SMIT-204
Analog Telephony/Modem Couplers
DESCRIPTION
FEATURES
• Suitable for modem speeds up to V.32bis (14.4 kbps)
and may be adaptable for V.34 (33.6 kbps).
The Sumida SMIT-204 is a "Dry" SMT Modem
Isolation Transformer suitable for up to V.32bis
(14.4 kbps) consumer and internet analog
modem applications compliant with Domestic
safety norms. SMIT-204 may be adapted to
analog modems with data rates up to V.34
(33.6kpbs)
• Total Harmonic Distortion rated -86 dB typ. @ 600
Hz, -10 dBm.
• Insertion Loss rated 2.65dB typ. @ 1000 Hz.
• Complies with UL1459 safety norms.
• Reflects 600 Ohms on Primary with 294 Ohms
Secondary Load.
• Very small PCB footprint (19.8 mm x 16.3 mm).
• Thin (PCMCIA) Profile (4.32 mm).
NOMENCLATURE (fig. 1)
• SMT Industry-standard pin configurations.
SUPPLIER NAME
SUPPLIER P/N
(Suffix X= A thru E for pin form)
sumida
C
UL/C-UL APPROVAL
PRODUCT COMPLIANCE
DATE CODE
LOCATES
TERMINAL #1
COUNTRY OF ORIGIN
• UL/C- UL recognized file number: E171120
MECHANICAL DIMENSIONS (fig. 2)
DIMENSIONS: MILLIMETERS [INCHES]
RECOMENDED PCB LAYOUT
4.32 MAX
[0.170]
16.26 MAX
[0.640]
1.35
[0.053]
0.15
[0.005]
1.00
[0.039]
1.10
[0.042]
1.50
4.00
[0.160]
2.54
[0.100]
Nomenclature
1.50
[0.059]
16.52 MAX
[0.650]
19.80
[0.780]
19.80 MAX
[0.780]
Suffix
X=A
Suffix
X=B
Suffix
X=C
Suffix
X=D
2.00
[0.080]
Suffix
X=E
2.00
[[0.079]
TERMINAL CONNECTION
(BOTTOM VIEW)
7
4
PRIMARY
(LINE)
SECONDARY
(MODEM)
NOTE: Routing conductive traces under transformer is not recommended
9
2
Literature number: SMIT-204 ©Copyright 2002, Sumida Corporation All rights reserved. Printed in U.S.A. 8/02
North America
Tel. 1 847 545 6700
Fax. 1 847 545 6720
Singapore
Hong Kong
Tel. 852 2880 6688
Fax. 852 2565 9600
Tel. 32 89 328850
Fax. 32 11 300890
Taiwan
Europe
Japan
Tel. 65 296 3388
Fax. 65 296 3390
Tel. 886 2 2523 6368
Fax. 886 2 2523 6369
Tel. 813 3980 2212
Fax. 813 3980 2213
1
P1
SMIT-204
Analog Telephony/Modem Couplers
Electrical Performance Specifications
Parameters
Conditions
Min
Typ
600
Reflected on Primary
Impedance
Insertion Loss
@ 600 Hz, -10 dBm
-86
@ 150 Hz, -3 dBm
-61
Per IEEE method; @1000 Hz
2.65
200 Hz-4000 Hz
Per 600 Ohm Match (Fig. 3)
Return Loss
Dielectric Breakdown Isolation Safety Standard tested 1 min.
HiPot Voltage
Production methods applied:
Duration
Trip Leakage Current
Frequency Response
200 Hz - 4000 Hz
Longitudinal Balance
Per FCC part 68.310
DC Resistance @ 20°C, ±10%
-76
dB
3.40
dB
25
dB
1000
1250
2
Vrms
Vrms
Sec
µA
200
±0.25
60 Hz -1000 Hz
60
1000 Hz - 4000 Hz
40
dB
dB
Primary winding (Rpri)
Secondary winding (Rsec)
DC current in Primary
Primary to Secondary; ±2%
Turns Ratio
Units
Ohms
294
with load on Secondary
Total Harmonic Distortion
Max
156
145
Ohms
0
mADC
1:1
Turns
Operating temperature
-40
105
°C
Storage temperature
-40
125
°C
260
°C
Soldering temperature
10 Sec. Max
Electrical Performance Specifications (TA = 25°C unless otherwise specified)
600 Ohm MATCH
SCHEMATIC EQUIVALENT
(FIG.3)
(FIG.4)
Typical Transformer Model @ 1.0 Vrms, 1kHz
Primary
RLine= 600Ω
Rpri =156Ω
RLoad= 294Ω
LINE
Lp=4 H
LLeak=0.9 mH
Secondary
RSec=145Ω
Rp=20kΩ
MODEM
Turns Ratio
1:1
Sumida Corporation makes no assertion on warranty that the circuitry and the uses thereof disclosed herein are
non-infringing on any valid US or foreign patents. Sumida assumes no liability as a result of the use of said
specifications and reserves the right to make changes to specifications without notice. Sumida does not authorize
or warrant any Sumida device for use in life support devices and/or systems. Contact your nearest Sumida Sales
Office for the latest specifications.
