Electronics Forum | Wed Jul 25 10:57:08 EDT 2007 | cecil
Our board layout folks are currently designing a PWB using a 132 QFN. The component is .5mm pitch with .35mm square pads. The component manufacturer recommends the following footprint: .4mm square land .3mm square solder resist 1.why do they spec
Electronics Forum | Mon Jul 30 11:08:23 EDT 2007 | swag
I have a new contract with boards that have straight edges and are good for v-score breakout panel design. However, many of the traces are very close to the edge of the board so I am concerned that the traces could be damaged when we run them throug
Electronics Forum | Thu Aug 16 19:59:42 EDT 2007 | davef
Hi Russ Here you go: * IPC-7351 - http://portal.ipc.org/Purchase/ProductDetail.aspx?Product_code=77b562c1-b8f8-db11-8a6a-005056875b22 * IPC-SM-782 - Surface Mount Design and Land Pattern Standard [Superseded by IPC-7351] * CM-770 - http://portal.i
Electronics Forum | Fri Aug 17 09:35:15 EDT 2007 | karenp
We usually do Solder reworks, and some components that cannot be installed by SMT Machines or Wave solder due to specs or the technology in our company... aur work methods and instruction are always based on designators and are more illustrated to ca
Electronics Forum | Fri Aug 24 14:15:24 EDT 2007 | clarkk
Ben, I'm not aware of any 'automatic' method to convert PTH footprints to SMT. Typically, many of the components are passives, and there may be a way in your CAD software to change the passives of a common size to a different footprint. That will co
Electronics Forum | Fri Aug 24 15:18:51 EDT 2007 | consultacionbc
Stephen, This is a board designed for medical apparatus and we're needing to change 3000 placements, it's about 2000 different parts. Some boards have about 90 parts and some have greater amount. Impedence of the board happens to be a great issue
Electronics Forum | Thu Sep 20 14:30:20 EDT 2007 | chef
I would appreciate any and all input on selection of ICT/ATE equipment. I'm a CM supplying various PCA's, none of which are designed with test points. I am looking for a robust, user friendly, low cost, low maintence that can be easily adapted for ea
Electronics Forum | Thu Oct 11 16:55:26 EDT 2007 | slthomas
Yeah, James, we've got block repeats set up so we're getting the boards built with just pcb fids, and very accurately. I want to be able to build with block fids, though, in case we have any issues with the panelization. It's happened in the past a
Electronics Forum | Fri Nov 23 15:46:06 EST 2007 | mika
Question: We have an issue right know on a prototype batch with via in the pad on an very small pcb 50x50mm (in a panel of course). The designer has no room to move the vias as they said. The pcb is to packed with components also 8-layers. It is also
Electronics Forum | Wed Nov 07 12:14:37 EST 2007 | jaimebc
Mydata users, is there a way to use Microsoft Excel to create pick and place programs? I have my centroid data with the following: 1st column: Reference designator 2nd column: part number 3rd colum: x 4th column:Y 5th column: theta Now,using Excel
