Fair-Rite Products Corp. EMI Suppression Beads
Fair-Rite offers a comprehensive selection of ferrite EMI suppression beads designed to mitigate electromagnetic interference. These beads are engineered to provide guaranteed minimum impedance specifications, ensuring effective noise suppression across various frequency ranges. They are particularly useful for applications requiring reliable EMI control.
Product Attributes
- Brand: Fair-Rite
- Material: 73 material (for lower frequencies < 50 MHz), 43 material (for broadband frequencies 25-300 MHz), 61 material (for higher frequencies 250-1000 MHz)
- Availability: Available with or without burnishing (last digit of part number: 1=not burnished, 2=burnished). Parylene coating option available (last digit: 4).
Technical Specifications
Dimensions (Bold numbers are in millimeters, light numbers are nominal in inches.)
**Bold part numbers designate preferred parts.
*This dimension may be modified to suit specific applications.
+ Test frequency
Lower Frequencies < 50 MHz (73 material)
| Part Number | A (mm) | B (mm) | C* (mm) | Wt (g) | H (Oe) | Typical Impedance () @ 1 MHz | Typical Impedance () @ 5 MHz | Typical Impedance () @ 10 MHz+ | Typical Impedance () @ 25 MHz+ |
| 2673901301 | .01 | 6.0 | 16 | 0.95 - 0.05 | .150 | 5.3 | 13 | 3.3 | 8.2 |
| 2673004701 | .01 | 4.0 | 24 | 0.45+0.1 | .156 | 3.5 | 8.6 | 2.9 | 7.1 |
| 2673004601 | .01 | 4.7 | 12.5 | 1.1 - 0.1 | .090 | 20.5 | 48.5 | - | - |
| 2673030101 | .01 | 4.1 | 11 | 1.22 - 0.13 | .200 | 3.1 | 7.6 | - | - |
| 2673025301 | .01 | 4.0 | 10 | 1.45 - 0.15 | - | - | - | - | - |
| 2673010101 | .08 | 3.3 | 55 | 1.25 - 0.1 | .150 | 5.3 | 13 | - | - |
| 2673004801 | .03 | 3.1 | 18 | 2.1 - 0.1 | .160 | 1.55 - 0.1 | 0.95+0.15 | 4.2 - 0.25 | - |
| 2673028602 | .07 | 2.7 | 38 | 2.13 - 0.1 | .150 | 1.95 - 0.2 | 1.05+0.1 | 10.40.25 | - |
| 2673012401 | .02 | 3.3 | 11 | 2.0 - 0.15 | .090 | - | - | - | - |
| 2673002201 | .09 | 2.9 | 38 | 2.0 - 0.15 | .410 | - | - | - | - |
| 2673000501 | .01 | 2.8 | 7.5 | 3.50.2 | .150 | - | - | - | - |
| 2673000201 | .04 | 2.8 | 18 | 3.50.2 | .384 | - | - | - | - |
| 2673000101 | .13 | 2.0 | 25 | 0.85+0.1 | .384 | - | - | - | - |
| 2673000301 | .24 | 2.0 | 57 | 0.85+0.1 | .200 | - | - | - | - |
| 2673000701 | .51 | 2.0 | 125 | 1.30.1 | .500 | - | - | - | - |
| 2673022401 | .56 | 1.0 | 54 | 1.45+0.25 | .250 | - | - | - | - |
| 2673021801 | .13 | 1.5 | 94 | 1.65+0.15 | .437 | - | - | - | - |
| 2673018001 | .20 | 1.8 | 29 | 1.65+0.15 | .262 | - | - | - | - |
| 2673004901 | .11 | 1.5 | 40 | 1.65+0.25 | .410 | - | - | - | - |
| 2673001601 | .13 | 1.8 | 16 | 1.65+0.25 | .122 | - | - | - | - |
| 2673015301 | .32 | 1.5 | 41 | 1.80.15 | .270 | - | - | - | - |
| 2673000801 | 1.4 | 1.0 | 48 | 2.25+0.25 | .297 | - | - | - | - |
| 2673200201 | 1.6 | 1.1 | 110 | 2.650.25 | .812 | - | - | - | - |
| 2673003201 | 1.0 | 1.1 | 60 | 2.650.25 | .500 | - | - | - | - |
| 2673002402 | 1.2 | 0.59 | 19 | 5.00.2 | .190 | - | - | - | - |
Broadband Frequencies 25-300 MHz (43 material)
| Part Number | A (mm) | B (mm) | C* (mm) | Wt (g) | H (Oe) | Typical Impedance () @ 10 MHz | Typical Impedance () @ 25 MHz+ | Typical Impedance () @ 100 MHz+ | Typical Impedance () @ 250 MHz |
| 2643004601 | .01 | 4.7 | 12.5 | 1.1 - 0.1 | .156 | 12.5 | 26 | - | - |
| 2643004701 | .01 | 4.0 | 31 | 1.45 - 0.15 | .090 | 31 | - | - | - |
| 2643000101 | .10 | 2.0 | 26 | 1.650.025 | .140 | 40 | - | - | - |
| 2643020501 | .02 | 3.4 | 17 | 2.1 - 0.15 | .060 | 31 | - | - | - |
