, homeplate or reverse homeplate. I believed the PCB pad for 0402's area within the recommended size/dimen
Electronics Forum | Tue Apr 06 09:42:08 EDT 1999 | Justin Medernach
| Hi, | Somebody know how to calculate the size of pads for different IC's: QFP's, SOIC, SOJ, etc. | | any help is apreciated. | | thanks | | AC | Hi AC, Recommended pad geometries come with component specs. Your circuit will be comprised of giv
Electronics Forum | Thu Feb 24 11:02:29 EST 2000 | mark scheunemann
I am looking to discuss 0402 issues, specifically tombstoning/unsoldered. Any recommendations on pad size/spacing, stencil design etc would be helpful. Placement and reflow profile look good.
Electronics Forum | Thu Feb 24 11:02:29 EST 2000 | mark scheunemann
I am looking to discuss 0402 issues, specifically tombstoning/unsoldered. Any recommendations on pad size/spacing, stencil design etc would be helpful. Placement and reflow profile look good.
Electronics Forum | Thu Apr 11 14:31:15 EDT 2002 | aaelect
We're having some problems with 0402's tombstoning. On a board with about 300 parts we're getting about 12 to 20 tombstones per board. The caps seem to do it more often than the res. The pads appear to be in accordance with IPC SM 782 amendment 1, S
Electronics Forum | Tue Jun 02 15:01:57 EDT 2015 | tombstonesmt
What is the reduction in aperture size for your stencil versus pad? Or are they at 100%?
Electronics Forum | Wed Sep 22 22:56:44 EDT 2004 | davef
Talk to 10 people and you get 10 recommendations for pad layout. So far, here's number 3 [after IPC and AVX]. We suggest: * Use the IPC recommended standard. * Change from that standard when someone gives you a documented reason to change.
Electronics Forum | Thu Apr 11 20:35:22 EDT 2002 | davef
Messy. Messy. Messy. Consider gluing these components, until you control your process. It is unclear to us that a single factor drives these defects, but multiple factors that need to be tuned to work well together. PAD DIMENSIONS * Some SM-782 pa
Electronics Forum | Wed May 09 17:26:57 EDT 2001 | davef
Awww, don beso tuff on ursef!!! It sounds like you�re thinking correctly with what you�ve done, but it�s possible that the test you ran did not represent your actual production environment as well as you would have liked. So, you just need to "cran
Electronics Forum | Thu Apr 02 21:25:16 EDT 2009 | davef
On Orbel E-Z SHIELD, Surface mount two-piece fence and cover: Make the pads 1:1 with the pads on the fence. On Autosplice MINI 7-V2004-115 RFI Clip floating: * Autosplice recommended pad small dimension is very close to the small dimension of the pa
