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EMI Noise Suppression

Noise suppression has become an important issue, especially regarding electromagnetic interference (EMI) and electromagnetic compatibility (EMC). Murata provides engineers with complete support, including products and design-simulation software solutions based on expertise achieved through extensive on-site experience. This enables Murata to provide noise suppression solutions for a broad array of applications.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (EUR) Filter the results in the table by unit price based on your quantity.	Qty.
Ferrite Beads 1500 OHM 25% Alternate Sizing Guide Below BLM21BD152SN1D Murata Electronics 1: 0,292 € 28 023In Stock 40 000Expected 11/12/2026	Mfr. Part No. BLM21BD152SN1D Mouser Part No 81-BLM21BD152SN1D	Murata Electronics	Ferrite Beads 1500 OHM 25% Alternate Sizing Guide Below Learn More about Murata Electronics murata blm emi filter	Datasheet	28 023In Stock 40 000Expected 11/12/2026	Cut Tape 0,292 € 0,203 € 0,157 € 0,14 € View Reel 0,074 € 0,12 € 0,106 € 0,092 € 0,074 € MouseReel Available	Min.: 1 Mult.: 1 : 4 000
Ferrite Beads 1800 OHM 25% Alternate Sizing Guide Below BLM21BD182SH1D Murata Electronics 1: 0,232 € 32 003In Stock	Mfr. Part No. BLM21BD182SH1D Mouser Part No 81-BLM21BD182SH1D	Murata Electronics	Ferrite Beads 1800 OHM 25% Alternate Sizing Guide Below Learn More about Murata Electronics murata blm powertrain safety	Datasheet	32 003In Stock	Cut Tape 0,232 € 0,162 € 0,126 € 0,112 € View Reel 0,09 € 0,095 € 0,09 € 0,09 € MouseReel Available	Min.: 1 Mult.: 1 : 4 000
Ferrite Beads 2700 OHM 25% Alternate Sizing Guide Below BLM21BD272SH1L Murata Electronics 1: 0,344 € 68 711In Stock	Mfr. Part No. BLM21BD272SH1L Mouser Part No 81-BLM21BD272SH1L	Murata Electronics	Ferrite Beads 2700 OHM 25% Alternate Sizing Guide Below Learn More about Murata Electronics murata blm powertrain safety	Datasheet	68 711In Stock	Cut Tape 0,344 € 0,24 € 0,186 € 0,165 € View Reel 0,09 € 0,14 € 0,123 € 0,09 € 0,09 € MouseReel Available	Min.: 1 Mult.: 1 : 3 000
Ferrite Beads 2700 OHM 25% Alternate Sizing Guide Below BLM21BD272SN1L Murata Electronics 1: 0,292 € 83 590In Stock 60 000Expected 19/01/2027	Mfr. Part No. BLM21BD272SN1L Mouser Part No 81-BLM21BD272SN1L	Murata Electronics	Ferrite Beads 2700 OHM 25% Alternate Sizing Guide Below Learn More about Murata Electronics murata blm emi filter	Datasheet	83 590In Stock 60 000Expected 19/01/2027	Cut Tape 0,292 € 0,203 € 0,157 € 0,127 € View Reel 0,074 € 0,111 € 0,099 € 0,074 € 0,074 € MouseReel Available	Min.: 1 Mult.: 1 : 3 000
Ferrite Beads 470 OHM 25% Alternate Sizing Guide Below BLM21BD471SN1D Murata Electronics 1: 0,224 € 21 052In Stock	Mfr. Part No. BLM21BD471SN1D Mouser Part No 81-BLM21BD471SN1D	Murata Electronics	Ferrite Beads 470 OHM 25% Alternate Sizing Guide Below Learn More about Murata Electronics murata blm emi filter	Datasheet	21 052In Stock	Cut Tape 0,224 € 0,156 € 0,121 € 0,108 € View Reel 0,055 € 0,093 € 0,082 € 0,071 € 0,055 € MouseReel Available	Min.: 1 Mult.: 1 : 4 000
