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
MECHANICALS
Leads on through
hole components
are 22 AWG
Solderable
0.70(17.78)
0.40
(10.16)
0.10(2.54)
Dimensions are in inches(mm).
Dimension Tolerance is +/- 0.01(0.25) unless otherwise specified.
Date Code
Part Number
bel
0.40(10.16)
Max
0.130(3.30)
0.560
(14.22)
Max
0.920 (23.37)
Max
Primary
Inductance
OCL
(mH) Min
Turns Ratio
+/- 2%
Coil
B
Coil A & B
22
22
22
22
22
22
Part
Number
Coil
A
0559-6200-00
0559-6200-01
0559-6200-02
0559-6200-03
0559-6200-04
0559-6200-05
1:2.5
1:2
1:1
1:1.853
1:1.8
1:1
1:2.5
1:2
1:1
1:1.853
1:1.8
1:2
Leakage
Inductance
L
L
(
H) Max
Coil A
Coil B
Interwinding
Capacitance
(pF) Max
Coil A & B
100
100
100
100
100
100
40
15
5
15
15
15
40
15
5
15
15
5
Coil A
110
80
40
80
140
40
Coil B
CD
primary
(pF) Max
110
80
40
80
140
80
Coil A
2.5
2.3
2.4
2.5
2.5
2.4
Coil B
2.5
2.3
2.4
2.5
2.5
2.3
Coil A
5.8
4.0
2.4
4.3
4.2
2.4
Secondary
Primary
DCR (ohms)
+/- 25%
Coil B
5.8
4.0
2.4
4.3
4.2
4.0
Primary Inductance, Leakage Inductance, and Interwinding Capacitance are measured at 10KHz, 20mV.
Bel offers a line of ISDN transformers available in a
dual through hole cost effective packaging. Single
through hole and dual Surface Mount components
also available.
* High Pot 2000 Vrms.
* Excellent Longitudinal Balance.
* Single units also available for
design flexibility.
Pri
Sec
16
15
14
Coil
A
1
2
3
4
13
12
9
DUAL
8
11
10
Coil
B
6
7
5
S
C
H
E
M
A
T
I
C
ISDN TRANSFORMERS
Through Hole - Dual Package
TM0032
ELECTRICALS
@ 25
O
C.
T301
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