CHIP TYPE EMI FILTER ARRAYS [ CNA30 Series ]
a
Features
MARUWA
GENERAL CATALOG
The EMI chip filter in the CNA30 Series is a compound type EMI filter with four built-in 3-terminal capacitors on one chip of 3216 size.
• The structure minimizes the residual inductance, and the self resonant frequency is high, ensuring large insertion loss in the wide
band.
• The common gland electrode built in a chip ensures complete grounding of all lines at the gland on both ends. The filter is de-
signed to control cross talk.
• An optimum constant can be selected from the capacity range of 22-22,000 pF to best suit the frequency.
• Nickel and tin plated barrier terminations offer good solderability and resistance to soldering heat.
•
RoHS Compliant.
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Applications
Noise reduction for DC lines in computers, computer peripheral equipment, digital TV, DVD recorder, cellular telephone,
automotive electronics, printer, FAX, etc.
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Part Number System
CNA
Series
30
Style
R
Temperature characteristics
223
Capacitance
M
M:
20%
–
T
Packing form
T :
Taping
B :
Bulk
M
Termination
Capacitance tolerance
30 : 3.2 1.6
(L) (W)
C : 30ppm/°C
R : 15%
U : –750 120
ppm/°C
M : Ni-Barrier termination
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Dimensions
L
W
T
P
L
1
L
2
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Equivalent circuit
Type
L
W
t
L1
L2
P
GND
GND
(mm)
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Part Number List • Specifications
Part number
Capacitance
Capacitance Rated voltage Rated current
tolerance
IR
DC resistance
Temp. range
CNA30C220M–
CNA30C470M–
CNA30C101M–
CNA30C221M–
CNA30U471M–
CNA30R102M–
CNA30R222M–
CNA30R223M–
M
M
M
M
M
M
M
M
22pF
47pF
100pF
220pF
470pF
1,000pF
2,200pF
22,000pF
20%
50V DC
0.3A DC
10,000M min.
0.3 max.
–55~+125°C
25V DC
: "T" stands for taping package and "B" stands for bulk package.
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Insertion loss (Reference)
CNA30 TYPE
0
100
Insertion loss (dB)
10
20
30
40
22000
50
60
70
0.1
47
22
2200
1000
470
220
1
10
Frequency (MHz)
100
1000
10000
89
EMI FILTERS
CNA30
3.2 0.2 1.6 0.2 0.7 0.2 0.4 0.2 0.8 0.2 0.8 0.1
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