Ferrite Beads 30 OHM 25% Alternate Sizing Guide Below BLM21PG300SN1D Murata Electronics 1: 0,155 € 259 236In Stock 240 000Expected 10/05/2027	Mfr. Part No. BLM21PG300SN1D Mouser Part No 81-BLM21P300S	Murata Electronics	Ferrite Beads 30 OHM 25% Alternate Sizing Guide Below Learn More about Murata Electronics murata blm emi filter	Datasheet	259 236In Stock 240 000Expected 10/05/2027	Cut Tape 0,155 € 0,108 € 0,085 € 0,073 € Reel 0,037 € View 0,063 € 0,056 € 0,05 € 0,036 € MouseReel Available	Min.: 1 Mult.: 1 : 4 000
Ferrite Beads 120 OHM 25% Alternate Sizing Guide Below BLM21PG121SN1D Murata Electronics 1: 0,095 € 300 326In Stock	Mfr. Part No. BLM21PG121SN1D Mouser Part No 81-BLM21PG121SN1D	Murata Electronics	Ferrite Beads 120 OHM 25% Alternate Sizing Guide Below Learn More about Murata Electronics murata blm emi filter	Datasheet	300 326In Stock	Cut Tape 0,095 € 0,069 € 0,054 € 0,049 € View Reel 0,036 € 0,042 € 0,037 € 0,036 € MouseReel Available	Min.: 1 Mult.: 1 : 4 000
Ferrite Beads 22 OHM 25% Alternate Sizing Guide Below BLM21PG220SH1D Murata Electronics 1: 0,224 € 31 832In Stock	Mfr. Part No. BLM21PG220SH1D Mouser Part No 81-BLM21PG220SH1D	Murata Electronics	Ferrite Beads 22 OHM 25% Alternate Sizing Guide Below Learn More about Murata Electronics murata blm powertrain safety	Datasheet	31 832In Stock	Cut Tape 0,224 € 0,155 € 0,12 € 0,108 € View Reel 0,055 € 0,092 € 0,082 € 0,07 € 0,055 € MouseReel Available	Min.: 1 Mult.: 1 : 4 000
Ferrite Beads 220 OHM 1250MA Alternate Sizing Guide Below BLM21PG221SZ1D Murata Electronics 1: 0,103 € 74 796In Stock 48 000Expected 19/11/2026	Mfr. Part No. BLM21PG221SZ1D Mouser Part No 81-BLM21PG221SZ1D	Murata Electronics	Ferrite Beads 220 OHM 1250MA Alternate Sizing Guide Below Learn More about Murata Electronics murata blm powertrain safety	Datasheet	74 796In Stock 48 000Expected 19/11/2026	Cut Tape 0,103 € 0,071 € 0,055 € 0,05 € View Reel 0,036 € 0,04 € 0,038 € 0,036 € 0,036 € MouseReel Available	Min.: 1 Mult.: 1 : 4 000
Ferrite Beads 330 OHM 25% Alternate Sizing Guide Below BLM21PG331SH1D Murata Electronics 1: 0,232 € 38 972In Stock	Mfr. Part No. BLM21PG331SH1D Mouser Part No 81-BLM21PG331SH1D	Murata Electronics	Ferrite Beads 330 OHM 25% Alternate Sizing Guide Below Learn More about Murata Electronics murata blm powertrain safety	Datasheet	38 972In Stock	Cut Tape 0,232 € 0,164 € 0,128 € 0,114 € View Reel 0,055 € 0,098 € 0,086 € 0,076 € 0,055 € MouseReel Available	Min.: 1 Mult.: 1 : 4 000
Ferrite Beads 30 OHM 10% Alternate Sizing Guide Below BLM21SN300SH1D Murata Electronics 1: 0,344 € 45 935In Stock 28 000Expected 15/02/2027	Mfr. Part No. BLM21SN300SH1D Mouser Part No 81-BLM21SN300SH1D	Murata Electronics	Ferrite Beads 30 OHM 10% Alternate Sizing Guide Below Learn More about Murata Electronics murata blm powertrain safety	Datasheet	45 935In Stock 28 000Expected 15/02/2027	Cut Tape 0,344 € 0,24 € 0,186 € 0,165 € View Reel 0,085 € 0,141 € 0,124 € 0,108 € 0,085 € MouseReel Available	Min.: 1 Mult.: 1 : 4 000
Ferrite Beads 110 OHM Alternate Sizing Guide Below BLM21SP111SN1D Murata Electronics 1: 0,421 € 10 041In Stock 216 000On Order	Mfr. Part No. BLM21SP111SN1D Mouser Part No 81-BLM21SP111SN1D	Murata Electronics	Ferrite Beads 110 OHM Alternate Sizing Guide Below Learn More about Murata Electronics murata blm emi filter	Datasheet	10 041In Stock 216 000On Order On Order Ship Dates Mfr. No: BLM21SP111SN1D Stock: 10 041 Can Dispatch Immediately On Order: 140 000 Expected 05/01/2027 76 000 Expected 15/02/2027 Factory Lead Time: 20 Weeks	Cut Tape 0,421 € 0,292 € 0,255 € 0,227 € View Reel 0,116 € 0,20 € 0,17 € 0,15 € 0,136 € 0,116 € MouseReel Available	Min.: 1 Mult.: 1 : 4 000
