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Newby question about components

autodeskguest

Please forgive this newbie question but it does not see to be addressed in

any FAQ.  I'm attempting to lay out  a simple board with the freeware

version and need to add quite ordinary components such as ceramic disk

capacitors, electrolytic capacitors and metal oxide resistors.  When I

search on those components, the list returns devices who's descriptions are

unknown to me.  Obviously, this is a program with a great deal of capacity.

Far more than I'll ever use but is there a simple answer as to what to

select when you just need to add a regular old 1K resistor or a 0.1 uF

capacitor?

 

Thanks.

Charlie Smith

 

 

 

Parents

  • On Sat, 9 Feb 2008 David Pollum wrote saying :

    Charlie Smith wrote:

    is there a simple answer as to what to  select when you just need to

    add a regular old 1K resistor or a 0.1 uF  capacitor?

    Thanks.

    Charlie Smith

    The RCL library contains commonly used resistors and capacitors.

     

    Eagle is a CAD program, not a circuit simulator, so it's not really

    interested in whether a capacitor is ceramic, polythene, or anything

    else. What it does care about is the physical package and the schematic

    symbol. For this reason the RCL library lists components with names like

    "R-EU_R0805". This means it's a resistor, shown on the schematic with

    the European symbol, and placed in the PCB as an 0805 surface mount

    package.

     

    To make it easier, the "add" dialog box from which you select the

    component displays both the schematic symbol and the PCB layout (with

    silkscreen) of the selected device, so you can check before adding

    whether it's what you want. And if you get it wrong, you can use

    "Change->Package" to select a different variant when you're laying out

    the PCB.

    --

    Rob Pearce                       http://www.bdt-home.demon.co.uk

     

    The contents of this | Windows NT crashed.

    message are purely   | I am the Blue Screen of Death.

    my opinion. Don't    | No one hears your screams.

    believe a word.      |

     

Reply

  • On Sat, 9 Feb 2008 David Pollum wrote saying :

    Charlie Smith wrote:

    is there a simple answer as to what to  select when you just need to

    add a regular old 1K resistor or a 0.1 uF  capacitor?

    Thanks.

    Charlie Smith

    The RCL library contains commonly used resistors and capacitors.

     

    Eagle is a CAD program, not a circuit simulator, so it's not really

    interested in whether a capacitor is ceramic, polythene, or anything

    else. What it does care about is the physical package and the schematic

    symbol. For this reason the RCL library lists components with names like

    "R-EU_R0805". This means it's a resistor, shown on the schematic with

    the European symbol, and placed in the PCB as an 0805 surface mount

    package.

     

    To make it easier, the "add" dialog box from which you select the

    component displays both the schematic symbol and the PCB layout (with

    silkscreen) of the selected device, so you can check before adding

    whether it's what you want. And if you get it wrong, you can use

    "Change->Package" to select a different variant when you're laying out

    the PCB.

    --

    Rob Pearce                       http://www.bdt-home.demon.co.uk

     

    The contents of this | Windows NT crashed.

    message are purely   | I am the Blue Screen of Death.

    my opinion. Don't    | No one hears your screams.

    believe a word.      |

     

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