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Audio Line Noise Suppression for Home Audio

Digital amplifiers are becoming more popular for home audio applications and have improved in terms of audio quality. But because of the switching noise that occurs in digital amplifiers, noise that exceeds EMC standards can be emitted into the space around the cable connected to the speaker. Noise suppression via capacitors and inductors is typically implemented to solve this noise problem. But Murata has developed noise filters for audio lines that suppress unwanted noise while maintaining audio quality. Here is an overview of noise problems in home audio and their solutions.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.	Series	Product	Termination Style	Package/Case	Impedance	Maximum DC Current	Tolerance	Maximum DC Resistance	Minimum Operating Temperature	Maximum Operating Temperature	Length	Width	Height	Qualification	Packaging
Ferrite Beads EMI Filter SMD NONAUTO NFZ2MSD300SN10L Murata Electronics 1: £0.315 1,067In Stock	Mfr. Part No. NFZ2MSD300SN10L Mouser Part No 81-NFZ2MSD300SN10L	Murata Electronics	Ferrite Beads EMI Filter SMD NONAUTO Learn More about Murata Electronics murata nfz chip noise filters	Datasheet	1,067In Stock	Cut Tape £0.315 £0.259 £0.213 £0.205 View Reel £0.156 £0.19 £0.166 £0.156 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	NFZ	EMI Filters	SMD/SMT	0806 (2016 metric)	30 Ohms	3.7 A	25 %	33 mOhms	- 55 C	+ 125 C	2 mm	1.6 mm	1.2 mm		Reel, Cut Tape, MouseReel
Ferrite Beads EMI Filter SMD 300ohm INFOTMT NFZ2MSD301SZ10L Murata Electronics 1: £0.511 3,254In Stock 3,000Expected 12/11/2026	Mfr. Part No. NFZ2MSD301SZ10L Mouser Part No 81-NFZ2MSD301SZ10L	Murata Electronics	Ferrite Beads EMI Filter SMD 300ohm INFOTMT Learn More about Murata Electronics murata nfz chip noise filters	Datasheet	3,254In Stock 3,000Expected 12/11/2026	Cut Tape £0.511 £0.357 £0.31 £0.276 View Reel £0.15 £0.244 £0.207 £0.18 £0.174 £0.15 MouseReel Available	Min.: 1 Mult.: 1 Max.: 3,000 : 3,000	NFZ	EMI Filters	SMD/SMT	0806 (2016 metric)	300 Ohms	3.8 A	25 %	26 mOhms	- 55 C	+ 125 C	2 mm	1.6 mm	1.2 mm	AEC-Q200	Reel, Cut Tape, MouseReel
Ferrite Beads 500 OHM 3.2A NFZ2MSD501SZ10L Murata Electronics 1: £0.346 1,827In Stock 6,000Expected 17/12/2026	Mfr. Part No. NFZ2MSD501SZ10L Mouser Part No 81-NFZ2MSD501SZ10L	Murata Electronics	Ferrite Beads 500 OHM 3.2A Learn More about Murata Electronics murata nfz chip noise filters	Datasheet	1,827In Stock 6,000Expected 17/12/2026	Cut Tape £0.346 £0.283 £0.279 £0.233 View Reel £0.154 £0.219 £0.205 £0.182 £0.154 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	NFZ	EMI Filters	SMD/SMT	0806 (2016 metric)	500 Ohms	3.2 A	25 %	32 mOhms	- 55 C	+ 125 C	2 mm	1.6 mm	1.2 mm	AEC-Q200	Reel, Cut Tape, MouseReel
Ferrite Beads EMI Filter SMD NONAUTO NFZ2MSD600SN10L Murata Electronics 1: £0.473 5,304In Stock 9,000Expected 12/11/2026	Mfr. Part No. NFZ2MSD600SN10L Mouser Part No 81-NFZ2MSD600SN10L	Murata Electronics	Ferrite Beads EMI Filter SMD NONAUTO Learn More about Murata Electronics murata nfz chip noise filters	Datasheet	5,304In Stock 9,000Expected 12/11/2026	Cut Tape £0.473 £0.33 £0.285 £0.255 View Reel £0.134 £0.226 £0.19 £0.167 £0.158 £0.134 MouseReel Available	Min.: 1 Mult.: 1 Max.: 3,000 : 3,000	NFZ	EMI Filters	SMD/SMT	0806 (2016 metric)	60 Ohms	2.7 A	25 %	54 mOhms	- 55 C	+ 125 C	2 mm	1.6 mm	1.2 mm		Reel, Cut Tape, MouseReel
Ferrite Beads EMI Filter SMD NONAUTO NFZ2MSD900SN10L Murata Electronics 1: £0.315 24In Stock 6,000Expected 30/11/2026	Mfr. Part No. NFZ2MSD900SN10L Mouser Part No 81-NFZ2MSD900SN10L	Murata Electronics	Ferrite Beads EMI Filter SMD NONAUTO Learn More about Murata Electronics murata nfz chip noise filters	Datasheet	24In Stock 6,000Expected 30/11/2026	Cut Tape £0.315 £0.259 £0.213 £0.205 View Reel £0.148 £0.19 £0.166 £0.148 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	NFZ	EMI Filters	SMD/SMT	0806 (2016 metric)	90 Ohms	2 A	25 %	95 mOhms	- 55 C	+ 125 C	2 mm	1.6 mm	1.2 mm		Reel, Cut Tape, MouseReel
