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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Murata Electronics Ferrite Beads 30 OHM Alternate Sizing Guide Below
Datasheet
94,459In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

BLM18_xN Ferrite Chip Beads SMD/SMT 0603 (1608 metric) 30 Ohms 6 A 25 % 10 mOhms - 55 C + 125 C 1.6 mm 0.8 mm 0.6 mm Reel, Cut Tape, MouseReel
Murata Electronics Ferrite Beads
Datasheet
43,000In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 15,000

BLM02xX_SN Ferrite Beads SMD/SMT 1005 (0402 metric) 18 Ohms 1.2 A 25 % 45 mOhms - 55 C + 125 C 0.4 mm 0.2 mm 0.2 mm Reel, Cut Tape, MouseReel
Murata Electronics Ferrite Beads 1000 OHM Alternate Sizing Guide Below
Datasheet
2,50,274In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

BLM18_xN Ferrite Chip Beads SMD/SMT 0603 (1608 metric) 1 kOhms 1 A 25 % - 55 C + 125 C 1.6 mm 0.8 mm 0.8 mm Reel, Cut Tape, MouseReel
Murata Electronics Ferrite Beads 220 OHM 25% Alternate Sizing Guide Below
Datasheet
5,42,241In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

BLM18_xN Ferrite Chip Beads SMD/SMT 0603 (1608 metric) 220 Ohms 2.2 A 25 % 50 mOhms - 55 C + 125 C 1.6 mm 0.8 mm 0.8 mm Reel, Cut Tape, MouseReel
Murata Electronics Ferrite Beads 330 OHM 25% Alternate Sizing Guide Below
Datasheet
3,31,471In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

BLM18_xN Ferrite Chip Beads SMD/SMT 0603 (1608 metric) 330 Ohms 1.7 A 25 % 80 mOhms - 55 C + 125 C 1.6 mm 0.8 mm 0.8 mm Reel, Cut Tape, MouseReel
Murata Electronics Ferrite Beads 470 OHM 25% Alternate Sizing Guide Below
Datasheet
1,59,851In Stock
1,20,000Expected 23-03-2027
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

BLM18_xN Ferrite Chip Beads SMD/SMT 0603 (1608 metric) 470 Ohms 1.5 A 25 % 130 mOhms - 55 C + 125 C 1.6 mm 0.8 mm 0.8 mm Reel, Cut Tape, MouseReel
Murata Electronics Ferrite Beads 600 OHM 25% Alternate Sizing Guide Below
Datasheet
5,37,082In Stock
8,80,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

BLM18_xN Ferrite Chip Beads SMD/SMT 0603 (1608 metric) 600 Ohms 1.3 A 25 % 150 mOhms - 55 C + 125 C 1.6 mm 0.8 mm 0.8 mm Reel, Cut Tape, MouseReel
Murata Electronics Ferrite Beads 30 OHM 10% Alternate Sizing Guide Below
Datasheet
2,48,934On Order
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

BLM21_xN Ferrite Chip Beads SMD/SMT 0805 (2012 metric) 30 Ohms 8.5 A 25 % 4 mOhms - 55 C + 125 C 2 mm 1.25 mm 0.85 mm Reel, Cut Tape, MouseReel
Murata Electronics Ferrite Beads 1000 OHM Alternate Sizing Guide Below
Datasheet
1,62,721In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

BLM21_xN Ferrite Chip Beads SMD/SMT 0805 (2012 metric) 1 kOhms 1.6 A 25 % 120 mOhms - 55 C + 125 C 2 mm 1.25 mm 0.85 mm Reel, Cut Tape, MouseReel
Murata Electronics Ferrite Beads 110 OHM Alternate Sizing Guide Below
Datasheet
57,558In Stock
2,16,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

BLM21_xN Ferrite Chip Beads SMD/SMT 0805 (2012 metric) 110 Ohms 5 A 25 % 13 mOhms - 55 C + 125 C 2 mm 1.25 mm 0.85 mm Reel, Cut Tape, MouseReel
Murata Electronics Ferrite Beads 330 OHM Alternate Sizing Guide Below
Datasheet
82In Stock
40,000Expected 29-07-2026
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

BLM21_xN Ferrite Chip Beads SMD/SMT 0805 (2012 metric) 330 Ohms 2.8 A 25 % 40 mOhms - 55 C + 125 C 2 mm 1.25 mm 0.85 mm Reel, Cut Tape, MouseReel
Murata Electronics Ferrite Beads 600 OHM Alternate Sizing Guide Below
Datasheet
54,869In Stock
4,20,000Expected 31-07-2026
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

BLM21_xN Ferrite Chip Beads SMD/SMT 0805 (2012 metric) 600 Ohms 2.3 A 25 % 60 mOhms - 55 C + 125 C 2 mm 1.25 mm 0.85 mm Reel, Cut Tape, MouseReel
Murata Electronics Ferrite Beads 1000 OHM 2A Alternate Sizing Guide Below
Datasheet
94,316In Stock
87,500Expected 26-10-2026
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

