EMI Filters / EMI Suppression

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Power Supply Line Noise Suppression for Home Audio

Digital amplifiers are increasingly popular for home audio applications. In many cases, power is supplied from an AC outlet for home audio, and the conductive noise in the power supply cable is regulated under EMC standards. Therefore, it is necessary to prevent noise from leaking into the power supply line during audio playback. Here is an overview of noise problems in home audio cables and their solutions.

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Types of EMI Filters / EMI Suppression

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Part #

Ferrite Beads 1000 OHM 2A Alternate Sizing Guide Below

BLM31KN102SN1L
Murata Electronics
1: $0.553
176,043In Stock

Mfr. Part #
BLM31KN102SN1L

Mouser Part #
81-BLM31KN102SN1L

Murata Electronics

Ferrite Beads 1000 OHM 2A Alternate Sizing Guide Below

Learn More

Datasheet

176,043In Stock

Cut Tape

$0.553

$0.393

$0.341

$0.305

View

Reel

$0.147

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,500

Ferrite Beads

Ferrite Chip Beads

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

Ferrite Beads 1000 OHM Alternate Sizing Guide Below

BLM21SP102SN1D
Murata Electronics
1: $0.461
218,633In Stock

Mfr. Part #
BLM21SP102SN1D

Mouser Part #
81-BLM21SP102SN1D

Murata Electronics

Ferrite Beads 1000 OHM Alternate Sizing Guide Below

Learn More

Datasheet

218,633In Stock

Cut Tape

$0.461

$0.321

$0.279

$0.249

View

Reel

$0.115

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

Ferrite Beads

Ferrite Chip Beads

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

Ferrite Beads 800 OHM 2.5A Alternate Sizing Guide Below

BLM31KN801SN1L
Murata Electronics
1: $0.568
64,178In Stock

Mfr. Part #
BLM31KN801SN1L

Mouser Part #
81-BLM31KN801SN1L

Murata Electronics

Ferrite Beads 800 OHM 2.5A Alternate Sizing Guide Below

Learn More

Datasheet

64,178In Stock

Cut Tape

$0.568

$0.402

$0.347

$0.31

View

Reel

$0.147

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,500

Ferrite Beads

Ferrite Chip Beads

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

Ferrite Beads 30 OHM Alternate Sizing Guide Below

BLM18SP300SN1D
Murata Electronics
1: $0.368
101,142In Stock

Mfr. Part #
BLM18SP300SN1D

Mouser Part #
81-BLM18SP300SN1D

Murata Electronics

Ferrite Beads 30 OHM Alternate Sizing Guide Below

Learn More

Datasheet

101,142In Stock

Cut Tape

$0.368

$0.258

$0.224

$0.20

View

Reel

$0.089

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

Ferrite Beads

Ferrite Chip Beads

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

EMI Filter Circuits 10.0 UF 50V 20A

BNX026H01L
Murata Electronics
1: $9.61
12,036In Stock
5,200Expected 2026-05-08

Mfr. Part #
BNX026H01L

Mouser Part #
81-BNX026H01L

Murata Electronics

EMI Filter Circuits 10.0 UF 50V 20A

Learn More

Datasheet

12,036In Stock

5,200Expected 2026-05-08

Cut Tape

$9.61

$9.03

$8.38

$6.80

Reel

$5.10

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 400

EMI Filter Circuits

EMI Network Filter Arrays

LC Filter

- 55 C

+ 125 C

AEC-Q200

Reel, Cut Tape, MouseReel

Ferrite Beads 600 OHM Alternate Sizing Guide Below

BLM21SP601SN1D
Murata Electronics
1: $0.461
190,686In Stock

Mfr. Part #
BLM21SP601SN1D

Mouser Part #
81-BLM21SP601SN1D

Murata Electronics

Ferrite Beads 600 OHM Alternate Sizing Guide Below

