This is the PDF file of catalog No.C31E-6
C31E6.pdf 01.5.29
On-Board Type (DC) EMI Suppression Filters(EMIFILr)
Chip EMIFILr for Large Current NFM21P/NFM3DP/NFM41P/NFM55P Series
NFM21P Series
NFM21P is 3 terminal structure component. This product
can be applied to large current DC power lines.
NFM21P is suitable for noise suppression of DC power
lines where relatively operates large current.
0.3±0.2
1.25±0.1
s
Features
1. The rated current of 4A is suitable for IC's
individual power line.
2. Small dimension enables higher density packaging.
NFM21P is much smaller size.(2.0x1.25x0.85mm)
3. Murata's original internal electrode structure design
which realizes excellent EMI suppression effect from
low frequency to high frequency.
Capacitance
(pF)
100000 +20%,-20%
220000 +20%,-20%
470000 +20%,-20%
1000000 +20%,-20%
1000000 +80%,-20%
Rated Voltage
(Vdc)
25
16
16
10
16
0.85±0.1
NFM21P
0.6±0.2
2.0±0.2
(in mm)
Part Number
NFM21PC104R1E3
NFM21PC224R1C3
NFM21PC474R1C3
NFM21PC105B1A3
NFM21PC105F1C3
Rated Current
(A)
2
2
2
4
2
Insulation Resistance
(M ohm)
1000 min.
1000 min.
1000 min.
500 min.
500 min.
Operating Temperature Range
(°C)
-55 to 125
-55 to 125
-55 to 125
-40 to 85
-40 to 85
11
s
Equivalent Cirucit
s
Insertion Loss Characteristics
NFM21P
0
20
Insertion Loss (dB)
0.1µF(104R)
0.22µF(224R)
40
Input
Output
60
0.47µF(474R)
80
1µF(105F)
1µF(105B)
100
1
10
100
Frequency (MHz)
1000 2000
* no polarity.
GND
87
This is the PDF file of catalog No.C31E-6
C31E6.pdf 01.5.29
NFM3DP Series
The chip solid "EMIFIL" NFM3DP is a chip type 3-terminal
capacitor with high rated current of 2A. This series is
suited for noise suppression in DC power supply lines of
digital instruments.
0.7±0.2
1.1±0.3
1.1±0.3
s
Features
1. Large rated current (2A) and low voltage drop due to
a small DC resistance (0.05ohm) are suitable for the
application in DC power line.
2. High electrostatic capacitance and remarkable high
frequency performance are effective for the immunity
against the surge noise and the pulse noise.
(1)
3.2±0.2
(2)
1.25±0.2
(3)
in mm
(2)
NFM3DP
s
Applications
• Personal computers, Word processors and Peripherals
• Telephones, PPCs, Communication equipments, etc.
• Digital TVs, VCRs
• Telecommunication equipment
Capacitance
(pF)
22000 +20%,-20%
Rated Voltage
(Vdc)
50
Rated Current
(A)
2
Insulation Resistance
(M ohm)
1000 min.
Operating Temperature Range
(°C)
-55 to 85
11
Part Number
NFM3DPC223R1H2
s
Equivalent Cirucit
s
Insertion Loss Characteristics
NFM3DP
0
20
Insertion Loss (dB)
Input
Output
40
* no polarity.
GND
60
80
100
0.1
0.5
1
5
10
Frequency (MHz)
50
100
500
1000
88
This is the PDF file of catalog No.C31E-6
C31E6.pdf 01.5.29
NFM41P Series
Chip solid "EMIFIL" NFM41P are 3 terminal structure SMT
components. These components are able to be applied to
large current DC power lines. NFM41P are suitable in
noise suppression DC lines where relatively large
currents operate.
Using base metal to the electrode.
q
1.0±0.2
1.5±0.3
4.5±0.3
r
1.6±0.3
e
0.1min.
s
Features
1. Large rated current (2A) and low voltage drop due to
a small DC resistance (0.04ohm) are suitable for the
application in DC power line.
2. High electrostatic capacitance and remarkable high
frequency performance are effective for the immunity
against the surge noise and the pulse noise.
NFM41P
w
0.4±0.3
(in mm)
s
Applications
• Personal computers, Word processors and Peripherals
• Telephones, PPCs, Communication equipments, etc.
