defining a degree of excellence
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
T406
All dimensions are in inches(mm).
The dimension tolerance is +/- 0.01(0.25)
unless otherwise specified.
Suitable for modem speeds up to:
Reflects 600 ohm at Pri with R
Load
D.C. Resistance, 20
o
C, +/- 10%, Pri
D.C. Resistance, 20
o
C, +/- 10%, Sec
Frequency Response, 100 to 4000Hz
Insertion Loss at 1KHz, 20
o
C
Return Loss vs 600 ohms at 1KHz
Direct Current
Dielectric Test Pri-Sec, Pri to core
Turns Ratio (Pri-Sec) 1KHz, +/- 1%
Longitudinal Balance 60 to 1000Hz
Longitudinal Balance 1000 to 4000Hz
Total Harmonic Distortion 600Hz @ -10dBm
SPECIFICATIONS
Kb/s
ohms
ohms
ohms
dB
dB
dB
--
VAC
--
dB
dB
dB
UNITS
PART
NUMBER
0574-1000-15
0574-1000-16
100
Hz
-70
-76
Ref
-10 dBm
-10 dBm
600
Hz
-93
-94
150
Hz
-77
-81
200
Hz
-81
-84
250
Hz
-84
-86
300
Hz
-87
-88
TYPICAL DISTORTION FIGURES (T.H.D.)
56
340
120
145
+/- 0.2
2.5 Max
40 Typ
None
1250
1:1
70 Min
60 Min
- 86 Max
"-16"
Frequency (Hz)
Frequency Response(dB)
-0.5
0.5
0.3
0.1
-0.1
-0.3
0
"-15"
1000
4000
100
10
TYPICAL FREQUENCY RESPONSE
Pin 5 is not connected.
Transformer can be
supplied without this
pin if desired.
Primary
1
3
6
4
5
Secondary
ELECTRICALS
SCHEMATIC
Date Code
Part No.
0.650
(16.5)
Max
4
5
6
3
1
bel
0.650(16.5)
Max
MECHANICALS
0.500
(12.7)
Max
0.084(2.13)
Min
0.300(7.6)
[0.150" Pin to Pin]
0.023(0.6)
Diameter
0.500(12.7)
TM0054
V.34 MODEM TRANSFORMERS
0574-1000-15 and 0574-1000-16
