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
defining a degree of excellence
T1/CEPT/ISDN-PRI TRANSFORMERS
ENHANCED 3000VRMS ISOLATION
SCHEMATICS
3
5
1
1
8
10
6
5
6
10
4
5
1
2
6
10
3
5
1
6
10
3
1
2
4
8
6
10
A
B
C
D
E
All dimensions are in inches(mm) +/- 0.01(0.25) unless otherwise
specified.
TOP VIEW
SIDE VIEW
bel
Date Code
PART NUMBER
1
2
3
4
5
10
9
8
7
6
0.558(14.12)
Max
0.558
(14.12)
Max
0.130
(3.30)
0.400
(10.12)
0.10(2.5)
0.20
(5.08)
Leads are AWG 22, solderable
0.400
(10.12)
Max
0.400
(10.12)
MECHANICALS
BOTTOM VIEW
0553-6500-19
0553-6500-20
0553-6500-21
0553-6500-22
0553-6500-23
0553-6500-17
0553-6500-18
0553-6500-24
Turns
Ratio
+/- 2%
1:1
1CT:2CT
1:1.36CT
1:1:2
1:1:1.58
1:1:1.26
1CT:2CT
1CT:3CT:1
Primary
Pins
Schem.
B
A
D
C
C
D
A
E
DCR Sec
(ohms)
Max
0.70
1.10
0.90
0.70
0.50
1.10
1.10
1.70
0.70
0.70
0.70
0.70
0.70
0.70
0.70
0.70
DCR Pri
(ohms)
Max
0.50
0.30-0.50
0.60
0.50
0.70
0.60
0.55
0.80
L
L
(
H)
Max
C
ww
(pF)
Max
30
30
35
25
18
35
30
30
1.20
1.20
1.20
0.80
0.80
1.50
1.20
0.60
OCL
Primary
(mH)
Min
Extended Temperature Units, -40
o
C to 85
o
C
ELECTRICALS
@ 25
O
C
1-5
1-5
10-6
1-5(2,4 sh)
1-5 (2,4 sh)
10-6
1-5
1-3
Part
Number
5
TM0005
T104
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