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 Jul 18 13:11:56 EDT 2002 | gdstanton
Steve, We are touching up 6 - 12% of all solder joints processed. We consider the solder joint to be the focal point of the SMT process. Therefore our metric is based on it. For example in a given month we... 1. Assembled 25pcs of 'A' (IPC-A-610/J
Electronics Forum | Wed Apr 07 11:53:59 EDT 1999 | Dave F
| Could somebody send me some information about the SMT Beginning? | I mean, when, where, why, SMT starts. | | Thank you, | | Roberto. | Roberto: There�s lots of reasons for getting into SMT. Some of which follow: 1 Manufacturing engineers thi
Electronics Forum | Wed Apr 07 12:54:13 EDT 1999 | Roberto Cardozo
| | Could somebody send me some information about the SMT Beginning? | | I mean, when, where, why, SMT starts. | | | | Thank you, | | | | Roberto. | | | Roberto: There�s lots of reasons for getting into SMT. Some of which follow: | | 1 Manufac
Electronics Forum | Wed Aug 08 21:24:52 EDT 2001 | davef
First, not that it�s bad, but SM-782, the land pattern standard is a pretty far distance from a DFM check list. Now, if you�d said D-275 er more properly 222X, ama be twitchin� less. Second, your process should include two distinct elements: 1 Data
Electronics Forum | Fri Sep 13 09:16:36 EDT 2002 | bmulcahy
Hi dave, Only back in the forum today to see your query so here goes (1) VIA ,PTH holes -- we found that because the amount of gold being plated is generally less that the amount of HASL that holes can be physically wider. This then (pacticularly o
Electronics Forum | Mon Jan 15 14:25:54 EST 2001 | davef
Let me make several points on this issue � POINT 1: Let�s be basic � Soldering and welding are examples of process that the quality types call "special processes". Special process. The results of special processes cannot be verified fully by subs
Electronics Forum | Wed Jul 22 12:47:23 EDT 1998 | Earl Moon
| I'm trying to put together a set of design guides for use for new designers | in house or to be sent out for contracted layout work. I would like to start with a top ten list of things that will go wrong if rules aren't available. For example testp
Electronics Forum | Thu May 10 16:17:59 EDT 2001 | davef
I am unaware of any industry standard for specifying apertures for SM stencils. I am aware of IPC-7525, Stencil Design Guidelines. You can obtain it from IPC [http://www.ipc.org]. Further, it seems like there is an article on stencil design ever
Electronics Forum | Tue Jan 11 09:47:01 EST 2000 | Dave F
Abbas: Sources of information on DFM/DFT are: � "SMTnet Express" articles on DFM by Earl Moon � IPC-D-279, 'Design Guidelines for Reliable Surface Mount Technology Printed Board Assemblies' � Books in SMTnet and SMTA book stores � Other examples ar
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