Bothhandusa.com 40PIN SMD ETHERNET 10/100 BASE TX TWO PORT TRANSFORMER P/N: 40ST1021D 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 Turns Ratio OCL (uH Min) (±3%) @100KHz/0.1V Number 40ST1021D L.L Rise Time HI-POT (pF Max) (uH Max) (nS Typ) (Vrms) 20 0.4 2.5 1500 CW/W TX RX with 8mA DC Bias 1CT:1CT 1CT:1CT 350 Continue Part Number 40ST1021D Insertion Loss Return Loss Cross talk DCMR (dB Max) (dB Min) (dB Min) (dB Min) TX/RX 0.3-100MHz 1-30MHz -1.15 -18 Schematic 40-50MHz 60-80MHz 0.3-60MHz 60-100MHz -14 -12 -40 -35 60MHz 100MHz 200MHz -40 -33 -25 Mechanical 462 Boston St - Topsfield, MA 01983 - Phone: 978-887-8050 - Fax: 978-887-5434