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Characteristics  
Unit
NB25S NB50S NB65S NB90S NB12D
μi
Initial permeability
23℃ 250 500 650 900 1200
Bs
Saturation magnetic flux density
23℃ mT 500 440 410 390 360
kA/m 8 4 1.6 1.6 1.6
tanδ/μi
Relative loss factor
23℃ ×10-6 25 15 15 13 10
MHz 0.1 0.1 0.1 0.1 0.1
αμir
Relative temp factor
20~60℃ ×10-6 24 15 20 18 6
Tc
Curie temperature
>250 240 200 150 130
ρ
Electrical resistivity
Ω・m
106
106
106
106
106