What resistor packages would I use for a standard 1/4 and 1/2 w resistor?
Thanks
What resistor packages would I use for a standard 1/4 and 1/2 w resistor?
Thanks
Ron Owens schreef:
Jim Littlefield wrote:
Steve Jacobson wrote:
What resistor packages would I use for a standard 1/4 and 1/2 w
resistor?
Thanks
I assume you mean SMT? There are a lot of standard sizes. I think
you can get 1/4W in 0805 and up. 1/2W generally requires 1206 or
larger. Footprints for these parts should be in the standard library
(rcl.lib?) Some current sense resistors have not so standard
footprints so you may have to create a library part.
jiml
For through hole parts you may have to make your own. I couldn't find
any in the standard libraries that come with Eagle. I recommend you
create them in the resistor library.
All the resistors, capacitors and inductors are in the rcl.lib.
If you make your own parts i would strongly recommend also making your
own library file that holds such parts. That way you won't lose your
additions after an Eagle update. you could use use the 'original' Eagle
name and prefix this with you initials: jl_rcl.lib for instance. It's
easier than having to make up your own library names. A seperate
directory for those lib files ie. a subdir under 'My doucuments'
(windows) makes it easier to backup. You can add the extra paths in the
Control Panel > Options > Directories.
HTH
Richard Herman
Ron Owens schreef:
Jim Littlefield wrote:
Steve Jacobson wrote:
What resistor packages would I use for a standard 1/4 and 1/2 w
resistor?
Thanks
I assume you mean SMT? There are a lot of standard sizes. I think
you can get 1/4W in 0805 and up. 1/2W generally requires 1206 or
larger. Footprints for these parts should be in the standard library
(rcl.lib?) Some current sense resistors have not so standard
footprints so you may have to create a library part.
jiml
For through hole parts you may have to make your own. I couldn't find
any in the standard libraries that come with Eagle. I recommend you
create them in the resistor library.
All the resistors, capacitors and inductors are in the rcl.lib.
If you make your own parts i would strongly recommend also making your
own library file that holds such parts. That way you won't lose your
additions after an Eagle update. you could use use the 'original' Eagle
name and prefix this with you initials: jl_rcl.lib for instance. It's
easier than having to make up your own library names. A seperate
directory for those lib files ie. a subdir under 'My doucuments'
(windows) makes it easier to backup. You can add the extra paths in the
Control Panel > Options > Directories.
HTH
Richard Herman