A1801

COMMON MODE CHOKE For Fibre Channel, Gigabit Ethernet, and IEEE 1394 Applications Common Mode Attenuation from 200 MHz to 2.5 GHz Reduces radiated emissions and improves noise immunity 235°C Peak Reflow temperature rating Surface mount, auto-insertable package Industrial temperature range Electrical Specifications @ 25°C — Operating Temperature -40°C to +85°C Part Number A1801 Common Mode Attenuation (dB TYP) 1.0 GHz 1.5 GHz -11.0 -10.0 Primary Inductance OCL (µH MIN) 3.0 DCR (Ω MAX) .15 200 MHz -11.0 500 MHz -11.0 2.0 GHz -9.0 2.5 GHz -7.5 Mechanical A1801 .075 1,90 .290 MAX 7,37 .340 .190 8,64 4,83 .240 MAX 6,10 Date Code Rev Country of Origin Schematic .150 3,81 .050 1,27 1 .030 0,76 8 4 5 .150 MAX 3,81 .004 / 0,10 8 SURFACES 8X .035 0,89 .050 1,27 TYP Dimensions: Inches mm Unless otherwise specified, all tolerances are ± .005 0,13 Weight . . . . . . .0.2 grams (max) Tape & Reel . . . . . . . .1750/reel Tube . . . . . . . . . . . . . . .80/tube U.S: 858 674 8100 U.K: 44 1483 401 700 France: 33 3 84 35 04 04 Singapore: 65 287 8998 Taiwan: 886 2 2698 0228 http://www.pulseeng.com PRELIMINARY A104.P (2/01) COMMON MODE CHOKE Application Notes: For Fibre Channel, Gigabit Ethernet, and IEEE 1394 Applications 1. Values for R1 and R2 are determined by system transmit amplitude requirements. A value of 0 Ω for R1 and R2 will yield an output with maximum amplitude but distorted due to impedance mismatch. A value of 68 Ω will provide an optimum wavefor...