Murata
Manufacturing Co., Ltd.
Cat.No.C31E-9
On-Board Type (DC) EMI Suppression Filters (EMIFILr)
EMI
SUPPRESSION
FILTERS
Murata EMC Solutions : http://www.murata.com/emc/
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 specificaions before ordering.
!
Note
C31E9.pdf 03.3.12
Recycled Paper
CONTENTS
!
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.
Selection Guide of EMI Filters
2
Products Guide / Effective Frequency Range
3
Outlines of EMI Suppression Filter (EMIFILr) for DC Line
6
Chip Ferrite Beads
Part Numbering / Impedance Map / BLM Series Line Up
12
BLM03A/15A/18A/21A/31A/41A
18
For GHz Range Noise Suppression BLM18H/18E
53
BLM15B/18B/21B/31B
27
Array Type BLA2AA/2AB/31A/31B
60
BLM18R/21R
41
BLM18P/21P/31P/41P
45
Chip EMIFILr
Part Numbering
66
Capacitor Type NFM18C/21C/3DC/41C
70
LC Combined Monolithic Type NFL18ST/18SP/21SP
81
Capacitor Array NFA31C
74
LC Combined Winding Type NFW31S
84
RC Combined Type NFR21G
75
LC Combined Type for Large Current NFE31P/61P/61H
86
RC Combined Array Type NFA31G
79
For Large Current NFM18P/21P/3DP/41P
89
Chip EMIGUARDr (EMIFILr
with Varistor Function
)
Part Numbering
93
VFM41R
94
Chip Common Mode Choke Coils
Part Numbering
96
Film Type DLP11S/DLP31S
97
Winding Type DLW21S/DLW21H/DLW31S
101
Film Type Array DLP31D
99
Winding Type for Large Current DLW5AH/DLW5BS
104
Monolithic Type DLM2HG
100
Lead Type EMI Suppression Filters (EMIFILr)
Ferrite Beads Inductors
Part Numbering
Block Type EMIFILr
BL01/BL02/BL03
105
BNX
125
Disc Type EMIFILr
Part Numbering
Common Mode Choke Coils
Part Numbering
DSp6/Broad Band DSp9N/Heavy-duty Type DSp9H
109
PLT09H
127
EMIGUARDr (EMIFILr with Varistor Function)
Part Numbering
VFR3V/VFS6V/VFS9V
117
Microwave Absorbers
Part Numbering
129
EA10/EA20/EA21
130
!Caution / Notice
132
Soldering and Mounting
134
Packaging
143
Chip EMI Suppression Filter Design Kits
147
Outlines of Major Noise Regulation Standards
152
Noise Suppression Principles by DC EMIFILr
157
Murata EMI Filter Selection Simulator
161
EMIFILr, EMIGUARDr, "EMIFIL" and "EMIGUARD" in this catalog are
the trademarks of Murata Manufacturing Co., Ltd.
1
2
3
4
5
6
1
2
3
4
5
6
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 specificaions before ordering.
!
Note
C31E9.pdf 03.3.12
Selection Guide of EMI Filters
!
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.
Start
Ground Condition
Ground Condition
Signal Freq. and Noise
DC Power Line
Headphone Line
Poor
Good
Poor
Good
Separate
Mixed
High Speed Signal Line
General Signal Line
Type of Circuit
Arrays
Common Mode Choke Coils
Combined LC T Filter
Capacitor Array
Capacitor Type
Capacitor Type
Combined LC T Filter
Combined LC Filter
Common Mode
Choke Coils
3-terminal Capacitors
Chip Ferrite Beads
3-terminal Capacitors
Chip Ferrite Beads
3-terminal Capacitors
Chip Ferrite Beads
Combined LC T Filter
Arrays
Common Mode Choke Coils
Arrays
Combined RC Filter
Combined RC Array
1008
DLM2HG
600
0201
BLM03A
10120
0603
BLM18P
0.53A
0805
BLM21P
1.56A
0603
NFM18P
2A
0805
NFM21P
24A
0402
BLM15A
101000
0603
NFM18C
2222000pF
0805
NFM21C
2222000pF
0402
BLM15B
51000
0603
BLM18B
52500
0603
NFL18ST
100500MHz
0504
DLP11S
90200
1206
DLP31S
120550
0603
NFL18SP
150500MHz
1206
BLM31P
1.56A
1806
BLM41P
16A
1806
NFM41P
2A
1206
NFE31P
6A
2706
NFE61P
2A
0603
BLM18A/R
1201000
0603
BLM18HG/HK/EG
1001000
0805
BLM21A/R
1201000
1205
NFM3DC
2222000pF
1206
NFE31P
222200pF
2706
NFE61P
334700pF
0804
BLA2AA
1201000
1206
NFA31C
2222000pF
0603
BLM18HD/HB
1201000
0805
BLM21B
52700
0804
BLA2AB
101000
1206
BLA31B
1201000
0805
DLW21S
67370
0805
DLW21H
67180
1206
DLW31S
902200
2020/2014
DLW5BS(AH)
1904000
0805
NFL21S
20500MHz
1206
NFW31S
10500MHz
0805
NFR21G
22100
10100pF
2020/2014
DLW5BS(AH)
0.25A
1904000
1206
BLA31A
301000
1206
DLP31D
90440
1206
NFA31G
6.8100
10100pF
Impedance is typical value at 100MHz.
