date: april 21-2000 pre by:wuqingli rev.: x.0 10 base-t, smd ethernet transformer p/n:TS6121B data sheet a. characteristics description: 1. 16 pin smd surface mount package. 2. dual channel low cost. 3. operating temperature range: 0c to +70c b. electrical specifications: (@ 25 c) 1.turns ratio: tx (16-14:1-3) = 1.25ct: 1 ct, rx (6-8:11-9) = 1ct: 1ct 5% 2.primary ocl (tx & rx): 350 uh min@ 100 khz/0.1 vrms, 8ma dc 3. interwinding capacitance cw/w: 25 pf max 4.leakage inductance: 0.5 uh max 5.dc resistance pr1 (rx & tx): 0.9 ohm max 6. hi-pot isolation: 1500vrms min @ 0.5 ma 7. crosstalk (0.1-100mhz): -38db min 8. return loss (db min): 0.5-30 mhz 40mhz 50mhz 60-80mhz -18 -15.5 -13.6 -12 9. cmrr (0.1-100 mhz): -40 db min 10.insertion loss (1mhz~100mhz): -1.15db max c.schematic & dimensions & marking (unit mm):
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