BLM31KN_SN Ferrite Chip Beads SMD/SMT 1206 (3216 metric) 1 kOhms 2 A 25 % 75 mOhms - 55 C + 125 C 3.2 mm 1.6 mm 1.6 mm Reel, Cut Tape, MouseReel
Murata Electronics Ferrite Beads 120 OHM Alternate Sizing Guide Below
Datasheet
35,192In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 10,000

BLM15_SN Ferrite Chip Beads SMD/SMT 0402 (1005 metric) 120 Ohms 1.5 A 25 % 70 mOhms - 55 C + 125 C 1 mm 0.5 mm 0.5 mm Reel, Cut Tape, MouseReel
Murata Electronics Ferrite Beads 22 OHM Alternate Sizing Guide Below
Datasheet
3,343In Stock
88,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

BLM18_xN Ferrite Chip Beads SMD/SMT 0603 (1608 metric) 22 Ohms 6 A 25 % 8 mOhms - 55 C + 125 C 1.6 mm 0.8 mm 0.8 mm Reel, Cut Tape, MouseReel
Murata Electronics Ferrite Beads FB SMD 0603inch 100o hm NONAUTO Alternate Sizing Guide Below
Datasheet
19,918In Stock
12,000Expected 24-09-2026
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

BLM18_xN Ferrite Chip Beads SMD/SMT 0603 (1608 metric) 100 Ohms 3.7 A 25 % 26 mOhms - 55 C + 125 C 1.6 mm 0.8 mm 0.6 mm Reel, Cut Tape, MouseReel
Murata Electronics Ferrite Beads 1000 OHM Alternate Sizing Guide Below
Datasheet
8,001In Stock
28,000Expected 29-10-2026
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

BLM18_xN Ferrite Chip Beads SMD/SMT 0603 (1608 metric) 1 kOhms 1.2 A 25 % 222 mOhms - 55 C + 125 C 1.6 mm 0.8 mm 0.6 mm Reel, Cut Tape, MouseReel
Murata Electronics Ferrite Beads 600 OHM Alternate Sizing Guide Below
Datasheet
19,692In Stock
16,000Expected 21-09-2026
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

BLM18_xN Ferrite Chip Beads SMD/SMT 0603 (1608 metric) 600 Ohms 1.5 A 25 % 168 mOhms - 55 C + 125 C 1.6 mm 0.8 mm 0.6 mm Reel, Cut Tape, MouseReel
Murata Electronics Ferrite Beads 470 OHM Alternate Sizing Guide Below
Datasheet
5,550In Stock
44,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

BLM21_xN Ferrite Chip Beads SMD/SMT 0805 (2012 metric) 470 Ohms 2.5 A 25 % 50 mOhms - 55 C + 125 C 2 mm 1.25 mm 0.85 mm Reel, Cut Tape, MouseReel
Murata Electronics Ferrite Beads 70 OHM Alternate Sizing Guide Below
Datasheet
13,982In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

BLM21_xN Ferrite Chip Beads SMD/SMT 0805 (2012 metric) 70 Ohms 6 A 25 % 9 mOhms - 55 C + 125 C 2 mm 1.25 mm 0.85 mm Reel, Cut Tape, MouseReel
Murata Electronics Ferrite Beads 270 OHM 4.5A Alternate Sizing Guide Below
Datasheet
903In Stock
2,97,500On Order
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

BLM31KN_SN Ferrite Chip Beads SMD/SMT 1206 (3216 metric) 270 Ohms 4.5 A 25 % 16 mOhms - 55 C + 125 C 3.2 mm 1.6 mm 1.6 mm Reel, Cut Tape, MouseReel
Murata Electronics Ferrite Beads 470 OHM Alternate Sizing Guide Below
Datasheet
24,242In Stock
1,75,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

BLM31KN_SN Ferrite Chip Beads SMD/SMT 1206 (3216 metric) 470 Ohms 4 A 25 % 20 mOhms - 55 C + 125 C 3.2 mm 1.6 mm 1.6 mm Reel, Cut Tape, MouseReel
Murata Electronics Ferrite Beads 800 OHM 2.5A Alternate Sizing Guide Below
Datasheet
1,298In Stock
47,500On Order
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

BLM31KN_SN Ferrite Chip Beads SMD/SMT 1206 (3216 metric) 800 Ohms 2.5 A 25 % 50 mOhms - 55 C + 125 C 3.2 mm 1.6 mm 1.6 mm Reel, Cut Tape, MouseReel
Murata Electronics Ferrite Beads 20 OHM Alternate Sizing Guide Below
Datasheet
2In Stock
90,000Expected 25-08-2026
MouseReel Available
Min.: 1
Mult.: 1
: 10,000

BLM15_SN Ferrite Beads SMD/SMT 0402 (1005 metric) 20 Ohms 3.8 A 25 % 11 mOhms - 55 C + 125 C 1 mm 0.5 mm 0.5 mm Reel, Cut Tape, MouseReel
Murata Electronics Ferrite Beads 50 OHM 12A Alternate Sizing Guide Below
Datasheet
3,09,645On Order
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

BLM31_SN Ferrite Beads SMD/SMT 1206 (3216 metric) 50 Ohms 12 A 25 % 1.6 mOhms - 55 C + 125 C 3.2 mm 1.6 mm 1.1 mm Reel, Cut Tape, MouseReel