Learn More

Datasheet

190,686In Stock

Cut Tape

$0.461

$0.321

$0.279

$0.249

View

Reel

$0.117

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

Ferrite Beads

Ferrite Chip Beads

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

EMI Filter Circuits 35 DB 50V 20A SMD

BNX022-01L
Murata Electronics
1: $7.14
14,219In Stock
6,400Expected 2026-04-21

Mfr. Part #
BNX022-01L

Mouser Part #
81-BNX022-01L

Murata Electronics

EMI Filter Circuits 35 DB 50V 20A SMD

Learn More

Datasheet

14,219In Stock

6,400Expected 2026-04-21

Cut Tape

$7.14

$5.82

$5.37

$5.05

Reel

$3.87

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 400

EMI Filter Circuits

EMI Network Filter Arrays

LC Filter

- 40 C

+ 125 C

Reel, Cut Tape, MouseReel

Ferrite Beads 330 OHM 25% Alternate Sizing Guide Below

BLM18KG331SN1D
Murata Electronics
1: $0.154
419,826In Stock

Mfr. Part #
BLM18KG331SN1D

Mouser Part #
81-BLM18KG331SN1D

Murata Electronics

Ferrite Beads 330 OHM 25% Alternate Sizing Guide Below

Learn More

Datasheet

419,826In Stock

Cut Tape

$0.154

$0.094

$0.074

$0.066

Reel

$0.031

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

Ferrite Beads

Ferrite Chip Beads

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

Ferrite Beads 120 OHM Alternate Sizing Guide Below

BLM31KN121SN1L
Murata Electronics
1: $0.553
23,938In Stock
12,500Expected 2026-04-28

Mfr. Part #
BLM31KN121SN1L

Mouser Part #
81-BLM31KN121SN1L

Murata Electronics

Ferrite Beads 120 OHM Alternate Sizing Guide Below

Learn More

Datasheet

23,938In Stock

12,500Expected 2026-04-28

Cut Tape

$0.553

$0.393

$0.341

$0.305

View

Reel

$0.147

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,500

Ferrite Beads

Ferrite Chip Beads

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

Ferrite Beads 600 OHM Alternate Sizing Guide Below

BLM31KN601SN1L
Murata Electronics
1: $0.568
43,429In Stock

Mfr. Part #
BLM31KN601SN1L

Mouser Part #
81-BLM31KN601SN1L

Murata Electronics

Ferrite Beads 600 OHM Alternate Sizing Guide Below

Learn More

Datasheet

43,429In Stock

Cut Tape

$0.568

$0.402

$0.348

$0.287

View

Reel

$0.147

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,500

Ferrite Beads

Ferrite Chip Beads

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

EMI Filter Circuits 16 V 15A

BNX028-01L
Murata Electronics
1: $9.04
1,932In Stock
3,200Expected 2026-04-14

Mfr. Part #
BNX028-01L

Mouser Part #
81-BNX028-01L

Murata Electronics

EMI Filter Circuits 16 V 15A

Learn More

Datasheet

1,932In Stock

3,200Expected 2026-04-14

Cut Tape

$9.04

$7.38

$6.82

$6.40

Reel

$5.00

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 400

EMI Filter Circuits

EMI Network Filters

LC Filter

- 40 C

+ 105 C

Reel, Cut Tape, MouseReel

Common Mode Chokes / Filters 800 NH

PLT10HH450180PNL
Murata Electronics
1: $15.67
377In Stock
250Expected 2026-04-14

Mfr. Part #
PLT10HH450180PNL

Mouser Part #
81-PLT10HH450180PNL

Murata Electronics

Common Mode Chokes / Filters 800 NH

Learn More

Datasheet

377In Stock

250Expected 2026-04-14

Cut Tape

$15.67

$13.06

$12.08

$11.54

Reel

$10.59

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 125

Common Mode Chokes

- 55 C

+ 125 C

AEC-Q200

Reel, Cut Tape, MouseReel

Ferrite Beads 220 OHM 25% Alternate Sizing Guide Below

BLM18KG221SN1D
Murata Electronics
1: $0.154
150,702In Stock
120,000Expected 2026-04-14

