(for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
!Note
•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,thereareno space for detailed specifications. Therefore, please approve our productsheet for product specificaions approval sheet for product specifications before ordering.
This catalog has only typical specifications because you is requested to approve our product specifications or to transact the approval specifications or transact the before ordering.
C31E9.pdf 03.3.12
CONTENTS
Selection Guide of EMI Filters
Products Guide / Effective Frequency Range
EMIFILr, EMIGUARDr, "EMIFIL" and "EMIGUARD" in this catalog are
the trademarks of Murata Manufacturing Co., Ltd.
2
3
6
Outlines of EMI Suppression Filter (EMIFILr) for DC Line
1
Chip Ferrite Beads
Part Numbering / Impedance Map / BLM Series Line Up
BLM03A/15A/18A/21A/31A/41A
BLM15B/18B/21B/31B
BLM18R/21R
BLM18P/21P/31P/41P
18
27
41
45
For GHz Range Noise Suppression BLM18H/18E
Array Type BLA2AA/2AB/31A/31B
12
53
60
1
2
Chip EMIFILr
Part Numbering
Capacitor Type NFM18C/21C/3DC/41C
Capacitor Array NFA31C
RC Combined Type NFR21G
RC Combined Array Type NFA31G
70
74
75
79
LC Combined Monolithic Type NFL18ST/18SP/21SP
LC Combined Winding Type NFW31S
LC Combined Type for Large Current NFE31P/61P/61H
For Large Current NFM18P/21P/3DP/41P
66
81
84
86
89
2
3
Chip EMIGUARDr (EMIFILr
with Varistor Function
)
Part Numbering
VFM41R
94
93
3
4
Chip Common Mode Choke Coils
Part Numbering
Film Type DLP11S/DLP31S
Film Type Array DLP31D
Monolithic Type DLM2HG
97
99
100
Winding Type DLW21S/DLW21H/DLW31S
Winding Type for Large Current DLW5AH/DLW5BS
96
101
104
4
5
Lead Type EMI Suppression Filters (EMIFILr)
Ferrite Beads Inductors
Part Numbering
Block Type EMIFILr
BL01/BL02/BL03
105
BNX
Disc Type EMIFILr
Part Numbering
Common Mode Choke Coils
DSp6/Broad Band DSp9N/Heavy-duty Type DSp9H
109
PLT09H
EMIGUARDr (EMIFILr with Varistor Function)
Part Numbering
VFR3V/VFS6V/VFS9V
117
125
Part Numbering
5
127
6
6
Microwave Absorbers
Part Numbering
EA10/EA20/EA21
!Caution
/ Notice
Soldering and Mounting
Packaging
Chip EMI Suppression Filter Design Kits
Outlines of Major Noise Regulation Standards
Noise Suppression Principles by DC EMIFILr
Murata EMI Filter Selection Simulator
130
132
134
143
147
152
157
161
129
Recycled Paper
Please read rating and
!CAUTION
(for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
!Note
•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,thereareno space for detailed specifications. Therefore, please approve our productsheet for product specificaions approval sheet for product specifications before ordering.
This catalog has only typical specifications because you is requested to approve our product specifications or to transact the approval specifications or transact the before ordering.
