Voluntary worker Lloyd Miller was one of two 19-year-old supporters who went on to the playing area at Stanley's ground when Newcastle United scored just after half time on August 25.
Both he and David Collins, who did not cross the white line, have been spared banning orders by Hyndburn magistrates after admitting encroachment.
Newcastle United have already punished the duo by imposing a one-month home ban and an away ban for the rest of the season from September, Burnley Crown Court was told.
Miller, of Newcastle, and Collins of North Shields, were both of previous good character.
The judge said there was no suggestion the teenagers used or threatened violence.