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F Material


F material is a medium frequency general-purpose power transformer, inductor and filter material. Slightly higher in perm than P or R Material. Engineered for lowest losses at 60°C.

Initial Perm (10 kHz) 3,000 ± 20%
Saturation Flux Density (4,700 G at 15 Oe, 25°C) 470 mT, 11.9 A•T/cm
Curie Temperature 210°C
Maximum Usable Frequency (50% roll-off)  ≤1.5 MHz 
Remanence (1,500 G, 25°C)   150 mT 
Resistivity   5 Ω-m
Density  4.8 g/cm3 

PERMEABILITY vs. TEMPERATURE

F-Perm-vs-Temp.jpg

CORE LOSS vs. TEMPERATURE

F-Loss-vs-Temp-(1).jpg

PERMEABILITY vs. FLUX DENSITY

F-Perm-vs-Flux-(1).jpg

CORE LOSS vs. FLUX DENSITY AT 100°C

PERMEABILITY vs. FREQUENCY

F-Perm-vs-Freq.jpg

FLUX DENSITY vs. TEMPERATURE

F-Flux-vs-Temp.jpg

B-H LOOP