FT100 Ferrite Toroid

Measuring Complex Permeability

OD=25.86 mm
ID=13.00 mm
Ht=6.41 mm
8T Lo=0.05644 uH
2T Lo=0.0044 uH (empirical to match 8T)
AL=97.5 nH
μi=111

AIM-FT100-8T.csv
AIM-FT100-2T.csv

Equations

Ls=uH (measured with 8T at frequency within range of VNA)
AL=(Ls / Turns2) * 1000
Lo=0.0004606 * LOG(OD / ID) * Ht * Turns2
μi=Ls / Lo
μ'=L / Lo
Q=Xs / Rs
μ"=μ' / Q

Fair-Rite Permeability Files

Fair-Rite permeability tables can be found here. Look for the links "PERMEABILITY (CSV)."