22 SAMWHA ELECTRONICS Material Characteristics High Q Material Material SM-8T Initial permeability μiac 800 ±20% Relative loss factor -6 tanδ/μiac ×10 f:500kHz < 25 Saturation flux density (1194A/m) Bs mT 25℃ 480 Remanence Br mT 25℃ 200 Coercivity Hc A/m 25℃ 40 -30~20℃ -0.5~0.5 Relative temp. factor αμr ×10-6/℃ 0~20℃ 20~70℃ -6 Hysterisis material constant hB Curie temperature Tc ℃ Density d kg/m3 Resistivity ρ ×10 /mT 1.0~2.0 10kHz, 25℃ < 0.3 > 250 4.70×103 25℃ Ω·m >3 Note : 1) Typical values 2) The values were obtained with toroidal cores(30X8-20H) at room temperature unless indicated otherwise Permeability vs. Frequency Permeability vs. Temperature 4000 7000 6000 5000 1000 4000 μ" 3000 500 2000 1000 0 100 101 102 103 Initial permeability, μ iac Complex permeability, μ',μ" 1500 0 104 3000 2000 1000 0 -50 0 50 100 150 200 tan δ/μ i vs. Frequency Bm vs. Hm 500 10 -2 25℃ 450 400 10-3 100℃ 350 Bm(mT) Relative loss factor, tan δ/μ i 250 Temperature (℃) Frequency (kHz) 10-4 10-5 300 250 200 150 100 10 -6 50 10 0 -7 101 102 Frequency (kHz) 103 0 200 400 600 Hm(A/m) 800 1000 1200