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10Base T Low Pass Filter  
Model no. 20LF021C  
YCL  
Specifications: at 25 degree C.  
1. Insertion Loss(1-10MHz): -4.5dB max.  
2. Return Loss(1-10MHz): -15dB min.  
3. Cut-Off frequency, -3dB : 17MHz+/-0.7MHz.  
4. Attenuation:  
Frequency  
Transmitter  
Receiver  
20 25 30 40 50 MHz  
7
6
19 32 35 40 dB  
14 20 31 35 dB  
5. Group Delay(5-10MHz): 4ns max.  
6. Cross Talk(1-10MHz): -45dB min.  
7. Common Mode Rejection Ratio: -45dB min @ 70-100Mhz.  
8. Isolation Voltage for 1 minute: 1,500Vrms.  
Dimension: mm(inch) +/-0.25(0.010)  
10.16(0.400)  
25.40(1.000)  
3.30(0.130)  
0.50X0.25+/-0.05  
7.62(0.300)  
2.54(0.100)  
17.78(0.700)  
Schematics:  
61.9  
1
16  
15  
14  
12  
11  
10  
9
422  
2
50  
50  
1.2K  
61.9  
3
4
422  
5
6
7
8
Prepared: Dennis Hsieh  
Drawing no.: 20LF021C  
Approved: Jess Kuo  
REV: 1  
Date: Mar 12, 1997.  
Page: 1/ 1