Re: [PEDA] How to set component library properties in inner layers
At 01:29 AM 9/3/2003, Website Visitor wrote: I am currently doing a project on Embedded Passives. Does anyone know how do I define the component property so that I can place the comp in inner layer? As for now I could only place the comps on top or bottom side. Thanks. Posted from Association web site by: Aiza As Mr. Wilson wrote, Protel components are classified as Top and Bottom, no other choices. But, yes, you can place pads on inner layers. So you'd make a footprint that had its pads on whatever layer you desired. You could, I suppose, simply edit a component to move the pads to an inner layer (by unlocking the primitives for the footprint), but I'd recommend against it. Instead, make a footprint and give it a distinctive name, like "LAYER 3 CAP". You can also have assembly text and outlines on a mech layer dedicated -- and named -- to be your assembly layer for the layer containing the passives. Because the Pick and Place CAM output will give the footprint name, it will be easy to separate those parts out from the Pick and Place file to make a Pick and Place file just for the embedded passive layer (and keep them out of the file for the Top layer, assuming that this is what has been used for the layer assignment). * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/[EMAIL PROTECTED] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Re: [PEDA] How to set component library properties in inner layers
On 03:29 PM 3/09/2003, Website Visitor said: Hi, I am currently doing a project on Embedded Passives. Does anyone know how do I define the component property so that I can place the comp in inner layer? As for now I could only place the comps on top or bottom side. Thanks. I think this will prove to be difficult in Protel. Components can only exist on top and bottom layers. Assuming you are using both external component layers as well as wanting to use embedded passives, I can't see an easy solution. Maybe you could make up components that were labelled as being on the top layer for instance, but had tracks and pads on the inner layers - I hve never tried it but maybe it could work. You would have to set up specific components for each layer (or unlock component primitives and move the copper details to the required layer during routing.) You would also have to twiddle the placement info to pull the embedded stuff out of the outer layer placement info. Also, I am not sure how you would deal with component clearance DRC errors (you would probably have to check carefully manually and simply not run this DRC check). It is an issue that may need to be addressed by future CAD packages if embedded devices really catch on. Ian * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/[EMAIL PROTECTED] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
