Filters for Communication Lines
ISDN Systems
Series/Type:
B84312
Date: January 2004
©
EPCOS AG 2004. Reproduction, publication and dissemination of this data sheet, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
Purchase orders are subject to the General Conditions for the Supply of Products and Services of the Electrical
and Electronics Industry recommended by the ZVEI (German Electrical and Electronic Manufacturers' Associ-
ation), unless otherwise agreed.
Filters for communication lines
ISDN systems
B84312
For ISDN-Interfaces S
0
, S
2
, U
P0
and U
2
plus Siemens Hicom installations
Stopband attenuation up to 40 GHz
Features
Use of coaxial feed-through capacitors on input and output
Single or current-balanced chokes depending on requirement
Insertion loss to CISPR 17
Installation
Single filters are attached straight to the shielding wall. Larger numbers can be housed in filter
cabinets or boxes. Various models and the matching flexible connector fittings are available.
Overview of ISDN systems and suitable filters
System Standard
Number Transmission Focal
of pairs rate
frequency
f
test
2
2.048 Mbit/s
Filter
Z
L
Filter
band
(Ordering code)
width
(5 x f
test
)
Ω
1.024 MHz 5.12 MHz 120 B84312C0112E001
S
2
and/or
PCM 30
S
0
ISDN,
2B+D
U
P0
ISDN,
2B+D
U
2B1Q
ISDN,
2B+D
U
K0
ISDN,
2B+D
U
200
1B+D
CCITT,
G.703
CCITT,
I.430
ETS300012
ZVEI
2
144 kbit/s
96 kHz
480 kHz
85... B84312C0110E001
160
100 B84312C0114B001
1
ANSI
1
304 kbit/s
(152 kbit/s
in each
direction)
160 kbit/s
192 kHz
960 kHz
40 kHz
200 kHz
135 B84312C0060B001
T1.601-1988
FTZ 1
1
TR 220
Interface for
Siemens
Hicom
1
160 kbit/s
60 kHz
300 kHz
150 B84312C0060B001
160 kbit/s
(80 kbit/s
in each
direction)
128 kHz
640 kHz
130 B84312C0114B001
2
Filters for communication lines
ISDN systems
B84312
General technical data
Rated voltage
Rated voltage
Rated frequency
Rated current
Line impedance
Test voltage
Maximum DC resistance
Permissible ambient
temperature
Climatic category
(EN 60068-1)
Approx. weight
Characteristics and ordering codes
V
R,AC
V
100
42
42
42
V
R,DC
V
100
80
80
80
f
R
MHz
0 ... 0.3
0 ... 4
0 ... 4
0 ... 10
Z
L
Ω
150
100
100
50
R
max
Ω
2
4.2
4.2
1
1
1
2
2
B84312C0060B001
B84312C0114B001
B84312C0110E001
B84312C0112E001
Number of
pairs
Ordering code
V
R,AC
42 and 100
V
R,DC
80 and 100
f
R
I
R
Z
L
V
test
R
max
T
A
See characteristics
100
See characteristics
250 VDC, 2 s
250 VDC, 2 s
See characteristics
25/+40
25/085/56
560
g
°C
25
°C/+85 °C/56
days damp
heat test
Line/line
Line/case
Per line
V
V
Pass bandwidth at Z
L
mA Referred to +40
°C
ambient
temperature
3
Filters for communication lines
ISDN systems
Insertion loss
α
e
in passband
(typical)
B84312C0060B001
B84312
Symmetrical measurement circuit
with Z
L
= 150
Ω
B84312C0110E001, ...C0114B001
Symmetrical measurement circuit
with Z
L
= 100
Ω
4
Filters for communication lines
ISDN systems
B84312
B84312C0112E001
Symmetrical measurement circuit
with Z
L
= 50
Ω
5
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