defining a degree of excellence
T1/CEPT/ISDN-PRITRANSFORMERS
DUAL SURFACE MOUNT
TM0002
Bel introduces a new ISDN TI/CEPT/
ISDN-PRI Transformer in a surface
Dual surface mount package contains both transmit
andreceivetransformers.
Models matched to leading transceiver chips.
Provide 1500 Vrms Isolation.
mount package
.475
(12.1)
MAX
12
10
9
8
7
12
11 10 9
8
7
1
12
.085(2.16)
4
1
.675(17.2)
MAX
1
2
3
4
5
8
6
1
2
3
4
5
6
.030(0.76)
TYP
12 11 10
9
8
7
12
10
9
7
7
6
.100(2.54)
TYP
2
5
.600
(15.3)
MAX
1
2
3
4
6
1
2
3
4
5
6
.400
(10.2)
MAX
12 11
10 9
7
6
.340(8.64)
MAX
1
3
4
6
.004
.010/.020
(0.25/0.51)
.040/.050
(1.01/1.27)
ELECTRICALS SPECIFICATIONS @ 25O C
* Extended Temp. Range Models
Part Number
Turns Ratio
OCL 25O
C
Cw/w
LL
DRC PRI
Sch Primary
Pins
DRC SEC
(pri:sec +/-5%)
(mH min)
(pf max) (uH max) (ohms max)
(ohms max)
12-10,4-6
12-10,4-6
12-10,4-6
12-10,4-6
12-10,4-6
1-3,4-6
1.0 & 1.0
1.0 & 1.0
1.5 & 1.5
1.0 & 1.0
1.0 & 1.0
1.1 & 1.1
1
1
2
4
5
6
1.2 & 1.2
1.2 & 1.2
1.6 & 1.6
1.5 & 1.2
1.5 & 1.2
1.6 & 1.6
50 & 50 0.8 & 0.8
50 & 50 0.8 & 0.8
60 & 50 1.0 & 0.8
60 & 50 0.8 & 0.8
50 & 60 0.8 & 0.8
50 & 40 1.3 & 1.3
1.0 & 1.0
1.7 & 1.7
2.0 & 1.7
1.0 & 1.7
1.1 & 1.7
1.1 & 0.7
S553-6500-03 1ct:1ct & 1ct:1ct
S553-6500-05 1ct:2ct & 1ct:2ct
S553-6500-06 1ct:2ct & 1:1.36ct
S553-6500-07 1:1.15ct & 1ct:2ct
S553-6500-08 1:1:1.266 & 1:2ct
S553-6500-09
2:2ct & 2:1
At -40 dregee C, OCL is 600 uH min. for all low temp. models with the exception
of S553-6500-09 which is 800 uH min.. All other parameters are specified at
+25 degree C only.
*Extented temp. range is -40 C to +85 C
Corporate Office
Bel Fuse Inc.
198 Van Vorst Street, Jersey City, NJ 07302-4496
Tel: 201-432-0463
Fax: 201-432-9542
E-Mail: BelFuse@belfuse.com
Internet: http://www.belfuse.com
Far East Office
Bel Fuse Ltd.
8F/8 Luk Hop Street
San Po Kong
Kowloon, Hong Kong
Tel: 852-2328-5515
Fax: 852-2352-3706
European Office
Bel Fuse Europe Ltd.
Preston Technology Management Centre
Marsh Lane, Preston PR1 8UD
Lancashire, U.K.
Tel: 44-1772-556601
Fax: 44-1772-888366
T101