Norrköping took advantage of the last chance to pinch a final place.
After losing 2-0 in matches to 2-2 against this season's newcomers Östersund, the guests could stand for a giant bang at victory.
But that did not happen.
Norrköping won the fifth and absolutely decisive semifinal with 103-75.
23-year-old dominated
Norrköping was lifted by 23-year-old Jaelyn Brown.
The American, born in California, accounted for a full 45 points in the victory and had scored 24 of the team's 48 points after two played periods.
Figures that speak for her dominance.
Taylor Murray, another giant in the match, stood for a "triple-double".
In other words, double digits in the three important categories of points, returns and assists (12,13,17)
The home team never released the command.
During large parts of the second half, they had a lead of 20 points and Norrköping eventually won 103-75.
The Swedish Championship finals start on Tuesday next week.
The reigning champions Luleå are waiting there, and for Norrköping it will be their first final in eight years.
CLIP: Reigning champions ready for new Swedish Championship final - superior in the Norrland derby (April 8)
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The reigning champion ready for a new Swedish Championship final - superior in the Norrland derby Photo: Bildbyrån