Ferrite Beads 1000 OHM 210MA NFZ03SG102SN10D Murata Electronics 1: £0.15 30,000On Order	Mfr. Part No. NFZ03SG102SN10D Mouser Part No 81-NFZ03SG102SN10D	Murata Electronics	Ferrite Beads 1000 OHM 210MA Learn More about Murata Electronics murata nfz chip noise filters	Datasheet	30,000On Order On Order Ship Dates Mfr. No: NFZ03SG102SN10D Stock: 0 On Order: 15,000 Expected 10/11/2026 15,000 Expected 24/11/2026 Factory Lead Time: 10 Weeks	Cut Tape £0.15 £0.115 £0.09 £0.08 View Reel £0.038 £0.069 £0.061 £0.053 £0.046 £0.038 £0.038 MouseReel Available	Min.: 1 Mult.: 1 : 15,000	NFZ	Ferrite Chip Beads	SMD/SMT	0201 (0603 metric)	1 kOhms	210 mA	25 %	1.3 Ohms	- 55 C	+ 125 C	0.6 mm	0.3 mm	0.3 mm		Reel, Cut Tape, MouseReel
Ferrite Beads 1K OHM 2.5A NFZ2MSD102SZ10L Murata Electronics 1: £0.511 39In Stock 9,000Expected 05/05/2027	Mfr. Part No. NFZ2MSD102SZ10L Mouser Part No 81-NFZ2MSD102SZ10L	Murata Electronics	Ferrite Beads 1K OHM 2.5A Learn More about Murata Electronics murata nfz chip noise filters	Datasheet	39In Stock 9,000Expected 05/05/2027	Cut Tape £0.511 £0.357 £0.31 £0.276 View Reel £0.148 £0.244 £0.207 £0.18 £0.174 £0.148 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	NFZ	EMI Filters	SMD/SMT	0806 (2016 metric)	1 kOhms	2.5 A	25 %	46 mOhms	- 55 C	+ 125 C	2 mm	1.6 mm	1.2 mm	AEC-Q200	Reel, Cut Tape, MouseReel
Ferrite Beads 120 OHM 1.1A NFZ18SM121SN10D Murata Electronics 1: £0.285 7,975On Order	Mfr. Part No. NFZ18SM121SN10D Mouser Part No 81-NFZ18SM121SN10D	Murata Electronics	Ferrite Beads 120 OHM 1.1A Learn More about Murata Electronics murata nfz chip noise filters	Datasheet	7,975On Order	Cut Tape £0.285 £0.201 £0.155 £0.138 View Reel £0.075 £0.118 £0.104 £0.09 £0.075 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	NFZ	EMI Filters	SMD/SMT	0603 (1608 metric)	120 Ohms	1.25 A	25 %	140 mOhms	- 55 C	+ 125 C	1.6 mm	0.8 mm	0.8 mm		Reel, Cut Tape, MouseReel
Ferrite Beads NFZ2MSM181SN10L Murata Electronics 1: £0.375 2,575Expected 01/04/2027 NRND	Mfr. Part No. NFZ2MSM181SN10L Mouser Part No 81-NFZ2MSM181SN10L NRND	Murata Electronics	Ferrite Beads Learn More about Murata Electronics murata nfz chip noise filters	Datasheet	2,575Expected 01/04/2027	Cut Tape £0.375 £0.264 £0.228 £0.203 View Reel £0.175 £0.181 £0.179 £0.175 £0.175 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	NFZ	EMI Filters	SMD/SMT	0806 (2016 metric)	180 Ohms	3.4 A	25 %	25 mOhms	- 40 C	+ 85 C	2 mm	1.6 mm	0.9 mm		Reel, Cut Tape, MouseReel
Ferrite Beads NFZ03SG501SN10D Murata Electronics 15,000: £0.039 Non-Stocked Lead-Time 10 Weeks	Mfr. Part No. NFZ03SG501SN10D Mouser Part No 81-NFZ03SG501SN10D	Murata Electronics	Ferrite Beads Learn More about Murata Electronics murata nfz chip noise filters	Datasheet	Non-Stocked Lead-Time 10 Weeks	Reel £0.039	Min.: 15,000 Mult.: 15,000 : 15,000	NFZ	Ferrite Chip Beads	SMD/SMT	0201 (0603 metric)	500 Ohms	275 mA	25 %	730 mOhms	- 55 C	+ 125 C	0.6 mm	0.3 mm	0.3 mm		Reel
Ferrite Beads NFZ18SM121SZ10D Murata Electronics 1: £0.338 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. NFZ18SM121SZ10D Mouser Part No 81-NFZ18SM121SZ10D	Murata Electronics	Ferrite Beads Learn More about Murata Electronics murata nfz chip noise filters	Datasheet	Non-Stocked Lead-Time 8 Weeks	Cut Tape £0.338 £0.236 £0.204 £0.163 Reel £0.084 View £0.139 £0.122 £0.107 £0.083 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	NFZ	EMI Filters	SMD/SMT	0603 (1608 metric)	120 Ohms	1.25 A	25 %	140 mOhms	- 55 C	+ 125 C	1.6 mm	0.8 mm	0.8 mm		Reel, Cut Tape, MouseReel