100 BASE-T4
Designed to provide isolation and impedance matching for 4
twisted pairs in a 100 Mbps Transmission over UTP-3 Cable.
TRANSFORMERS
IEEE 802.3 Compatible
Designed for popular 100Base-T4 transceiver chips
Common Mode Choke available for improved EMI performance
o
Electrical Specifications at 25 C
Designed for
Quad SMD Dual SMD
use with
24-Pin
16-Pin
Transceiver I.C.
Part. No.
Part. No.
T-15202
SEEQ 80C240P
Cypress CY7C971 T-15203
Turns
Ratio
+3%
LL
max.
( µH )
DCRP
max.
(Ω)
Cw/w
max.
( pF )
Isolation
(VRMS)
1:2CT
2CT:1CT
T-15200S
T-15201S
OCL
Min.
( µH )
350
350
1.0
1.0
0.5
1.0
14
10
1500
1500
T-15202 Schematic Diagram
PRI
24
23
PRI
22
21
PRI
20
19
18
17
24-Pin SMD Package: T-15202, T-15203
Dimensions in Inches (mm)
PRI
16
15
14
Tape & Reel
Available
13
0.700
(17.78)
.526
(13.35)
MAX.
1
2
3
5
4
SEC
6
7
8
SEC
9
11
10
SEC
.296
(7.52)
12
MAX.
SEC
T-15203 Schematic Diagram
PRI
24
1
23
PRI
22
3
2
SEC
21
PRI
20
19
5
6
SEC
4
18
16
15
9
8
SEC
7
17
PRI
10
T-15200S Schematic Diagram
PRI
16
15
14
13
12
11
10
13
.050
(1.27)
PRI
16
15
TYP.
.645 (16.39)
.622 (15.80)
24-Pin DIP Package: T-15200S & T-15201S
Dimensions in Inches (mm)
T-15201S Schematic Diagram
9
TYP.
TYP.
TYP.
TYP.
11 12
SEC
PRI
14
.016
(0.41)
.010
(0.25)
.035
(0.89)
.015
(0.38)
.505
(12.83)
PRI
14
13
11
12
10
.285
(7.24)
MAX.
MAX.
9
.205
(5.21)
MAX.
2
3
4
5
6
SEC
1
8
7
2
3
4
5
6
SEC
SEC
100 BASE-T4
COMMON MODE
CHOKE
7
8
SEC
Electrical Specifications at 25o C
Part
Number
Turns
Ratio
+3%
OCL
Min.
( µH )
LL
max.
( µH )
DCRP
max.
(Ω)
Cw/w
max.
( pF )
Isolation
(VRMS)
F-1515
1 :1
36
0.2
0.35
15
TYP.
TYP.
.380 (9.65)
.360 (9.14)
Typical
3000
2000
Minimum
1000
0
10
F-1515: 16-Pin SMD package
per T-15200S above.
20
40
60 80 100
Frequency ( MHz )
200
300
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3') FDWDORJV DQG GDWD VKHHWV SOHDVH YLVLW
F-1515
Schematic
Diagram
Rhombus
Industries Inc.
.010
(0.25)
.025
(0.64)
4000
500
Specifications subject to change without notice.
TYP.
TYP.
TYP.
Impedance
Ω (Min.)
2000 @ 30 Mhz
1500 @ 50 Mhz
1000 @ 70 Mhz
.050
(1.27)
.016
(0.41)
Impedance ( Ohms )
1
.015
(0.38)
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For other values & Custom Designs, contact factory.
www.rhombus-ind.com
100BAST2 - 2/02
15801 Chemical Lane, Huntington Beach, CA 92649-1595
Tel: (714) 898-0960 • Fax: (714) 896-0971
