ETC 20PMT03

10/100 Base TX Transformer
Designed for general Chipsets
YCL
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): 350µH min. @ 100Khz/100mV/8mAdc bias.
2. Leakage inductance (LL): 0.9µH max. @ 100Khz/100mV.
3. Primary Capacitance (Cww): 18pf max.
4. Turn Ratio: TX: 1CT:1CT, RX: 1CT:1CT
Parts no.
Insertion
Loss
(dB max)
1-125MHz
20PMT03
Rise Time
(ns typical)
-1.1
2.5
CMRR
(dB min)
MHz
0.1-60
60-100
Return Loss
(dB typical)
MHz
0.1-60
60-100
-18TX
/-17RX
-13TX
/-15RX
-42TX
/40RX
Crosstalk
(dB min)
MHz
0.1-60
60-100
-40TX
/-35RX
-40
Dimension: mm(inch) +/-0.25(0.010)
2.54(0.100
6.35
(0.250)
1
25.40(1.000
-38
17.78(0.700
9.40(0.370)
2.54(0.100
17.78(0.700
Isolation
Voltage
(Vrms min)
1500
2.54
(0.100)
1.02
(0.040)
17.02
(0.670)
16.00(0.630)
Suggested footprint
Schematic:
RD- 1
16 RX-
12 TX-
TD- 6
15 CT
RD+ 3
CT 4
Prepared: Dennis Hsieh
Drawing no.: 20PMT03
13 RX+
10 CMT
TD+ 8
9 TX+
CT 5
Approved: Jess Kuo
REV: 0
Date: Mar 31,1997.
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