B B1 MAGNETIC MATERIAL + CORES MAGNETIC MATERIAL B1.3 FERROCARIT | FE 818 A material with high thermal and temporal stability, insensible of external magnetic fields SYMBOL VALUE UNIT µi 18 ± 10% 1 tan δ / µi 200 µa 21 -6 14 12 25°C ; 10 kHz 11 150 16 500 mT 1 T max 18 1 kHz 1 µΔ < 12 ≤ 0,25 mT 25°C ; 0,16 MHz ≤ 0,25 mT 16 aF Initial permeability µi as a function of frequency f 20 µi 10 CONDITIONS 25°C ; ≤ 10 kHz 10 -6 8 25°C ; 10 kHz 6 30000 A/m 4 25°C - 70°C /K 10 10000 A/m 2 ≤ 10 kHz; ≤ 0,25 mT 0 10 °C Magnetization curves 100 f / kHz 1000 Incremental permeability µΔ as a function of premagnetization H 1000 20 18 800 16 14 12 µΔ B / mT 600 10 400 8 6 200 4 0 -1000 0 2 0 0 100 10000 20000 30000 40000 50000 60000 70000 80000 H / A/m Spezific power loss Pv as a function of frequency f and induction Bs kH z 10 0 kH z kH z 10 Pv / mW/cm³ 40 100 10 10 100 Bs / mT 10000 H_ / A/m 10000 1000 1000 1000 197 100000