Spain and the Netherlands are set for 30 minutes of extra time, having reached the end of 90 minutes drawn 0-0.
Arjen Robben had two breakaway chances for the Dutch, both snuffed-out by Iker Casillas.
Spain's best chances came from Sergio Ramos (header over the bar), David Villa (blocked from three yards out), and Joan Capdevila (missed the ball on a far-post attempt off a corner kick).
The second half started by continuing the yellow card theme of the first half, with Giovanni van Bronckhorst and John Heitinga picking up the Dutch's fifth and sixth cautions, Capdevila earning Spain's third. Although Robben would earn a card for dissent in the 86th minute, the match calmed-down half-way through the period.
Spain held 63 percent of the possession in the first half, though they were out-shot by the Dutch 4-2 (shots on goal).
It is the second consecutive final to go to extra time, with France and Italy ending 1-1 at Germany 2006.