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