Mfr. Part #
BLM18KG221SN1D

Mouser Part #
81-BLM18KG221SN1D

Murata Electronics

Ferrite Beads 220 OHM 25% Alternate Sizing Guide Below

Learn More

Datasheet

150,702In Stock

120,000Expected 2026-04-14

Cut Tape

$0.154

$0.094

$0.074

$0.066

Reel

$0.029

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

Ferrite Beads

Ferrite Chip Beads

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

Ferrite Beads 470 OHM 25% Alternate Sizing Guide Below

BLM18KG471SN1D
Murata Electronics
1: $0.154
107,911In Stock
80,000Expected 2026-04-14

Mfr. Part #
BLM18KG471SN1D

Mouser Part #
81-BLM18KG471SN1D

Murata Electronics

Ferrite Beads 470 OHM 25% Alternate Sizing Guide Below

Learn More

Datasheet

107,911In Stock

80,000Expected 2026-04-14

Cut Tape

$0.154

$0.094

$0.074

$0.066

Reel

$0.031

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

Ferrite Beads

Ferrite Chip Beads

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

Ferrite Beads 30 OHM 10% Alternate Sizing Guide Below

BLM21SN300SN1D
Murata Electronics
1: $0.307
51,803In Stock
52,000Expected 2026-04-14

Mfr. Part #
BLM21SN300SN1D

Mouser Part #
81-BLM21SN300SN1D

Murata Electronics

Ferrite Beads 30 OHM 10% Alternate Sizing Guide Below

Learn More

Datasheet

51,803In Stock

52,000Expected 2026-04-14

Cut Tape

$0.307

$0.215

$0.186

$0.167

View

Reel

$0.074

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

Ferrite Beads

Ferrite Chip Beads

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

Ferrite Beads 110 OHM Alternate Sizing Guide Below

BLM21SP111SN1D
Murata Electronics
1: $0.461
23,616In Stock
20,000Expected 2026-03-13

Mfr. Part #
BLM21SP111SN1D

Mouser Part #
81-BLM21SP111SN1D

Murata Electronics

Ferrite Beads 110 OHM Alternate Sizing Guide Below

Learn More

Datasheet

23,616In Stock

20,000Expected 2026-03-13

Cut Tape

$0.461

$0.321

$0.279

$0.249

View

Reel

$0.117

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

Ferrite Beads

Ferrite Chip Beads

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

Ferrite Beads 330 OHM Alternate Sizing Guide Below

BLM21SP331SN1D
Murata Electronics
1: $0.461
25,596In Stock

Mfr. Part #
BLM21SP331SN1D

Mouser Part #
81-BLM21SP331SN1D

Murata Electronics

Ferrite Beads 330 OHM Alternate Sizing Guide Below

Learn More

Datasheet

25,596In Stock

Cut Tape

$0.461

$0.321

$0.279

$0.249

View

Reel

$0.117

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

Ferrite Beads

Ferrite Chip Beads

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

Ferrite Beads 470 OHM Alternate Sizing Guide Below

BLM31KN471SN1L
Murata Electronics
1: $0.568
36,311In Stock
75,000On Order

Mfr. Part #
BLM31KN471SN1L

Mouser Part #
81-BLM31KN471SN1L

Murata Electronics

Ferrite Beads 470 OHM Alternate Sizing Guide Below

Learn More

Datasheet

36,311In Stock

75,000On Order

Cut Tape

$0.568

$0.402

$0.348

$0.312

View

Reel

$0.147

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,500

Ferrite Beads

Ferrite Chip Beads

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

Ferrite Beads 50 OHM 12A Alternate Sizing Guide Below

BLM31SN500SN1L
Murata Electronics
1: $0.599
33,964In Stock
41,565Expected 2026-02-25

