Designed to provide isolation and impedance matching for 4
twisted pairs in a 100 Mbps Transmission over UTP-3 Cable.
100 BASE-T4
TRANSFORMERS
IEEE 802.3 Compatible
Designed for popular 100Base-T4 transceiver chips
Common Mode Choke available for improved EMI performance
Electrical Specifications at 25o C
Designed for
use with
Transceiver I.C.
Quad SMD Dual SMD
Turns
Ratio
+3%
OCL
Min.
( µH )
LL
max.
( µH )
DCRP
max.
( Ω )
Cw/w
max.
( pF )
24-Pin
16-Pin
Isolation
(VRMS
Tape & Reel
Available
Part. No.
Part. No.
)
T-15200S
1:2CT
350
350
1.0
1.0
0.5
1.0
14
10
1500
1500
SEEQ 80C240P
Cypress CY7C971 T-15203
T-15202
T-15201S 2CT:1CT
24-Pin SMD Package: T-15202, T-15203
Dimensions in Inches (mm)
T-15202 Schematic Diagram
PRI
PRI
20
PRI
PRI
24 23 22 21
19 18 17 16 15 14 13
0.700
(17.78)
MAX.
.526
(13.35)
.296
(7.52)
MAX.
1
2
3
4
5
6
7
8
9
10 11 12
SEC
SEC
SEC
SEC
.010
(0.25)
TYP.
.035
T-15203 Schematic Diagram
(0.89)
.015
(0.38)
TYP.
PRI
PRI
PRI
PRI
TYP.
.016
(0.41)
TYP.
.050
(1.27)
TYP.
.645 (16.39)
.622 (15.80)
20
24 23 22 21
19 18 17 16 15 14 13
1
2
3
4
5
6
7
8
9
10 11 12
SEC
24-Pin DIP Package: T-15200S & T-15201S
Dimensions in Inches (mm)
SEC
SEC
SEC
T-15200S Schematic Diagram
T-15201S Schematic Diagram
.505
(12.83)
MAX.
.285
(7.24)
MAX.
PRI
PRI
PRI
PRI
16 15 14 13
16 15 14 13
12 11 10
9
8
12 11 10
9
.205
(5.21)
MAX.
.010
(0.25)
TYP.
.025
(0.64)
TYP.
.015
(0.38)
TYP.
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
.050
(1.27)
TYP.
.016
(0.41)
TYP.
.380 (9.65)
.360 (9.14)
SEC
SEC
SEC
SEC
Impedance
Ω (Min.)
100 BASE-T4
4000
3000
COMMON MODE
CHOKE
Typical
2000 @ 30 Mhz
1500 @ 50 Mhz
1000 @ 70 Mhz
Electrical Specifications at 25o C
2000
Turns
Ratio
+3%
OCL
Min.
( µH )
LL
max.
( µH )
DCRP
max.
( Ω )
Cw/w
max.
( pF )
Minimum
Part
Number
Isolation
1000
0
(VRMS
)
F-1515
1 :1
36
0.2
0.35
15
500
10
20
40
60 80 100
200
300
F-1515: 16-Pin SMD package
per T-15200S above.
Frequency ( MHz )
F-1515
Schematic
Diagram
ZZZꢀUKRPEXVꢁLQGꢀFRP
For other values & Custom Designs, contact factory.
100BAST2 - 2/02
Specifications subject to change without notice.
15801 Chemical Lane, Huntington Beach, CA 92649-1595
Rhombus
Industries Inc.
www.rhombus-ind.com
Tel: (714) 898-0960 • Fax: (714) 896-0971