2
Literature number: SMIT-204 ©Copyright 2001, Sumida Corporation All rights reserved. Printed in U.S.A. 11/01
P1
SMIT-204
Analog Telephony/Modem Couplers
TAPE AND REEL PACKAGING
330.2 Dia.
[13.00]
Top Cover
Tape Thickness
0.051 Max.
[0.002]
5.45 Max.
[0.215]
(FIG.6)
1.75 ± 0.10
[0.069 ± 0.004]
2.00 ± 0.10
[0.079 ± 0.004]
1.50 + 0.10 / -0.00
[0.059 ± 0.004]
4.00 ± 0.10
[0.157 ± 0.004]
Ø 2.00 Min.
[0.079]
0.35 Max.
[0.014]
14.20 ± 0.10
[0.559 ± 0.004]
16.77 ± 0.10
[0.660 ± 0.004]
5.10 Max.
[0.201]
0.30 R Max.
[0.012]
Top Cover
Tape
0.50 R TYP
[0.020]
Embossed Carrier
28.40 ± 0.10
32.00 ± 0.30
[1.118 ± 0.004] [1.260 ± 0.012]
Embossment
24.00 ± 0.10
[0.945 ± 0.004]
20.60 ± 0.10
[0.811 ± 0.004]
User Direction of Feed
0.75 R
[0.030]
Material
Tape
PACKAGING
Contents
1 Reel
0.20 ± 0.05
[0.008 ± 0.002]
#Transformers
500
Literature number: SMIT-204 ©Copyright 2001, Sumida Corporation All rights reserved. Printed in U.S.A. 11/01
3
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SMIT-204
Analog Telephony/Modem Couplers
PERFORMANCE DATA
TOTAL HARMONIC DISTORTION
Typical THD (dB) @ -10 dBm across Frequency (Hz)
-60
-65
-65
-70
-70
-75
-75
-80
-80
-85
-85
-90
-90
-95
-95
-100
100
300
600
1000
2000
Typical THD (dB) @ -3 dBm across Frequency (Hz)
-60
4000
-100
100
300
INSERTION LOSS
3.0
-1.0
2.0
-1.5
1.0
2.0
0
-2.5
-1.0
-3.0
-2.0
-3.5
-3.0
100
300
600
2000
4000
1000
2000
Typical Frequency Response (dB) across Frequency (Hz)
4.0
-0.5
-4.0
1000
FREQUENCY RESPONSE
Typical Insertion Loss (dB) across Frequency (Hz)
0
600
4000
-4.0
100
300
600
1000
2000
4000
RETURN LOSS
Typical Return Loss (dB) across Frequency (Hz)
0
-5
-10
-15
-20
-25
-30
-35
-40
100
300
600
1000
2000
(Measured per 600Ω Match depicted in Fig. 3)
4000
Literature number: SMIT-204 ©Copyright 2001, Sumida Corporation All rights reserved. Printed in U.S.A. 11/01
www.sumida.com
North America
Hong Kong
4
Europe
Tel. 1 847 545 6700
Fax. 1 847 545 6720
Tel. 852 2880 6688
Fax. 852 2565 9600
Tel. 32 89 328850
Fax. 32 11 300890
Singapore
Taiwan
Japan
Tel. 65 296 3388
Fax. 65 296 3390
Tel. 886 2 2523 6368
Fax. 886 2 2523 6369
Tel. 813 3980 2212
Fax. 813 3980 2213
P1