26 SAMWHA ELECTRONICS Material Characteristics Stable Permeability Material for Temp. Change Material ST-30B μiac Initial permeability Relative loss factor tanδ/μiac ×10-6 Bs mT Saturation flux density (1194A/m) Remanence Br mT Coercivity Hc A/m Core loss (100kHz, 200mT) Pcv kW/m3 Relative temp. factor αμr ×10-6/℃ hB Hysterisis material constant ×10-6/mT Curie temperature Density Tc d Resistivity ρ 3000 ±25% < 3.0 530 420 100 12 380 500 650 -1.0~1.0 -1.0~1.0 -1.0~1.0 f:100kHz 25℃ 100℃ 25℃ 25℃ 25℃ 40℃ 60℃ -20~20℃ 20~60℃ 60~100℃ 10kHz, 25℃ ℃ kg/m3 < 0.3 > 240 4.80×103 25℃ Ω·m >5 Note : 1) Typical values 2) The values were obtained with toroidal cores(30X8-20H) at room temperature unless indicated otherwise Permeability vs. Temperature 5000 4000 4000 μ' 3000 μ" 3000 μ" 2000 2000 1000 1000 0 100 101 102 103 7000 6000 Initial permeability, μ iac Complex permeability, μ',μ" Permeability vs. Frequency 5000 0 104 5000 4000 3000 2000 1000 0 -50 0 50 tan δ/μ i vs. Frequency 150 200 250 Bm vs. Hm 10 -2 550 25℃ 500 10-3 450 400 Bm(mT) Relative loss factor, tan δ/μ i 100 Temperature (℃) Frequency (kHz) 10 -4 10-5 100℃ 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