Ferrite Beads 110 OHM Alternate Sizing Guide Below BLM21SP111SZ1D Murata Electronics 1: 0,456 € 15 950In Stock	Mfr. Part No. BLM21SP111SZ1D Mouser Part No 81-BLM21SP111SZ1D	Murata Electronics	Ferrite Beads 110 OHM Alternate Sizing Guide Below Learn More about Murata Electronics murata blm powertrain safety	Datasheet	15 950In Stock	Cut Tape 0,456 € 0,316 € 0,274 € 0,245 € View Reel 0,123 € 0,217 € 0,184 € 0,162 € 0,137 € 0,123 € MouseReel Available	Min.: 1 Mult.: 1 : 4 000
Ferrite Beads 180 OHM 25% BLM21SP181SN1D Murata Electronics 1: 0,439 € 59 800In Stock	Mfr. Part No. BLM21SP181SN1D Mouser Part No 81-BLM21SP181SN1D	Murata Electronics	Ferrite Beads 180 OHM 25% Learn More about Murata Electronics murata blm emi filter	Datasheet	59 800In Stock	Cut Tape 0,439 € 0,301 € 0,262 € 0,234 € View Reel 0,118 € 0,206 € 0,175 € 0,154 € 0,14 € 0,118 € MouseReel Available	Min.: 1 Mult.: 1 : 4 000
Ferrite Beads 180 OHM BLM21SP181SZ1D Murata Electronics 1: 0,456 € 16 672In Stock	Mfr. Part No. BLM21SP181SZ1D Mouser Part No 81-BLM21SP181SZ1D	Murata Electronics	Ferrite Beads 180 OHM Learn More about Murata Electronics murata blm powertrain safety	Datasheet	16 672In Stock	Cut Tape 0,456 € 0,316 € 0,274 € 0,245 € View Reel 0,123 € 0,197 € 0,184 € 0,162 € 0,147 € 0,123 € MouseReel Available	Min.: 1 Mult.: 1 : 4 000
Ferrite Beads BLM21SP331BH1D Murata Electronics 1: 0,525 € 11 625In Stock	Mfr. Part No. BLM21SP331BH1D Mouser Part No 81-BLM21SP331BH1D	Murata Electronics	Ferrite Beads Learn More about Murata Electronics murata blm powertrain safety	Datasheet	11 625In Stock	Cut Tape 0,525 € 0,369 € 0,319 € 0,285 € View Reel 0,148 € 0,252 € 0,213 € 0,187 € 0,175 € 0,148 € MouseReel Available	Min.: 1 Mult.: 1 : 4 000
Ferrite Beads 330 OHM Alternate Sizing Guide Below BLM21SP331SH1D Murata Electronics 1: 0,456 € 10 734In Stock	Mfr. Part No. BLM21SP331SH1D Mouser Part No 81-BLM21SP331SH1D	Murata Electronics	Ferrite Beads 330 OHM Alternate Sizing Guide Below Learn More about Murata Electronics murata blm powertrain safety	Datasheet	10 734In Stock	Cut Tape 0,456 € 0,321 € 0,279 € 0,249 € View Reel 0,127 € 0,22 € 0,187 € 0,164 € 0,15 € 0,127 € MouseReel Available	Min.: 1 Mult.: 1 : 4 000
Ferrite Beads 330 OHM Alternate Sizing Guide Below BLM21SP331SN1D Murata Electronics 1: 0,421 € 12 554In Stock 56 000On Order	Mfr. Part No. BLM21SP331SN1D Mouser Part No 81-BLM21SP331SN1D	Murata Electronics	Ferrite Beads 330 OHM Alternate Sizing Guide Below Learn More about Murata Electronics murata blm emi filter	Datasheet	12 554In Stock 56 000On Order On Order Ship Dates Mfr. No: BLM21SP331SN1D Stock: 12 554 Can Dispatch Immediately On Order: 16 000 Expected 15/02/2027 40 000 Expected 22/03/2027 Factory Lead Time: 20 Weeks	Cut Tape 0,421 € 0,292 € 0,255 € 0,227 € View Reel 0,118 € 0,20 € 0,17 € 0,132 € 0,121 € 0,118 € MouseReel Available	Min.: 1 Mult.: 1 : 4 000
