Prepared: Dennis Hsieh Approved: Jess Kuo Date: Mar 31,1997.
Drawing no.: 20PMT03 REV: 0 Page: 1 / 1
10/100 Base TX Transformer YCL
Designed for general Chipsets
Model No.: 20PMT03
Feature:
Designed to meet IEEE802.3u Requirement.
Designed to meet IR 235 Degree C Peak Requirement.
Specifications: At 25 degree C.
1. Primary inductance (Lp): 350µ H min. @ 100Khz/100mV/8mAdc bias.
2. Leakage inductance (LL): 0.9µ H max. @ 100Khz/100mV.
3. Primary Capacitance (Cww): 18pf max.
4. Turn Ratio: TX: 1CT:1CT, RX: 1CT:1CT
Parts no.
20PMT03
Insertion
Loss
(dB max)
1-125MHz
Rise Time
(ns typical)
Return Loss
(dB typical)
Crosstalk
(dB min)
Isolation
Voltage
(Vrms min)
CMRR
(dB min)
MHz MHz MHz
0.1-60 60-100 60-100 60-1000.1-60 0.1-60
1500-1.1 2.5 -18TX/-17RX -13TX/-15RX -42TX/40RX -40TX/-35RX -40 -38
Dimension: mm(inch) +/- 0.25(0.010)
16.00(0.630)
9.40(0.370)
2.54(0.100
17.78(0.70025.40(1.000
1
2.54(0.100)
17.02(0.670)
17.78(0.700
2.54(0.100
1.02(0.040)
Suggested footprint
6.35(0.250)
Schematic:
1
3
6
TD+
TD-
TX+
TX-
8
CMT
16
15
9
10
RX+
CT
RX-
RD+
RD-
CTCT 4 5
13
12