Bothhand USA. e-mail: [email protected] http://www.bothhandusa.com 40PIN SMD ETHERNET 10/100 BASE TX TWO PORT TRANSFORMER P/N: 40ST1021B DATA SHEET Page1/1 Feature 40-PIN SMD Package designed to meet IEEE 802.3 & IR requirement . z Operating Temperature range: 0°C to +70°C. z Storage temperature range: -25°C to +125°C. z Electrical Specifications @ 25°C Part Number 40ST1021B Turns Ratio OCL (uH Min) (±3%) @ 100KHz/0.1Vrms TX RX with 8mA/DC Bias 1CT:1 1CT:1CT 350 HI-POT (uH Max) (n s Typ) Insulation Resistance (MΩ) 0.4 2.5 10,000 1500 L.L Rise Time (pF Max) 28 CW/W (Vrms) Continue Part Number Insertion Loss Return Loss (dB Max) Cross talk (dB Min) DCMR (dB Min) TX/RX (dB Min) 0.3-100 MHz 0.3-30MHz 30-60MHz 60-80MHz 0.3-60MHz 60-100MHz 40ST1021B -1.15 Schematic -16 -12 -12 -40 -35 30MHz 60MHz 200MHz -40/-37 -33/-28 -25/-25 Mechanical 462 Boston St - Topsfield, MA 01983 - Phone: 978-887-8050 - Fax: 978-887-5434 A3(02/11)