Materials












Ferrite Core Matierials

Inductors & Power Transformers

Material Initial Permeability Max Usable Frequency
L 900 6MHz
R 2300 1.8MHz
P 2500 1.8MHz
F 2500 1.5MHz
T 3000 1.5MHz

Inductors & Power Transformers

Material Initial Permeability Max Usable Frequency
C 900 8 MHz
E 2000 3 MHz
V 2300 1.5 MHz

EMI/RFI Filters & Broadband Transformers

Material Initial Permeability Max Usable Frequency
J 5000 0.7 MHz
W 10000 0.5 MHz

Powder Core Materials

Inductors & Power Transformers

Initial Permeability U vs. T dynamic range U vs. B dynamic range U vs.F flat to....
MPP 14 0.70% 0.40% 4MHz
26 0.90% 0.40% 3MHz
60 1.00% 0.80% 2MHz
125 1.30% 1.40% 300kHz
147/160/173 1.50% 1.90% 200kHz
200 1.60% 2.80% 100kHz
300 1.60% 4.50% 90KHz
High Flux 550 8.70% 21.00% 20KHz
14 1.50% 5.00% 3MHz
60 2.60% 13.50% 1MHz
125 3.60% 19.00% 700KHz
147 4.80% 22.00% 500KHz
160 5.50% 25.00% 300KHz
Kool Mu 26 1.70% 1.00% 2MHz
40 2.20% 1.10% 1MHz
60 3.40% 1.40% 900KHz
75 4.50% 2.00% 500KHz
90 5.20% 2.80% 500KHz
125 8.30% 3.40% 300KHz

Powder Core Materials

Inductors & Power Transformers

Material Type Flux Density Coercive Force
400 Hertz CCFR
KG Teslas Oersteds A/M
A Square Orthonol 14.2-15.8 1.42-1.58 0.15-0.25 11.9-19.9
D Square Permalloy 80 6.6-8.2 0.66-0.82 0.022-0.044 1.75-3.50
F Supermalloy 6.5-8.2 0.65-0.82 0.004-0.015 0.32-1.19
H 48 Alloy 11.5-14.0 1.15-1.40 0.08-0.15 6.4-12.0
K Magnesil 15.0-18.0 1.5-1.8 0.45-0.65 35.8-55.7
R Round Permalloy 80 6.6-8.2 0.66-0.82 0.008-0.026 0.64-2.07
S Supermendur 19.0-22.0 1.9-2.2 0.50-0.70 39.8-55.7
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