100 BASE-T4
TRANSFORMERS
Four Transformers per Unit
Electrical Specifications at 25
o
C
Turns
OCL
Part
Ratio
Min.
(
µH
)
Number
+3%
T-15200
T-15201
1:2CT
2CT:1CT
350
350
L
L
max.
(
µH
)
1.0
1.0
DCR
P
max.
(
Ω
)
0.5
1.0
C
w/w
max.
( pF )
14
10
Isolation
(V
RMS
)
1500
1500
Designed to provide isolation and impedance
matching for 4 twisted pairs in a 100 Mbps
Transmission over UTP-3 Cable.
Designed for popular 100Base-T4 transiever chips
IEEE 802.3 Compatible
Fast Rise Times
Common Mode Choke available for improved
EMI performance
The above parts are avaiable in surface mount versions.
Add suffix "G".
See data sheet for dimensions.
T-15200
Schematic Diagram
PRI
PRI
22
21
20
19
18
PRI
17
16
15
PRI
14
13
T-15200
Schematic Diagram
PRI
24
23
22
21
PRI
20
19
18
PRI
17
16
15
PRI
14
13
T-15200
: Designed for
use with SEEQ
80C240P
T-15201
: Designed for
use with Cypress
CY7C971
24
23
1
2
SEC
3
4
5
SEC
6
7
8
SEC
9
10
11
SEC
12
1
2
SEC
3
4
5
SEC
6
7
8
SEC
9
10
11
SEC
12
1.280
(32.51)
MAX.
.285
(7.24)
MAX.
Physical
Dimensions
inches (mm)
.020
.295
(0.51) (7.49)
TYP. MAX.
.008 R
(0.20)
.010
(0.25)
TYP.
SMD versions
available on
Tape & Reel
.300
(7.62)
.120
(3.05)
MIN.
.018
(0.46)
TYP.
.040
(1.02)
TYP.
.100
(2.54)
TYP.
.365
(9.27)
MAX.
Impedance ( Ohms )
100 BASE-T4
COMMON MODE
CHOKE
Electrical Specifications at 25 C
o
4000
Typical
3000
2000
Minimum
1000
Part
Number
F-1515
Turns
Ratio
+3%
1 :1
OCL
Min.
(
µH
)
36
L
L
max.
(
µH
)
0.2
DCR
P
max.
(
Ω
)
0.35
C
w/w
max.
( pF )
15
Isolation
(V
RMS
)
500
0
10
20
40
60 80 100
Frequency ( MHz )
200
300
Impedance
Ω
(Min.)
2000 @ 30 Mhz
1500 @ 50 Mhz
1000 @ 70 Mhz
F-1515
Schematic Diagram
Dimensions in Inches (mm)
.505
(12.83)
MAX.
.285
(7.24)
MAX.
.205
(5.21)
MAX.
.016
(0.41)
TYP.
Specifications subject to change without notice.
.050
(1.27)
TYP.
.015
(0.38)
TYP.
.025
(0.64)
TYP.
.010
(0.25)
TYP.
.380 (9.65)
.360 (9.14)
100BASET - 4/99
For other values & Custom Designs, contact factory.
Rhombus
Industries Inc.
27
15801 Chemical Lane, Huntington Beach, CA 92649-1595
Tel: (714) 898-0960
•
Fax: (714) 896-0971
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