B B1 MAGNETIC MATERIAL + CORES MAGNETIC MATERIAL B1.1 FERROCARIT | FI 340 A medium permeability material with a low temperature dependence of the initial permeability and a frequency stability up to 0,4 MHz. Optimized for use in broadband transformers with high DC-bias current SYM BOL VALUE U N IT µi 4300 ± 20% 1 ta n δ / µ i < 20 ηB < 0 ,6 -6 10 10 -6 C O N D IT IO N S Complex Permeability 10000 2 5 °C ; ≤ 1 0 k H z ≤ 0 ,2 5 m T 100°C 2 5 °C ; 0 ,1 M H z ≤ 0 ,2 5 m T 25°C 2 5 °C ; 1 0 k H z ≤ 1 ,5 m T to 3 m T / mT 1000 390 B 2 5 0 A /m mT 70°C µ`µ`` 2 5 °C ; 1 6 k H z 100°C 1 0 0 °C ; 1 6 kH z 235 100 2 5 0 A /m 70°C 2 5 °C ; ..... kH z m W / cm ³ Pv 25°C .......... m T µ` 1 0 0 °C ; ..... k H z µ`` .......... m T 130 Tc 10 1 0 kH z ≤ 0 ,2 5 m T °C 10 100 1000 10000 f / kHz Initial permeability µi as a function of temperature T Relative loss factor as a function of frequency f 1000 10000 9000 8000 7000 tanδ/µi / 10-6 100 µi 6000 5000 4000 10 3000 2000 1000 1 0 0 20 40 60 80 100 120 10 140 100 f / kHz T / °C Magnetization curves 1000 Incremental permeability 400 10000 350 300 1000 µΔ B / mT 250 200 150 100 100 50 25 °C 100 °C Frequency: 10 kHz Induction: ≤ 0,2 mT 0 10 -50 0 50 100 150 H / A/m 200 250 300 1 10 100 H_ / A/m 135 1000