SAMWHA ELECTRONICS Stable Permeability Material for Temp. Change Material ST-40B Initial permeability μiac 4300 ±25% Relative loss factor -6 < 3.0 tanδ/μiac ×10 f:100kHz Saturation flux density (1194A/m) Bs mT 25℃ 550 100℃ 440 Remanence Br mT 25℃ 100 Coercivity Hc A/m 25℃ 8 ×10-6/℃ 5~25℃ 1.5~3.0 25~55℃ -3.0~-1.0 10kHz, 25℃ < 0.15 Relative temp. factor αμr Hysterisis material constant hB Curie temperature Tc ℃ Density d kg/m Resistivity ρ -6 ×10 /mT > 260 4.90×103 3 25℃ Ω·m >7 Note : 1) Typical values 2) The values were obtained with toroidal cores(30X8-20H) at room temperature unless indicated otherwise Permeability vs. Temperature 6000 6000 5000 5000 4000 4000 μ" 3000 3000 2000 2000 1000 1000 7000 6000 0 100 101 102 Initial permeability, μ iac Complex permeability, μ',μ" Permeability vs. Frequency 0 104 103 5000 4000 3000 2000 1000 0 -50 0 50 100 150 200 tan δ/μ i vs. Frequency Bm vs. Hm 600 10 -2 550 25℃ 500 10-3 450 100℃ 400 Bm(mT) Relative loss factor, tan δ/μ i 250 Temperature (℃) Frequency (kHz) 10-4 10-5 350 300 250 200 150 10-6 100 50 10-7 101 102 Frequency (kHz) 103 0 0 200 400 600 Hm(A/m) 800 1000 1200 27