Electronics Forum | Fri Aug 21 09:36:50 EDT 2015 | esoderberg
Looking for better design information than is contained in IPC 7525A. Specifically the minimum trough width and length of the step to achieve the necessary paste reduction.
Electronics Forum | Tue Aug 09 10:46:43 EDT 2016 | emeto
this really depends on the pad sizes. You can see 15 different pad sizes for the same component package. Take a look in IPC 7525. I am attaching an article as well, so you can get an idea.
Electronics Forum | Wed Jul 24 17:25:01 EDT 2019 | davef
Your solder stencil design should follow all basic rules for solder stencil design are followed in accordance with IPC-7525 including adherence to an area ratio of 2:3 or greater and an aspect ratio of 1.5 or greater.
Electronics Forum | Fri Jun 19 07:49:03 EDT 2020 | alanyang
Hope it's helpful for this stencil design.https://pcbboardassembly.com/how-to-understand-ipc-7525a-stencil-design-guidelines/
Electronics Forum | Tue Nov 21 15:49:01 EST 2000 | CAL
Dave- this may not be much current help but for future needs: IPC-7525 Stencil Design Guidelines is due out real soon. Check with IPC on its status, last I heard it was in interim Final.What is nice about this Doccument is that it also covers Pin_Thr
Electronics Forum | Thu Apr 12 09:50:51 EDT 2007 | pjc
There have been many designs of apertures for 0402, round, home plate, inverted home plate and various reduction amounts for square or rectangular apertures. What works best for a given application depends on PCB design, solder land finish, stencil t
Electronics Forum | Tue Jan 30 21:14:26 EST 2001 | davef
Suggestions are: * Limit pad width to 0.008" [0.2mm] * Use IPC-7525 Stencil Design Guidelines * Avoid Type 4 pastes, if you can * Slow down your print head to 0.63"/sec [16 mm/sec] * Consider the suggestions on printing by rpereira in the past
Electronics Forum | Tue Apr 03 13:27:58 EDT 2001 | mparker
go to http:\www.ipc.org. get the following standards: IPC-A-600F Also look at the IPC-6010 series, this may help with your design group. Finally, consider getting IPC-SM-782 and IPC-7525. These are for Surface Mount Design & Land Pattern Standards
Electronics Forum | Mon Dec 16 21:40:27 EST 2002 | grantp
Hi, Thanks for the info, and I will check it out. Do you know where the IPC 7525 spec is? Does it explain why square is better? I know there is some theory I am missing here, and that's why we have problems. I am just freaking out trying to establi
Electronics Forum | Mon Dec 12 16:08:37 EST 2005 | pjc
Here are some guidlines: http://www.tkb-4u.com/articles/printing/stencildesignguide/stencildesignguide.php www.indium.com/documents/applicationnotes/97742.pdf http://www.electronics.ca/standards/general/IPC-7525.html http://www.alphametals.com/pr
