Does this model exist somewhere?
It doesn’t look like it. A google search for “fritzing part PIC 12F683” doesn’t turn up a part. However it is easy enough to create one by using the generic IC like this:
first drag the generic IC in to the sketch because you can only make changes on a part in a sketch.
then edit the pin labels
and add the pin names from the data sheet
then click save to save the labels and change the part number in Inspector
and you have a new part. If you right click on the part you can save it in the mine parts bin (and right click on it there and select “export part” to write its .fzpz file to the file system as a backup.) to allow later use.
Peter
Made the part as described, Thanks!