40ST1042-1

40 PIN SMD ETHERNET 10/100 BASE QUAD PORT TRANSFORMER PN/:40ST1042-1 DATA SHEET A.GENERAL SPECIFICATIONS 1.IEEE 802.3 ETHERNET COMPATIABLE, 100 BASE-TX 2.SURFACE MOUNTABLE 3.DESIGN FOR MULTIPORT REPEATER AND ETHERNET SWITCHING HUB APPLICATION 4.CUSTOMER DESIGNS AVAILABLE FOR SPECIFIC APPLICATION B.ELECTRICAL SPECIFICATIONS @ 25°C 1.ISOLATION HI-POT: 1500 Vrms (PRI. /SEC.) 2.INSULATION RESISTANCE: 10,000 MOHM. 3.TURN RATIO (±5%): TX=2CT: 1CT, RX=1:1 4.PRI. /SEC. Cw/w (pF TYP): 30 5.LEAKAGE INDUCTANCE: TX: 1.3 uH, RX: 0.5 uH Max 6.PRI.DCR (OHM Max): TX=0.9, RX=0.9 7.CROSSTALKS (dB Min): -38 AT 1MHz-100 MHz 8.CMRR (dBMin): -40 AT 1MHz-100 MHz 9.OCL (uH,Min): 350 at 8mA/dc FORM 0-7 C 10.RETURN LOSS: 0.5-30 40 50 60-80 (MHz) -18 -15.5 -13.6 -12 (dB Min) 11.INSERTION LOSS: -1.1dB Max @ 1-100MHz C.SCHEMATIC & DIMENSIONS & MARKING (UNIT mm): Date: April 15-2000 Pre by:WuQingli Rev.: X.0