Electronics Forum | Thu Nov 07 10:59:11 EST 2002 | pjc
IPC-7525 "Stencil Design Guidelines" is a good reference document to have. Here are notes from a Tessera, (a major mBGA mfg.), study- "Application Note Solder Stencil Requirement for mBGA" The stencil aperture is to be square, equal in size to the l
Electronics Forum | Wed Jun 24 18:44:14 EDT 2009 | mark_h
Hi Everyone My company has done loads of 0402 placements but are now required to start looking at 0201 and micro BGA placements. I’ve done loads of research and I’m happy with stencil design, area ratio, oven profile, machine requirements and paste r
Electronics Forum | Wed Sep 06 20:31:10 EDT 2000 | Dave F
Randy: My druthers on sources for SMT land patterns, in decreasing preference order are: 1 Manufacturers' recommendations. The problem with manfacturers' recommendations is that someone must make the effort to obtain them, document, and use them.
Electronics Forum | Fri Dec 15 11:23:23 EST 2000 | John
I searched the archives and couldn't find anything specific. Our designers would like me to wave solder an SO18 on an upcoming product. My IPC standards have land patterns, but no recommendation on wavesoldering. This is a higher pin count than we
Electronics Forum | Tue May 23 09:21:48 EDT 2000 | Brett W. Philipp
I am a PCB Designer / Mech. Engineer for a telecom company that has just started. What I would like, if possible is a reference copy of the SM-782A IPC spec. or some input on a way to calculate depending on the PLCC part dimensions, land pattern crea
Electronics Forum | Tue May 23 13:08:54 EDT 2000 | John Thorup
I second Wolfgang. Welcome, It's good to hear from someone who wants to design something we can build. Another useful resource is the land pattern book from SMT Plus www.smtplus.com 831/438-6116 Also useful are the component mechanicals available (fr
Electronics Forum | Mon Mar 20 20:22:47 EST 2000 | Dreamsniper
We used to have our PLCC,s, TSOP's and QFP's (0.65 mm pitch) Land Patterns designed in square corners. Some of our products have them designed in Full Radius Corners. As of now, with the two different designs running in our production floor, we can't
Electronics Forum | Thu Apr 09 00:07:54 EDT 1998 | Bonnie
I am in urgent need of a pcb land patten (footprint)for this device. I have the component data sheet with with package dimensions from Motorola, but they do not include the recommended land pattern. I requested a patten over a week ago, but have no
Electronics Forum | Thu Apr 09 00:12:02 EDT 1998 | Bonnie
| I am in urgent need of a pcb land patten (footprint)for this device. I have the component data sheet with with package dimensions from Motorola, but they do not include the recommended land pattern. I requested a patten over a week ago, but have
Electronics Forum | Sat Dec 15 10:01:59 EST 2001 | davef
USE OF XRAY Xray is not used for testing BGA. Xray is an inspection tool, similar to a microscope. Check the fine SMTnet OnBoard Forum. Gil Zwieg from Glennbrook made some good points. Additionally, search the fine SMTnet Archives, where there�s
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