Bothhandusa.com 40PIN SMD ETHERNET 10/100 BASE TX TWO PORT TRANSFORMER P/N: 40ST1021B DATA SHEET Feature ! ! ! 40-PIN SMD Package designed to meet IEEE 802.3 & IR requirement . Operating temperature range: 0℃ to +70℃. Storage temperature range: -25℃ to +125℃. Electrical Specifications @ 25°C Part Number 40ST1021B Turns Ratio OCL (uH Min) (±3%) @100KHz/0.1V TX RX with 8mA DC Bias 1CT:1 1CT:1CT 350 CW/W L.L Rise Time (pF Max) (uH Max) (nS Typ) 28 0.4 2.5 Insulation Resistance (MΩ) 10,000 HI-POT (Vrms) 1500 Continue Part Number Insertion Loss Return Loss Cross talk DCMR (dB Max) (dB Min) (dB Min) (dB Min) 0.3-100MHz 40ST1021B -1.15 Schematic 0.3-30MHz 30-60MHz 60-80MHz 0.3-60MHz 60-100MHz -16 -12 -12 -40 -35 60MHz 100MHz 200MHz -40 -33 -25 Mechanical 462 Boston St - Topsfield, MA 01983 - Phone: 978-887-8050 - Fax: 978-887-5434