84
2
!Note • Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
• This catalog has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.
On-Board Type (DC) EMI Suppression Filters (EMIFILr)
Chip EMIFILr RC Combined Type NFR21G Series
The NFR21G series comprises high performance EMI
suppression filters which can suppress distortion of
waveform. Various items are to be used, considering
circuit impedance and noise condition.
■ Features
1. Murata's original inner design realizes small and
low profile of 2.0x1.25x0.5mm.
2. Distributed constant circuit realizes smooth change
of impedance which prevents reflection of signal
and distortion of wave shape.
3. The NFR21G series is effective in a line where
ground is not stable, because the resistance
element in the filter absorbs noise and returns it
to ground line.
4. The NFR21G series has no polarity so it can be
used in dual direction transport lines.
5. The NFR21G series has various lineups of resistance
(22 to 100ohm) and capacitance (10 to 100pF).
■ Applications
Interface lines and clock lines where signals are tend
to be distorted
1.0±0.35
0.5±0.2
2.0±0.2
0.95±0.35
1.25±0.2
(Bottom View)
(Top View)
(1)
(2)
(2)
(3)
1.0 max.
0.3±0.2
0.25
0.3±0.2
0.25
(in mm)
Part Number Capacitance
(pF) Resistance
(ohm) Rated Current
(mA) Rated Voltage
(Vdc) Insulation Resistance
(M ohm)
Operating
Temperature Range
(°C)
NFR21GD1002202 10 +20%,-20% 22 +30%,-30% 50 50 1000 -40 to 85
NFR21GD1004702 10 +20%,-20% 47 +30%,-30% 35 50 1000 -40 to 85
NFR21GD4702202 47 +20%,-20% 22 +30%,-30% 50 50 1000 -40 to 85
NFR21GD4704702 47 +20%,-20% 47 +30%,-30% 35 50 1000 -40 to 85
NFR21GD4706802 47 +20%,-20% 68 +30%,-30% 30 50 1000 -40 to 85
NFR21GD4701012 47 +20%,-20% 100 +30%,-30% 25 50 1000 -40 to 85
NFR21GD1012202 100 +20%,-20% 22 +30%,-30% 50 50 1000 -40 to 85
NFR21GD1014702 100 +20%,-20% 47 +30%,-30% 35 50 1000 -40 to 85
NFR21GD1016802 100 +20%,-20% 68 +30%,-30% 30 50 1000 -40 to 85
NFR21GD1011012 100 +20%,-20% 100 +30%,-30% 25 50 1000 -40 to 85
Number of Circuits : 1
Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this PDF catalog to prevent smoking and/or burning, etc.
This catalog has only typical specifications. Therefore, you are requested to approve our product specifications or to transact the approval sheet for product specifications before ordering.
!Note C31E11.pdf 04.3.8
85
2
!Note • Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
• This catalog has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.
■ Equivalent Circuit
GND
(2)
No polarity
Output (3) (1) Input
■ Insertion Loss Characteristics (Typical)
NFR21GD1002202
NFR21GD1004702
NFR21GD4702202
NFR21GD4704702
NFR21GD4706802
NFR21GD1012202
NFR21GD1014702
NFR21GD1016802
1 10 100 1000
0
10
20
30
40
50
Frequency (MHz)
Insertion Loss (dB)
(50Ω - 150Ω)
NFR21GD1011012
NFR21GD4701012
1 10 100 1000
0
10
20
30
40
50
Frequency (MHz)
Insertion Loss (dB)
(50Ω - 3kΩ)
Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this PDF catalog to prevent smoking and/or burning, etc.
This catalog has only typical specifications. Therefore, you are requested to approve our product specifications or to transact the approval sheet for product specifications before ordering.
!Note C31E11.pdf 04.3.8
