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Characteristics  
Unit
NP20D
NP22D
μi
Initial permeability
23℃ 2000 2200
Bs
Saturation magnetic flux density
23℃ mT 270 260
kA/m 0.8 0.8
tanδ/μi
Relative loss factor
23℃ ×10-6 15 15
MHz 0.1 0.5
αμir
Relative temp factor
20~60℃ ×10-6 2 3
Tc
Curie temperature
110 90
ρ
Electrical resistivity
Ω・m 105 105