Best capacitor library symbol for 80-C315C104M5U from polybot project?

"Warren Brayshaw" <warrenbrayshaw@paradise.net.nz> writes:

>Hi,

>I am playing with the polybot project which recommends using Eagle for

>developing  its  circuit  board.   The  project  using  Kemet  ceramic

>capacitors 80-C315C104M5U 0.1uF as decouple capacitors for the circuit

>board ICs.   The capacitor package type  is C315.  How  do I determine

>which Eagle  library capacitor symbol is  the best fit to  use for the

>capacitor?   The cap  has just  two wires  coming off  it  so probably

>anything reasonable would work, but is there a preferred selection?

 

 

To find something suitable in the libraries

 

From the Kemet data sheet:

The C315 package has the following characteristics:

Lead spacing 2.54mm (0.1")

Lead diameter 0.51mm (0.020")

Package width 3.81mm (0.15")

Package thickness Std Voltage 2.54mm (0.1") , High Voltage 3.18mm (0.15")

 

In the library rcl.lib select your capacitor symbol preference of either

C-EU or C-US

From the listed capacitors the ones that fit you size requirements have the

package C025-024X044

C025 = Capacitor with lead spacing of 2.5mm

024X044 = tPlace depiction of package size 2.5 x 4.4mm.  This is a suitable

match for the datasheet values of  2.54  x 3.18mm.

 

Opening the library, check the drill diameter of the pads. In my library its

0.032" which would suit the lead diameter of 0.020".

 

Hope this helps

Warren

 

Thanks very much for all the replies.  They are very helpful.  I think

I  understand how  you picked  out  the relevant  analogous part.   It

needed  three attributes  to match  the minimum  value or  be slightly

larger than the actual part specification.  I appreciate the pointers

and explanation.

Thank you.

marc

--

"Warren Brayshaw" <warrenbrayshaw@paradise.net.nz> writes:

>Hi,

>I am playing with the polybot project which recommends using Eagle for

>developing  its  circuit  board.   The  project  using  Kemet  ceramic

>capacitors 80-C315C104M5U 0.1uF as decouple capacitors for the circuit

>board ICs.   The capacitor package type  is C315.  How  do I determine

>which Eagle  library capacitor symbol is  the best fit to  use for the

>capacitor?   The cap  has just  two wires  coming off  it  so probably

>anything reasonable would work, but is there a preferred selection?

 

 

To find something suitable in the libraries

 

From the Kemet data sheet:

The C315 package has the following characteristics:

Lead spacing 2.54mm (0.1")

Lead diameter 0.51mm (0.020")

Package width 3.81mm (0.15")

Package thickness Std Voltage 2.54mm (0.1") , High Voltage 3.18mm (0.15")

 

In the library rcl.lib select your capacitor symbol preference of either

C-EU or C-US

From the listed capacitors the ones that fit you size requirements have the

package C025-024X044

C025 = Capacitor with lead spacing of 2.5mm

024X044 = tPlace depiction of package size 2.5 x 4.4mm.  This is a suitable

match for the datasheet values of  2.54  x 3.18mm.

 

Opening the library, check the drill diameter of the pads. In my library its

0.032" which would suit the lead diameter of 0.020".

 

Hope this helps

Warren

 

Thanks very much for all the replies.  They are very helpful.  I think

I  understand how  you picked  out  the relevant  analogous part.   It

needed  three attributes  to match  the minimum  value or  be slightly

larger than the actual part specification.  I appreciate the pointers

and explanation.

Thank you.

marc

--