High Current EMI Filters
Standard EMI Filters
EMI Filters for High Speed Signal Lines
Dimensions in inches
2
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 specificaions before ordering.
!
Note
C31E9.pdf 03.3.12
Products Guide/Effective Frequency Range
!
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.
1.6
0.8
2.0
1.25
3.2
1.6
3.2
1.6
4.5
1.6
1.6
0.8
2.0
1.25
1.6
0.8
2.0
1.25
3.2
1.6
3.2
1.6
1.6
0.8
1.6
0.8
1.6
0.8
1.6
0.8
2.0
1.25
2.0
1.0
3.2
1.6
4.5
1.6
0.6
0.3
1.0
0.5
1.0
0.5
1.6
0.8
Continued on the following page.
2.0
1.0
1.6
0.8
0603
0805
0201
0603
0805
1206
1806
1206
0402
0603
0805
1206
1206
0603
0805
1206
1806
0603
0603
0603
0603
0402
0804
0804
0603
BLM18R
BLM21R
BLM03A
BLM18A
BLM21A
BLM31A
BLM41A
BLM15B
BLM18B
BLM21B
BLM31B
BLM18P
BLM21P
BLM31P
BLM41P
BLM18HG
BLM18HD
BLM18EG
BLA31B
(4 circuits array)
BLA31A
(4 circuits array)
BLM18HB
BLM15A
BLA2AB
(4 circuits array)
BLA2AA
(4 circuits array)
BLM18HK
For Digital
Interfaces
Standard
For High
Speed Signals
For High
Current
For GHz Range
Noise Suppression
Inductor
Type
Type
Series
Dimensions
(mm)
EIA Code
10kHz 100kHz 1MHz 10MHz100MHz 1GHz 10GHz
Effective Frequency Range
Product Guide
3
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 specificaions before ordering.
!
Note
C31E9.pdf 03.3.12
Products Guide/Effective Frequency Range
!
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.
1.25
3.2
4.5
1.6
1.6
1.25
2.0
4.5
1.6
4.5
1.6
3.2
1.6
3.2
1.6
2.0
1.25
3.2
1.6
6.8
1.6
1.25
2.0
1.25
2.0
3.2
1.25
1.6
0.8
1.6
0.8
1.6
0.8
1.6
0.8
2.0
1.2
2.0
1.2
3.2
1.6
3.2
1.6
3.2
1.6
5.0
5.0
(3.6)
3.2
1.25
1.0
Continued from the preceding page.
Continued on the following page.
2.5
2.0
Type
Capacitor
Type
Series
Dimensions
(mm)
EIA Code
10kHz 100kHz 1MHz 10MHz100MHz 1GHz 10GHz
Effective Frequency Range
0805
1205
1806
1206
0805
0805
1206
1206
0805
1205
1806
1206
2706
1806
1206
1206
1008
0805
1206
2020
(2014)
0603
0603
0603
0603
0504
0805
Standard
Type
For Signal
Lines
For High
Current
T Filter for
High Current
With Varistor
Function
Common Mode
Choke Coils
NFM21C
NFM3DC
NFM41C
NFL21S
NFR21G
NFW31S
NFM21P
NFM18P
NFM3DP
NFM41P
NFE31P
NFE61P(H)
VFM41R
DLP31D
DLP31S
DLM2HG
DLW21S
DLW31S
NFA31G
(4 circuits array)
DLW5BS
(DLW5AH)
NFA31C
(4 circuits array)
NFM18C
NFL18ST
NFL18SP
DLP11S
DLW21H
4
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 specificaions before ordering.
!
Note
C31E9.pdf 03.3.12
PDF 
ZIP