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 1000 OHM Alternate Sizing Guide Below
Datasheet
179.953In 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
Datasheet
44.500In 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 2A Alternate Sizing Guide Below
Datasheet
142.057In Stock
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 20 OHM Alternate Sizing Guide Below
Datasheet
105.958In Stock
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 1000 OHM Alternate Sizing Guide Below
Datasheet
84.183In Stock
220.000On Order
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 330 OHM 25% Alternate Sizing Guide Below
Datasheet
374.841In 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
137.418In Stock
68.000Expected 6/11/2026
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
173.277In Stock
640.000On 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 33 OHM Alternate Sizing Guide Below
Datasheet
29.434In Stock
60.000Expected 11/24/2026
MouseReel Available
Min.: 1
Mult.: 1
: 4.000

BLM18_xN Ferrite Chip Beads SMD/SMT 0603 (1608 metric) 33 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 30 OHM Alternate Sizing Guide Below
Datasheet
95.145In 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 600 OHM Alternate Sizing Guide Below
Datasheet
27.249In Stock
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 30 OHM 10% Alternate Sizing Guide Below
Datasheet
41.618In Stock
160.000On 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 110 OHM Alternate Sizing Guide Below
Datasheet
97.711In Stock
56.000Expected 8/10/2026
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 470 OHM Alternate Sizing Guide Below
Datasheet
18.661In Stock
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 600 OHM Alternate Sizing Guide Below
Datasheet
65.474In Stock
420.000Expected 12/3/2026
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 120 OHM Alternate Sizing Guide Below
Datasheet
17.830In Stock
75.000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

BLM31KN_SN Ferrite Chip Beads SMD/SMT 1206 (3216 metric) 120 Ohms 6 A 25 % 9 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
128.800In Stock
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 600 OHM Alternate Sizing Guide Below
Datasheet
30.166In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

BLM31KN_SN Ferrite Chip Beads SMD/SMT 1206 (3216 metric) 600 Ohms 2.9 A 25 % 38 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
44.339In Stock
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 50 OHM 12A Alternate Sizing Guide Below
Datasheet
36.370In Stock
150.000On 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
Murata Electronics Ferrite Beads 120 OHM Alternate Sizing Guide Below
Datasheet
21.266In Stock
20.000Expected 5/27/2026
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 30 OHM Alternate Sizing Guide Below
Datasheet
44.229In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 10.000

BLM15_SN Ferrite Chip Beads SMD/SMT 0402 (1005 metric) 30 Ohms 3.1 A 25 % 17 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
10.413In Stock
68.000On 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
742In Stock
28.000On Order
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
20.322In Stock
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