Set of small (about 10mm cubed) SMD transformers, marketed as flyback transformers.

Wurth Elektronik 750311692

DC resistance: $0.325\Omega$, 2x $8.70\Omega$

winding ratio: 5 or 10 with both windings in series.

saturation: $550V\mu s$ or $1100V\mu s$ with both windings in series.

Wurth Elektronik 750342779

DC resistance: $0.36\Omega$, $0.345\Omega$, $0.410\Omega$

winding ratio: 1:1:1

saturation: $120V\mu s$ or $240V\mu s$ with both windings in series.