Mfr. Part #
BLM31SN500SN1L

Mouser Part #
81-BLM31SN500SN1L

Murata Electronics

Ferrite Beads 50 OHM 12A Alternate Sizing Guide Below

Learn More

Datasheet

33,964In Stock

41,565Expected 2026-02-25

Cut Tape

$0.599

$0.416

$0.361

$0.322

View

Reel

$0.155

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

Ferrite Beads

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

EMI Filter Circuits 4.7 UF 50V 20A

BNX024H01L
Murata Electronics
1: $9.10
2,896In Stock
7,990On Order

Mfr. Part #
BNX024H01L

Mouser Part #
81-BNX024H01L

Murata Electronics

EMI Filter Circuits 4.7 UF 50V 20A

Learn More

Datasheet

2,896In Stock

7,990On Order

Cut Tape

$9.10

$8.70

$7.83

$6.68

Reel

$5.00

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 400

EMI Filter Circuits

EMI Network Filter Arrays

LC Filter

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

EMI Filter Circuits 10.0 UF 25V 20A

BNX025H01L
Murata Electronics
1: $8.87
3,649In Stock
3,439Expected 2026-02-27

Mfr. Part #
BNX025H01L

Mouser Part #
81-BNX025H01L

Murata Electronics

EMI Filter Circuits 10.0 UF 25V 20A

Learn More

Datasheet

3,649In Stock

3,439Expected 2026-02-27

Cut Tape

$8.87

$7.25

$6.68

$6.28

Reel

$5.00

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 400

EMI Filter Circuits

EMI Network Filter Arrays

LC Filter

- 55 C

+ 125 C

AEC-Q200

Reel, Cut Tape, MouseReel

EMI Filter Circuits 6.3 V 15A

BNX029-01L
Murata Electronics
1: $8.87
1,347In Stock

Mfr. Part #
BNX029-01L

Mouser Part #
81-BNX029-01L

Murata Electronics

EMI Filter Circuits 6.3 V 15A

Learn More

Datasheet

1,347In Stock

Cut Tape

$8.87

$7.25

$6.68

$6.28

Reel

$5.33

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 400

EMI Filter Circuits

EMI Network Filters

LC Filter

- 40 C

+ 125 C

Reel, Cut Tape, MouseReel

Common Mode Chokes / Filters 100 OHM 300V 15A 2UH

PLT10HH101150PNL
Murata Electronics
1: $15.67
547In Stock
500Expected 2026-06-18

Mfr. Part #
PLT10HH101150PNL

Mouser Part #
81-PLT10HH101150PNL

Murata Electronics

Common Mode Chokes / Filters 100 OHM 300V 15A 2UH

Learn More

Datasheet

547In Stock

500Expected 2026-06-18

Cut Tape

$15.67

$13.17

$12.19

$11.65

Reel

$10.87

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 125

Common Mode Chokes

- 55 C

+ 125 C

AEC-Q200

Reel, Cut Tape, MouseReel

Common Mode Chokes / Filters 10M OHM 100V 6A 20UH

PLT10HH1026R0PNL
Murata Electronics
1: $7.29
1,413In Stock
1,000Expected 2026-06-18

Mfr. Part #
PLT10HH1026R0PNL

Mouser Part #
81-PLT10HH1026R0PNL

Murata Electronics

Common Mode Chokes / Filters 10M OHM 100V 6A 20UH

Learn More

Datasheet

1,413In Stock

1,000Expected 2026-06-18

Cut Tape

$7.29

$5.94

$5.48

$5.13

Reel

$4.50

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 125

Common Mode Chokes

- 55 C

+ 105 C

AEC-Q200

Reel, Cut Tape, MouseReel

Common Mode Chokes / Filters 6 UH

PLT10HH401100PNL
Murata Electronics
1: $7.29
1,384In Stock

Mfr. Part #
PLT10HH401100PNL

Mouser Part #
81-PLT10HH401100PNL

Murata Electronics

Common Mode Chokes / Filters 6 UH

Learn More

Datasheet

1,384In Stock

Cut Tape

$7.29

$5.94

$5.48

$5.16

Reel

$4.64

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 125

Common Mode Chokes

- 55 C

+ 125 C

AEC-Q200

Reel, Cut Tape, MouseReel

Power Supply Line Noise Suppression for Home Audio

Types of EMI Filters / EMI Suppression

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