Document
!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, you are requested to approve our product specifications or to transact the approval sheet for product specificaions before ordering.
C31E9.pdf 03.3.12
om EMI Suppression Filters (EMIFILr) On-Board Type c (DC) h S a t e e 4U .
Murata EMC Solutions : http://www.murata.com/emc/
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EMI SUPPRESSION FILTERS
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Cat.No.C31E-9
CAUTION catalog to prevent smoking and/or burning, Pleaseread readrating ratingand and! ! CAUTION(for (forstorage, storage,operating, operating,rating, rating,soldering, soldering,mounting mountingand andhandling) handling)in inthis thisPDF catalog to prevent smoking and/or burning, etc. etc. !Note •Please
specifications. you are requested todetailed approvespecifications. our product specifications or to transact the approval for product before ordering. •This Thiscatalog cataloghas hasonly onlytypical typical specificationsTherefore, because there is no space for Therefore, please approve our productsheet specifications or specificaions transact the approval sheet for product specifications 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
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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
CAUTION catalog to prevent smoking and/or burning, Pleaseread readrating ratingand and! ! CAUTION(for (forstorage, storage,operating, operating,rating, rating,soldering, soldering,mounting mountingand andhandling) handling)in inthis thisPDF catalog to prevent smoking and/or burning, etc. etc. !Note •Please
specifications. you are requested todetailed approvespecifications. our product specifications or to transact the approval for product before ordering. •This Thiscatalog cataloghas hasonly onlytypical typical specificationsTherefore, because there is no space for Therefore, please approve our productsheet specifications or specificaions transact the approval sheet for product specifications 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
6.