Where did you find the footprint specifications for the various resistors, capacitors and inductors? Please send the URL's.
It seems like a potential area of confusion if a z-dimension is implied in the prefix but the x and y dimension is explicitly defined. Like you said if one vendor changes their z dimension for a particular footprint area or if one vendor makes multiple z dimensions for the same footprint area. Maybe the footprint name should have a z dimension in the body specification. (* jcl *) On 9/6/05, Dan McMahill <[EMAIL PROTECTED]> wrote: > John Luciani wrote: > > Thanks for the reply. > > > > After reading the second point (again) I think it needs to be > > clarified. The point I wanted to make is that footprint names that > > contain only an industry standard body size specification (0805, 0603, > > etc.) are not used. > > > > The footprint names for chip resistors, chip capacitors and chip > > inductors would be: > > > > resistor footprint = RESC + body size specification > > capacitor footprint = CAPC + body size specification > > inductor footprint = INDC + body size specification > > > > Three different footprint names for the same body size specification. > > > > I will rewrite the second point when I update the document. > > > ah, but if you look carefully, for example at CAPC1005M, INDC1005M, and > RESC1005M, you'll see that the footprints are slightly different. I > think this is because the z-dimension is different on these packages > even though they have the same x and y dimension. Of course, I still > think things become messy if different vendors or even different series > from the same vendor have a different z-dimension. > > > > > On 9/6/05, Dan McMahill <[EMAIL PROTECTED]> wrote: > > > >>John Luciani wrote: > >> > >>> I have placed a first draft of my land pattern naming convention at > >>>http://www.luciani.org > >>>The naming convention is based on IPC-7351. > >>> > >>>Please send questions, comments, observations either to the list or to > >>>(jluciani) *AT* gmail.com > >>>(as appropriate). > >>> > >>>(* jcl *) > >>> > >> > >>sorry for the extremely slow reply John. In your document, the 2nd > >>issue you mention about IPC-7351 is that for things like 0603 packages, > >>they embed capacitor/resistor/etc into the name. That's done, I > >>believe, because of the differing heights of those components. > >> > >>-Dan > >> > > > >> > > > >
