HIGH FREQUENCY MAGNETICS
T1/E1 Octal Transformer Modules
TM00132
SCHEMATICS
S553-6500-61
S553-6500-66
1 : 1.41
1 : 2.42
1
1
40 TXO+
39
40 TXO+
39
TXIN+
TXIN+
TXIN-
RXO+
2
3
TXIN-
RXO+
2
3
TXO-
TXO-
1.41 : 1
1 : 2.42
1 : 2.42
38 RXIN+
37 RXIN-
38 RXIN+
RXO-
4
6
RXO-
4
6
37 RXIN-
35 TXO+
1 : 1.41
TXIN+
35
TXO+
TXIN+
TXO-
7
8
34
33
TXIN-
RXO+
7
8
34 TXO-
TXIN-
RXO+
1.41 : 1
1 : 2.42
1 : 2.42
1 : 2.42
1 : 2.42
1 : 2.42
RXIN+
33 RXIN+
RXO-
9
RXIN-
32
RXO-
9
RXIN-
32
1 : 1.41
TXIN+
11
30 TXO+
TXIN+
11
30 TXO+
TXIN-
12
TXO-
29
28
TXIN-
12
TXO-
29
28
1.41 : 1
RXO+ 13
RXIN+
RXO+ 13
RXIN+
RXO- 14
TXIN+ 16
RXIN-
TXO+
27
25
RXO- 14
TXIN+ 16
RXIN-
TXO+
27
25
1 : 1.41
TXIN- 17
TXO-
24
23
TXIN- 17
TXO-
24
23
1.41 : 1
RXO+
18
RXIN+
RXO+
18
RXIN+
19
RXO-
RXIN-
22
19
RXO-
RXIN-
22
S553-6500-69
1.36CT : 1
TXO+
1
2
3
40
TXIN+
TXOCT
TXO-
39
38
TXIN-
RXO+
•
Octal transformer solutions for T1/E1 applications
including concentrators, channel banks and cellular
base stations
1 : 2CT
1.36CT : 1
1 : 2CT
RXIN+
4
37 RXOCT
36
RXIN-
TXO+
5
6
RXO-
35 TXIN+
•
•
Octals utilize Bel’s popular 40-pin SMD package
7
8
TXOCT
TXO-
34
TXIN-
Designed to meet the stringent demands of high density
designs
RXIN+
9
RXO+
33
32
RXOCT
RXIN-
TXO+
10
31 RXO-
1.36CT : 1
•
•
•
Minimum interwinding breakdown voltage of 1500 Vrms
Designed for UL1459/UL1950
11
12
13
30
TXIN+
TXOCT
TXO-
29 TXIN-
28 RXO+
1 : 2CT
RXIN+
14
For operating temperature range of -40° to +85° C,
OCL is 600µH minimum at -40° C
27
26
RXOCT
RXO-
RXIN-
15
1.36CT : 1
TXO+ 16
25
24
TXIN+
17
18
TXOCT
TXO-
TXIN-
1 : 2CT
RXIN+ 19
23
22
21
RXO+
RXOCT
RXO-
RXIN-
20
©2000 Bel Fuse Inc. Specifications subject to change without notice. 06.01
CORPORATE
FAR EAST
EUROPE
Bel Fuse Inc.
Bel Fuse Ltd.
Bel Fuse Europe Ltd.
206 Van Vorst Street
8F / 8 Luk Hop Street
San Po Kong
Kowloon, Hong Kong
Tel 852-2328-5515
Fax 852-2352-3706
www.belfuse.com
PrestonTechnology Management Centre
Marsh Lane, Suite G7, Preston
Lancashire, PR1 8UD, U.K.
Tel 44-1772-556601
Fax 44-1772-888366
www.belfuse.com
Jersey City, NJ 07302
Tel 201-432-0463
Fax 201-432-9542
www.belfuse.com
T1-74