1 of 1 people found this helpful
TO220 is the packaging. This is a through-hole packaging. https://en.wikipedia.org/wiki/TO-220
If you are looking for breadboard friendly one then go ahead with this.
Same IC is available in SOT and TO-252 package.(These are surface mount packages )
Annotation of an IC also includes abbreviations for bulk packaging (reel or cut tape), The manufacture ID etc.
Check the listing here:
Datasheet of the IC will contain all the information regarding the marking. Check the last few pages of the datasheet.