Project Description

ferrite U cores
Ferrite U cores with rectangular cross-sections, are easy to produce and are relatively inexpensive. For this reason, they are popular in low cost applications such as interference filters and output chokes in radio and TV equipment. There is no real optimization for transformer winding designs and the core is rather bulky. Large U cores like U93 and U100 are suitable for vary high throughput power. They can be stacked to form transformers, capable of handling several KW’s in applications such as industrial HF welding.

Summary:

  • Simple, economic shape
  • Can be stacked for high power
  • Bulky sizes
  • No self-shielding
TypeMaterialLef [mm] *Aef [mm2] *Vef [mm3] *AL [nH/turns2]Gap [µm]µeROHSSpecifications
I100/25/25-3C903C902456451580006700±25%ungapped≈2000YES
I100/25/25-3C90-/G63C902456451580006700±25%ungapped≈2000YES
I100/25/25-3C943C942456451580006700±25%ungapped≈2000YES
I25/6/6-3C903C9064.340.325901500±25%ungapped≈1900YES
I25/6/6-3C913C9164.340.325901900±25%ungapped≈2400YES
I25/6/6-3C943C94
64.340.325901540±25%ungapped≈1960YES
I93/28/16-3C903C902584471150004600±25%ungapped≈2100YES
I93/28/16-3C943C942584471150004600±25%ungapped≈2100YES
I93/28/30-3C903C90258840
217000
8700±25%ungapped≈2100YES
I93/28/30-3C943C942588402170008700±25%ungapped≈2100YES
U10/8/3-3C903C9038.38.07309420±25%ungapped≈1600YES
U10/8/3-3C943C9438.38.07309470±25%ungapped≈1800YES
U100/57/25-3C903C903086451990005500±25%ungapped≈2100YES
U100/57/25-3C943C943086451990005500±25%ungapped≈2100YES
U101/76/30-3C903C903718303080006100±25%ungapped≈2200
U120/80/20-3C903C90414600
2490004070±25%ungapped≈2200
U126/91/20-3C903C90480560268800
3300±25%ungapped≈2250YES
U126/91/20-3C943C94480560268800
3300±25%ungapped≈2250YES
U15/11/6-3C903C905232.316801400±25%ungapped≈1800YES
U15/11/6-3C943C945232.316801400±25%ungapped≈1800YES
U20/16/7-3C903C90685638001900±25%ungapped≈1800YES
U20/16/7-3C943C94685638001900±25%ungapped≈1800YES
U25/16/6-3C903C90
83.640.333801200±25%ungapped≈2000YES
U25/16/6-3C913C9183.640.333801400±25%ungapped≈2300YES
U25/16/6-3C943C9483.640.333801200±25%ungapped≈2000YES
U25/20/13-3C903C9088.21049180
2900±25%ungapped≈1960YES
U25/20/13-3C943C9488.210491802900±25%ungapped≈1960YES
U30/25/16-3C903C90111161179003300±25%ungapped≈1800YES
U30/25/16-3C943C94111161179003700±25%ungapped≈2000YES
U46/40/28-3C903C90182
39271300
6000±25%ungapped≈2000YES
U67/27/14-3C903C90173204352003100±25%ungapped≈2100YES
U67/27/14-3C913C91173204352003800±25%ungapped≈2600YES
U80/65/32-3C903C903107062190006000±25%ungapped≈2100YES
U93/52/30-3C943C94
2588402170008700±25%ungapped≈2100YES
U93/76/16-3C903C902588402170008700±25%ungapped≈2100YES
U93/76/16-3C943C94354
4481590003400±25%ungapped≈2100YES
U93/76/30-3C903C90354
4481590003400±25%ungapped≈2100YES
U93/76/30-3C943C94354
840
297000
6400±25%ungapped≈2150YES
U93/76/30-3C943C90354
840
297000
6400±25%ungapped≈2150YES