• Digital TVs, VCRs
• Telecommunication equipment
Capacitance
(pF)
200000 +80%,-20%
Rated Voltage
(Vdc)
50
Rated Current
(A)
2
Insulation Resistance
(M ohm)
1000 min.
Operating Temperature Range
(°C)
-55 to 85
11
Part Number
NFM41PC204F1H3
s
Equivalent Cirucit
s
Insertion Loss Characteristics
NFM41P
0
20
Insertion Loss (dB)
40
Input
Output
60
* no polarity.
GND
80
100
1
5
10
50
Frequency (MHz)
100
500
1000
89
This is the PDF file of catalog No.C31E-6
C31E6.pdf 01.5.29
NFM55P Series
The chip solid "EMIFIL" NFM55P is a chip type 3-terminal
capacitor with high rated current of 6A. This series is
suited for noise suppression in DC power lines where
high rated current and large capacitance is required.
2.2±0.3
+0.3
1.7 -0.2
5.7±0.3
(2)
+0.5
4.2 -0.3
5.0±0.3
s
Features
1. Large rated current (6A) and low voltage drop due to
a small DC resistance (0.01ohm) are suitable for the
application in DC power line.
2. High electrostatic capacitance and remarkable high
frequency performance are effective for the immunity
against the surge noise and the pulse noise.
3. Only reflow soldering should be applied.
(1)
(3)
NFM55P
(2)
in mm
s
Applications
• Personal computers, Word processors and Peripherals
• Telephones, PPCs, Communication equipments, etc.
• Digital TVs, VCRs
• Telecommunication equipment
11
Part Number
NFM55PC155F1H4
Capacitance
(pF)
1500000 +80%,-20%
Rated Voltage
(Vdc)
50
Rated Current
(A)
6
Insulation Resistance
(M ohm)
100 min.
Operating Temperature Range
(°C)
-55 to 85
s
Equivalent Cirucit
s
Insertion Loss Characteristics
NFM55P
0
20
Insertion Loss (dB)
Input
Output
40
* no polarity.
GND
60
80
100
0.1
0.5
1
5
10
50
100
500
1000
Frequency (MHz)
90
This is the PDF file of catalog No.C31E-6
C31E6.pdf 01.5.29
NFM/NFR/NFL Series Notice (Soldering and Mounting)
1. Standard Land Pattern Dimensions
The capacitor type chip EMI suppression filters (NFp
series) suppress noise by conducting the high-frequency
noise element to ground. Therefore, to obtain maximum
performance from these filters, the ground pattern should
be made as large as possible during the PCB design
stage. As shown in the right, one side of the PCB is used
for chip mounting, and the other is used for grounding.
Small diameter feedthrough holes are then used to
connect the grounds on each side of the PCB. This
reduces the high-frequency impedance of the grounding
and maximizes the filter's performance. Please contact us
if using thinner land pad than 18µm for NFM55P.
For Reflow Soldering
Chip mounting side
Small diameter thru hole
φ0.4-φ0.6
Land
Solder Resist
Back side
Ground pattern
d
a
b
c
Connect to ground pattern
of mounting side
Part Number
a
NFM21C/NFM21P
NFR21G/NFL21S
NFM3DC
NFM3DP
NFM41C
NFM41P
NFM55P
0.8
1.4
2.0
Size (mm)
b
1.4
2.5
3.5
c
2.6
4.4
6.0
d
0.6
1.0
1.2
Small diameter thru hole
φ1.0-φ2.0
11
2.0
4.7
6.7
5.0
6.4
(in mm)
• NFM21C/21P, NFR21G, NFL21S and NFM55P are specially
adapted for reflow soldering.
For Flow Soldering
Chip mounting side
Small diameter thru hole
φ0.4-φ0.6
Ground pattern
Back side
0.6
e
f
g
a
b
c
d
Connect to ground pattern
of mounting side
Part Number
a
NFM3DC
NFM3DP
NFM41C
NFM41P
b
Size (mm)
c
d
e
f
g
1.0 1.4 2.5 4.4 1.0 2.0 2.4
1.5 2.0 3.5 6.0 1.2 2.6 3.0
Continued on the following page.
1
g
91
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