Smith was placed on waivers Thursday, Elliotte Friedman of Sportsnet reports.
Smith signed a one-year, $775,000 contract with Pittsburgh on Saturday.
Smith was reassigned to AHL Wilkes-Barre/Scranton on Wednesday.
Smith recorded an assist in Wednesday's 5-4 defeat to Ottawa.
Smith contributed four shots and four hits during a 4-2 defeat to the visiting Devils on Friday.
Smith was called up from the minors Wednesday.
Smith was reassigned to AHL Wilkes-Barre/Scranton on Sunday.
Smith (undisclosed) was on Team 1 for Thursday's intrasquad scrimmage, Matt Vensel of the Pittsburgh Post-Gazette reports.
The Devils traded Smith (undisclosed) and a 2023 third-round pick to the Penguins in exchange for John Marino on Saturday, PuckPedia reports.
Smith (undisclosed) will not play Friday against Detroit, Amanda Stein of the Devils' official site reports.