Ferrite Beads 470 OHM Alternate Sizing Guide Below BLM21SP471SN1D Murata Electronics 1: 0,421 € 30 515In Stock 28 000Expected 22/03/2027	Mfr. Part No. BLM21SP471SN1D Mouser Part No 81-BLM21SP471SN1D	Murata Electronics	Ferrite Beads 470 OHM Alternate Sizing Guide Below Learn More about Murata Electronics murata blm emi filter	Datasheet	30 515In Stock 28 000Expected 22/03/2027	Cut Tape 0,421 € 0,292 € 0,255 € 0,227 € View Reel 0,116 € 0,20 € 0,17 € 0,15 € 0,136 € 0,116 € MouseReel Available	Min.: 1 Mult.: 1 : 4 000
Ferrite Beads 600 OHM 2.3A FERRITE-BEAD BLM21SP601BH1D Murata Electronics 1: 0,335 € 22 519In Stock	Mfr. Part No. BLM21SP601BH1D Mouser Part No 81-BLM21SP601BH1D	Murata Electronics	Ferrite Beads 600 OHM 2.3A FERRITE-BEAD Learn More about Murata Electronics murata blm powertrain safety	Datasheet	22 519In Stock	Cut Tape 0,335 € 0,235 € 0,203 € 0,181 € View Reel 0,148 € 0,162 € 0,148 € 0,148 € MouseReel Available	Min.: 1 Mult.: 1 : 4 000
Ferrite Beads 70 OHM 25% BLM21SP700BH1D Murata Electronics 1: 0,525 € 19 761In Stock 16 000Expected 26/04/2027	Mfr. Part No. BLM21SP700BH1D Mouser Part No 81-BLM21SP700BH1D	Murata Electronics	Ferrite Beads 70 OHM 25% Learn More about Murata Electronics murata blm powertrain safety	Datasheet	19 761In Stock 16 000Expected 26/04/2027	Cut Tape 0,525 € 0,333 € 0,319 € 0,285 € View Reel 0,152 € 0,252 € 0,213 € 0,193 € 0,175 € 0,152 € MouseReel Available	Min.: 1 Mult.: 1 : 4 000
Ferrite Beads 70 OHM Alternate Sizing Guide Below BLM21SP700SH1D Murata Electronics 1: 0,473 € 2 408In Stock 16 000Expected 28/01/2027	Mfr. Part No. BLM21SP700SH1D Mouser Part No 81-BLM21SP700SH1D	Murata Electronics	Ferrite Beads 70 OHM Alternate Sizing Guide Below Learn More about Murata Electronics murata blm powertrain safety	Datasheet	2 408In Stock 16 000Expected 28/01/2027	Cut Tape 0,473 € 0,265 € 0,233 € 0,21 € View Reel 0,127 € 0,187 € 0,162 € 0,144 € 0,132 € 0,127 € MouseReel Available	Min.: 1 Mult.: 1 : 4 000
Ferrite Beads 120 OHM Alternate Sizing Guide Below BLM31KN121SH1L Murata Electronics 1: 0,611 € 34 052In Stock 117 500On Order	Mfr. Part No. BLM31KN121SH1L Mouser Part No 81-BLM31KN121SH1L	Murata Electronics	Ferrite Beads 120 OHM Alternate Sizing Guide Below Learn More about Murata Electronics murata blm powertrain safety	Datasheet	34 052In Stock 117 500On Order	Cut Tape 0,611 € 0,428 € 0,377 € 0,335 € View Reel 0,181 € 0,297 € 0,25 € 0,218 € 0,209 € 0,181 € MouseReel Available	Min.: 1 Mult.: 1 : 2 500
Ferrite Beads 800 OHM 2.5A Alternate Sizing Guide Below BLM31KN801SN1L Murata Electronics 1: 0,533 € 30 155In Stock 50 000On Order	Mfr. Part No. BLM31KN801SN1L Mouser Part No 81-BLM31KN801SN1L	Murata Electronics	Ferrite Beads 800 OHM 2.5A Alternate Sizing Guide Below Learn More about Murata Electronics murata blm31kn	Datasheet	30 155In Stock 50 000On Order	Cut Tape 0,533 € 0,371 € 0,323 € 0,288 € View Reel 0,15 € 0,255 € 0,217 € 0,169 € 0,15 € MouseReel Available	Min.: 1 Mult.: 1 : 2 500
Ferrite Beads 800 OHM Alternate Sizing Guide Below BLM31KN801SZ1L Murata Electronics 1: 0,576 € 9 795In Stock	Mfr. Part No. BLM31KN801SZ1L Mouser Part No 81-BLM31KN801SZ1L	Murata Electronics	Ferrite Beads 800 OHM Alternate Sizing Guide Below Learn More about Murata Electronics murata blm powertrain safety	Datasheet	9 795In Stock	Cut Tape 0,576 € 0,396 € 0,344 € 0,307 € View Reel 0,161 € 0,271 € 0,23 € 0,198 € 0,187 € 0,161 € MouseReel Available	Min.: 1 Mult.: 1 Max.: 2 500 : 2 500

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EMI Noise Suppression

Types of Passive Components