Filters for communication lines
Analog systems and control lines
B84312
Filter applications
The following standard filters are designed for the most common applications; customized models
can be produced for differing requirements.
Passband ZL
IR
Application
Circuit No. Series
diagram of
kHz
Ω
A
lines B84312
DC ... 3.4 600 0.1 Standard filters for telephone systems
1
3
2
+0020B***
20 C0020H***
+0090B***
20 C0090H***
DC ... 3.4 600 0.1 Telephone systems for enhanced
requirements (stopband attenuation of
100 dB above 10 kHz )
2
DC ... 50
600 0.1 Filters for telephone systems and
modem cables, conditionally for control
lines with critical signal rise times
1
2
+0040B***
20 C0040H***
DC ...120 150 0.1 Data signals with balanced signal
transmission mode as used
2
2
2
+0050B***
20 C0050H***
+0060B***
20 C0060H***
by modems or interfaces
DC ... 300 150 0.1
2
RS 485 up to 9600 Baud and/or
RS 422 up to 19200 Baud
DC ... 120 100
2
Smoke detectors with serial data
2
2
+0050B***
transmission in bus systems and remote
power feeding, temperature switches,
24 V emergency lighting, DC motors
20 C0050H***
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
3
1
1
24-V emergency lighting, DC motors,
signal and control lines
2
1
3
2
+0050B***
20 C0050H***
+0030B***
20 C0030H***
+0100B***
20 C0100H***
Universal filters for signal and control
lines with up to 1 A
2
Control lines with up to 1 A and
enhanced attenuation requirements
2
+: C = upright installation, F = flat installation
3