J Material

J material is a medium perm general-purpose material. Well suited both for EMI/RFI filtering and broadband transformers.

Initial Perm (10 kHz)	5,000 ± 20%
Saturation Flux Density (4,300 G at 15 Oe, 25°C)	430 mT, 11.9 A•T/cm
Curie Temperature	145°C
Maximum Usable Frequency (50% roll-off)	≤0.7 MHz
Relative Loss Factor (tan δ/µ_iac) X10^-6, 25°C	≤15 (100 KHz)
Remanence (1,000 G, 25°C)	100 mT
Resistivity	0.5 Ω-m
Density	4.8 g/cm³