How can I create a custom SMD pad in Eagle like the one in the image I
attached?
Jay Beritz wrote:
How can I create a custom SMD pad in Eagle like the one in the image I attached? ------------------------------------------------------------------------
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Doesn't someone know how to do this? Please help
How can I create a custom SMD pad in Eagle like the one in the imageI attached? ------------------------------------------------------------------------
How can I create a custom SMD pad in Eagle like the one in the image
I attached?
I'm afraid you're not getting a response because there's no simple way to do
this. Eagle does not provide any facility for arbitrary shapes of SMD pads.
You could draw a polygon, but Eagle does not really support the use of
polygons in library parts, so this will involve a great deal of trouble.
If you want an SMD with one end flat and the other rounded, you could lay
two short SMD pads on top of each other, one rectangular and one rounded.
This will give you endless DRC errors, but could give you the SMD pad shape
you want.
Do you really need this appearance of SMD pad? What's wrong with rounding
both ends, or just keeping both ends square?
--
Bert Menkveld
Bert Menkveld wrote:
I'm afraid you're not getting a response because there's no simple way to do this. Eagle does not provide any facility for arbitrary shapes of SMD pads. You could draw a polygon, but Eagle does not really support the use of polygons in library parts, so this will involve a great deal of trouble. If you want an SMD with one end flat and the other rounded, you could lay two short SMD pads on top of each other, one rectangular and one rounded. This will give you endless DRC errors, but could give you the SMD pad shape you want. Do you really need this appearance of SMD pad? What's wrong with rounding both ends, or just keeping both ends square? --Bert Menkveld
I assumed the IC's pads and the traces on the board must match.
If the trace on the board is touching an area on the IC that is not a
pad won't this heat up the chip or cause other problems?
How can I create a custom SMD pad in Eagle like the one in theimage I attached? ------------------------------------------------------------------------
How can I create a custom SMD pad in Eagle like the one in the
image I attached?
I'm afraid you're not getting a response because there's no simpleway to do this. Eagle does not provide any facility for arbitraryshapes of SMD pads. You could draw a polygon, but Eagle does notreally support the use of polygons in library parts, so this willinvolve a great deal of trouble. If you want an SMD with one end flat and the other rounded, youcould lay two short SMD pads on top of each other, one rectangularand one rounded. This will give you endless DRC errors, but couldgive you the SMD pad shape you want. Do you really need this appearance of SMD pad? What's wrong withrounding both ends, or just keeping both ends square? --Bert Menkveld
I'm afraid you're not getting a response because there's no simple
way to do this. Eagle does not provide any facility for arbitrary
shapes of SMD pads. You could draw a polygon, but Eagle does not
really support the use of polygons in library parts, so this will
involve a great deal of trouble. If you want an SMD with one end flat and
the other rounded, you
could lay two short SMD pads on top of each other, one rectangular
and one rounded. This will give you endless DRC errors, but could
give you the SMD pad shape you want.
Do you really need this appearance of SMD pad? What's wrong with
rounding both ends, or just keeping both ends square?
I assumed the IC's pads and the traces on the board must match.If the trace on the board is touching an area on the IC that is not apad won't this heat up the chip or cause other problems?
If you look at the SMD IC package, you'll see that is has metal leads that
are bent down to provide a small length of lead that sits on the pad on the
board. The rest of the IC package is plastic (non-conductive), and normally
doesn't even touch the board. You can therefore run traces from the pad
underneath the package without any problems. The pads themselves can have
square or rounded corners, as different designers and different assembly
procedures may prefer, but for DIY assembly, I don't think it matters.
Take a look at some of the standard SMD footprints in the Eagle libraries to
see how foorprints are typically done.
