EMI LEADED FILTERS
EMI SUPPRESSION FILTERS
BLOCK FILTERS
BNX002/003/005 Series
ꢀ Minimize the distance between the PC board ground and
USING THE BNX SERIES EFFECTIVELY
the filter’s grounding plate.
The block type filter effectively prevents unwanted reflections
and external noise from entering the equipment circuitry and
power lines by grounding all the high frequency components
which make up the noise.
ꢀ Insert the filter into the PC board up to the terminal roots.
ꢀ Do not externally connect PSG to CG.
To maximize performance, proper grounding is required. To
insure proper grounding, observe the following points:
ꢀ When designing the PC board, use all the available
grounding terminals and arrange the circuit to maximize
the area of the ground pattern.
APPLICATION
TYPICAL INSERTION LOSS CHARACTERISTICS
0
ꢀ Suppression of DC side ripple of the switching
power supply
BNX003-01
20
BNX002-01
40
+5V
BNX002-01
Switching
Power Supply
&
BNX005-01
60
CG
80
ꢀ When BNX002 is not used
100
0.001 0.01
0.1
1
10
100
1000
Frequency (MHz)
High frequency noise,
max. 0.5V, can be seen.
(
)
+5.0Vꢀ
50ꢀs/DIV
0.2V/DIV
ꢀ When BNX002 is used
Noise can be almost
eliminated by BNX002.
(
)
+5.0Vꢀ
50ꢀs/DIV
0.2V/DIV
CG01-I
261
MURATA [ muRata ]
