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Help with part creation in Eagle CAD

e14 Contributor

Can someone create a component layout for a Panasonic Snap in Capacitor 4 pin style. An example would be ECE-T1JP123EA. I cannot seem to figure out how to layout the two dummy pins based on the degrees in the component data sheet. Would appreciate an experiance Eagle user to provide one for me. Thank you.

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    Hi,

     

    I'm not sure on the manner to specify a vector in EAGLE, but this method works:

     

    According to the datasheet, the diameter is 22.5 so the radius is 11.25mm

     

    The angle is 30 degrees:

    cos(30) is 0.866

    sin(30) is 0.5

     

    We need the X and Y co-ordinates (i.e. cartesian), let's take them from the origin.

    x is cos(30)*radius

    = 0.866*11.25

    = 9.74mm

     

    y is sin(30)*radius

    = 0.5*11.25

    = 5.625mm

     

    So, you'd draw a hole at (9.74 5.625) and the other one at (-9.74 5.625).

     

    You'd do a similar thing for any other angle.

     

    I have a C code routine saved up to help me, if I'm doing this many times. Probably a calculator with formulae

    is just as useful : )

     

    void

    vect_to_cart(double angle, double length, double *x, double *y)

    {

      double nx, ny;

      ny=0-cos(angle); nx=sin(angle);

      ny=ny*length; nx=nx*length;

     

    *y=ny; *x=nx;

     

    }

Reply
  • 0

    Hi,

     

    I'm not sure on the manner to specify a vector in EAGLE, but this method works:

     

    According to the datasheet, the diameter is 22.5 so the radius is 11.25mm

     

    The angle is 30 degrees:

    cos(30) is 0.866

    sin(30) is 0.5

     

    We need the X and Y co-ordinates (i.e. cartesian), let's take them from the origin.

    x is cos(30)*radius

    = 0.866*11.25

    = 9.74mm

     

    y is sin(30)*radius

    = 0.5*11.25

    = 5.625mm

     

    So, you'd draw a hole at (9.74 5.625) and the other one at (-9.74 5.625).

     

    You'd do a similar thing for any other angle.

     

    I have a C code routine saved up to help me, if I'm doing this many times. Probably a calculator with formulae

    is just as useful : )

     

    void

    vect_to_cart(double angle, double length, double *x, double *y)

    {

      double nx, ny;

      ny=0-cos(angle); nx=sin(angle);

      ny=ny*length; nx=nx*length;

     

    *y=ny; *x=nx;

     

    }

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