SX3, formerly known as Super3 (Catalan pronunciation: [ˌsupəɾˈtɾɛs]) is a Catalan public television channel owned by Televisió de Catalunya in Catalan language. It started broadcasting on 10th October 2022. The channel's programs are aimed at children and teenagers. It is based on the programme Club Super3, that started on 11 February 1991 on TV3 and has been seen on El 33 and on K3.
In contrast to K3, which broadcast children and youth programming, SX3 airs series aimed at an audience younger than 14 years. A mix of live-action originals and animated series from a wide variety of countries, including Japan, are aired, all in the Catalan language.
The schedule is differentiated by specific blocks: S3, X3 and X3+.
SX3 broadcasts from 6 am to 9:30 pm, sharing the channel frequency El 33 for cultural and alternative programming. It replaced K3 and Super 3.
SX3's fan club has more than 1.5 million members.