C31E9.pdf 03.3.12
Selection Guide of EMI Filters
Start
Type of Circuit
Headphone Line
Common Mode Choke Coils
1008
DLM2HG
600Ω
DC Power Line
General Signal Line
High Speed Signal Line
Ground Condition
Ground Condition
Signal Freq. and Noise
Poor
Good
Poor
Good
Separate
Mixed
Chip Ferrite Beads
3-terminal Capacitors
Capacitor Type
Chip Ferrite Beads
3-terminal Capacitors
Capacitor Type
Chip Ferrite Beads
3-terminal Capacitors
Combined LC T Filter
Common Mode
Choke Coils
0603
0603
0201
0603
0402
0603
0504
BLM18P
0.5–3A
0805
NFM18P
2A
0805
BLM03A
10–120Ω
0402
NFM18C
22–22000pF
0805
BLM15B
5–1000Ω
0603
NFL18ST
100–500MHz
Combined LC
Filter
DLP11S
90–200Ω
1206
0603
BLM21P
1.5–6A
1206
NFM21P
2–4A
1806
BLM15A
10–1000Ω
0603
NFM21C
22–22000pF
1205
BLM18B
5–2500Ω
0603
DLP31S
NFL18SP
150–500MHz
0805
120–550Ω
0805
BLM31P
1.5–6A
1806
NFM41P
2A
Combined LC T Filter
BLM18A/R
120–1000Ω
0603
NFM3DC
22–22000pF
Capacitor Array
BLM18HD/HB
120–1000Ω
0805
DLW21S
NFL21S
20–500MHz
1206
67–370Ω
0805
1206
1206
BLM41P
1–6A
BLM18HG/HK/EG
NFE31P
6A
2706
BLM21B
NFA31C
22–22000pF
Combined LC T Filter
DLW21H
NFW31S
10–500MHz
Combined RC Filter
100–1000Ω
0805
5–2700Ω
Arrays
67–180Ω
1206
0804
BLM21A/R
NFE61P
2A
Common Mode Choke Coils
1206
0805
DLW31S
90–2200Ω
2020/2014
120–1000Ω
Arrays
BLA2AB
NFE31P
22–2200pF
2706
10–1000Ω
1206
NFR21G
22–100Ω
10–100pF
Combined RC Array
0804
2020/2014
DLW5BS(AH)
190–4000Ω
Arrays
BLA2AA
120–1000Ω
BLA31B
NFE61P
120–1000Ω
1206
DLW5BS(AH)
0.2–5A
190–4000Ω
1206
33–4700pF
NFA31G
6.8–100Ω
10–100pF
1206
BLA31A
30–1000Ω
DLP31D
90–440Ω
Dimensions in inches
High Current EMI Filters
Standard EMI Filters
EMI Filters for High Speed Signal Lines
Impedance is typical value at 100MHz.
2
Please read rating and
!CAUTION
(for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
!Note
•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,thereareno space for detailed specifications. Therefore, please approve our productsheet for product specificaions approval sheet for product specifications before ordering.
This catalog has only typical specifications because you is requested to approve our product specifications or to transact the approval specifications or transact the before ordering.
C31E9.pdf 03.3.12
Products Guide/Effective Frequency Range
Product Guide
Type
Inductor
Type
For Digital
Interfaces
Series
BLM18R
BLM21R
Standard
BLM03A
BLM15A
BLM18A
BLM21A
BLM31A
BLM41A
BLA2AA
(4 circuits array)
BLA31A
(4 circuits array)
For High
Speed Signals
BLM15B
BLM18B
BLM21B
BLM31B
BLA2AB
(4 circuits array)
BLA31B
(4 circuits array)
For High
Current
BLM18P
BLM21P
BLM31P
BLM41P
For GHz Range
Noise Suppression
BLM18HG
BLM18HB
BLM18HD
Dimensions
(mm)
1.6
0.8
Effective Frequency Range
10kHz 100kHz 1MHz 10MHz100MHz 1GHz 10GHz
EIA Code
0603
0805
0201
0402
0603
0805
1206
1806
0804
1206
0402
0603
0805
1206
0804
1206
0603
0805
1206
1806
0603
0603
0603
2.0
1.25
0.6
0.3
1.0
0.5
1.6
0.8
2.0
1.25
3.2
1.6
4.5
1.6
2.0
1.0
3.2
1.6
1.0
0.5
1.6
0.8
2.0
1.25
3.2
1.6
2.0
1.0
3.2
1.6
1.6
0.8
2.0
1.25
3.2
1.6
4.5
1.6
1.6
0.8
1.6
0.8
1.6
0.8
BLM18HK
BLM18EG
1.6
0.8
0603
0603
Continued on the following page.
1.6
0.8
3
Please read rating and
!CAUTION
(for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
!Note
•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,thereareno space for detailed specifications. Therefore, please approve our productsheet for product specificaions approval sheet for product specifications before ordering.
This catalog has only typical specifications because you is requested to approve our product specifications or to transact the approval specifications or transact the before ordering.
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