defining a degree of excellence
V.34 SRF. MNT. MODEM TRANSFORMERS
S574-1000-17 and S574-1000-18
TM0053
MECHANICALS
SCHEMATIC
0.700(17.78)
0.575(14.61)
Pin 2
Max
Pin 2
10
2
Max
10
0.550
(13.97)
Max
10
6
Primary
Secondary
0.550
(13.97)
Max
bel
D.C.
4
6
D.C.
Part No.
4
Part No.
4
SUGGESTED PC
BOARD LAYOUT
6
S574-1000-18
S574-1000-17
0.73
(18.54)
0.080
(2.03)
0.420
(10.67)
Max
0.420
(10.67)
Max
0.100
(2.54)
0.050
(1.3)
0.697(17.70)
0.697(17.70)
ELECTRICALS
TYPICAL FREQUENCY RESPONSE
0.5
SPECIFICATIONS
UNITS
0.3
"-17"
"-18"
0.1
0
Suitable for modem speeds up to:
Reflects 600 ohm at Pri with RLoad
D.C. Resistance, 20oC, +/- 10%, Pri
D.C. Resistance, 20oC, +/- 10%, Sec
Frequency Response, 100 to 4000Hz
Insertion Loss at 1KHz, 20oC
Return Loss vs 600 ohms at 1KHz
Direct Current
Dielectric Test Pri-Sec, Pri to core
Direct Current
V.34
340
120
145
--
-0.1
ohms
ohms
ohms
dB
dB
dB
--
VAC
--
--
-0.3
-0.5
10
1000
Frequency (Hz)
100
4000
+/- 0.2
2.5 Max
37 Typ
None
1250
None
TYPICAL RETURN LOSS VERSUS 600 Ω
50
"-17"
40
"-18"
30
Turns Ratio (Pri-Sec) 1KHz, +/- 1%
Longitudinal Balance 60 to 1000Hz
Longitudinal Balance 1000 to 4000Hz
Total Harmonic Distortion 600Hz @ -10dBm
1:1
70 Min
60 Min
- 86 Max
20
10
dB
dB
dB
0
4000
TYPICAL DISTORTION FIGURES (T.H.D.)
200
1000
Frequency (Hz)
PART
Ref
100 150 200 250 300 600
NUMBER
S574-1000-17 -10 dBm
S574-1000-18 -10 dBm
All dimensions are in inches(mm).
The dimension tolerance is +/- 0.01(0.25)
unless otherwise specified.
Hz Hz
Hz
Hz
Hz
Hz
-72 -80 -83
-59 -66 -72
-86 -89 -93
-75 -78 -88
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
T407
