PCB Info : Difficulty Ratings
1 : Very simple, no SMT parts.
2 : Simple , few SMT parts, otherwise at least 805 or 1206 footprint
3 : Advanced, more SMT parts, passive components in 805 or 1206, Active components in narrow formats.
4 : Challenging , many passive SMT components, whether or not in 506, Active components in narrow formats.
5 : It is not in the range.