| 2643004801 | .03 | 3.1 | 18 | 2.0 - 0.15 | .150 | 31 | - | - | - |
| 2643002201 | .08 | 2.9 | 34 | 2.0 - 0.15 | .410 | 58 | - | - | - |
| 2643000201 | .03 | 2.8 | 16 | 1.05+0.1 | .060 | 22 | - | - | - |
| 2643000501 | .01 | 2.8 | 9 | 1.65 - 0.25 | .236 | - | - | - | - |
| 2643000301 | .18 | 2.0 | 46 | 1.30.1 | .236 | 60 | - | - | - |
| 2643000701 | .38 | 2.0 | 125 | 1.30.1 | .500 | 89 | - | - | - |
| 2643005701 | .81 | 1.2 | 78 | 2.30.2 | .500 | 120 | - | - | - |
| 2643001301 | .18 | 1.6 | 31 | 1.65+0.25 | .234 | 48 | - | - | - |
| 2643013801 | .12 | 1.6 | 38 | 1.65+0.25 | .160 | 19 | - | - | - |
| 2643001601 | .09 | 1.6 | 24 | 1.65+0.15 | .122 | 30 | - | - | - |
| 2643004101 | .11 | 2.6 | 48 | 0.75+0.1 | .175 | 70 | - | - | - |
| 2643706001 | .06 | 2.5 | 26 | 0.8+0.1 | .097 | 45 | - | - | - |
| 2643200101 | .19 | 1.4 | 41 | 1.45+0.25 | .125 | 55 | - | - | - |
| 2643022401 | .38 | 1.5 | 82 | 1.45+0.25 | .250 | 96 | - | - | - |
| 2643021801 | .67 | 1.5 | 131 | 1.45+0.25 | .437 | 192 | - | - | - |
| 2643023801 | 1.4 | 1.5 | 266 | 1.45+0.25 | .900 | - | - | - | - |
| 2643023201 | .06 | 1.8 | 30 | 1.65+0.15 | .147 | 15 | - | - | - |
| 2643001501 | .10 | 1.7 | 35 | 1.60.1 | .128 | 21 | - | - | - |
| 2643025601 | .18 | 1.7 | 55 | 1.60.1 | .236 | 38 | - | - | - |
| 2643000801 | 1.0 | 1.0 | 63 | 2.25+0.25 | .297 | 92 | - | - | - |
| 2643003201 | .87 | 1.1 | 60 | 2.650.25 | .500 | 200 | - | - | - |
| 2643250402 | 1.2 | 0.91 | 69 | 2.95+0.45 | .250 | 102 | - | - | - |
| 2643250302 | 1.5 | 0.91 | 85 | 2.95+0.45 | .250 | 122 | - | - | - |
| 2643250202 | 2.5 | 0.91 | 135 | 2.95+0.45 | .250 | 200 | - | - | - |
| 2643375102 | 1.4 | 0.60 | 35 | 4.5+0.75 | .375 | 50 | - | - | - |
| 2643375002 | 3.1 | 0.60 | 78 | 4.5+0.75 | .375 | 115 | - | - | - |
| 2643006302 | 2.2 | 0.60 | 53 | 4.75+0.3 | .375 | 80 | - | - | - |
| 2643023402 | 3.4 | 0.60 | 83 | 4.75+0.3 | .375 | 120 | - | - | - |
| 2643023002 | 4.1 | 0.60 | 100 | 4.75+0.3 | .375 | 145 | - | - | - |
| 2643002402 | 1.1 | 0.59 | 26 | 5.00.2 | .197 | 43 | - | - | - |
| 2643012702 | 1.3 | 0.51 | 24 | 6.350.15 | .250 | 38 | - | - | - |
| 2643300101 | 2.1 | 1.0 | 115 | 7.60.25 | .595 | 88 | - | - | - |
Higher Frequencies 250-1000 MHz (61 material)
| Part Number | A (mm) | B (mm) | C* (mm) | Wt (g) | H (Oe) | Typical Impedance () @ 100 MHz | Typical Impedance () @ 250 MHz+ | Typical Impedance () @ 500 MHz+ | Typical Impedance () @ 1000 MHz |
| 2661000101 | .10 | 2.0 | 3.50.2 | .138 | .128 | 3.250.25 | - | - | - |
| 2661000301 | .18 | 2.0 | 3.50.2 | .138 | .236 | 6.00.25 | - | - | - |
| 2661000701 | .38 | 2.0 | 3.50.2 | .138 | .500 | 12.70.35 | - | - | - |
| 2661022401 | .38 | 1.5 | 5.10.25 | .200 | .236 | 6.350.25 | - | - | - |
| 2661021801 | .67 | 1.5 | 5.10.25 | .200 | .437 | 11.10.35 | - | - | - |
| 2661023801 | 1.4 | 1.5 | 5.10.25 | .200 | .900 | 22.850.75 | - | - | - |
| 2661030101 | .01 | 4.1 | 1.22 - 0.13 | .045 | .200 | 5.3 - 0.45 | - | - | - |
| 2661002201 | .08 | 2.9 | 1.95 - 0.2 | .072 | .410 | 10.40.25 | - | - | - |
| 2661000801 | 1.0 | 1.0 | 7.50.25 | .296 | .297 | 7.550.25 | - | - | - |
| 2661250402 | 1.2 | 0.91 | 6.350.15 | .250 | .190 | 12.70.5 | - | - | - |
| 2661375102 | 2.5 | 0.91 | 6.350.15 | .250 | .190 | 25.40.75 | - | - | - |
| 2661002402 | 1.1 | 0.59 | 9.650.25 | .380 | .197 | 5.05 - 0.45 | - | - | - |
| 2661005701 | 0.81 | 1.2 | 5.10.25 | .200 | .500 | 12.70.35 | - | - | - |
| 2661250202 | 1.4 | 0.91 | 6.350.15 | .250 | .190 | 12.70.5 | - | - | - |
Note: The column "H (Oe)" gives the calculated dc bias field in oersted for 1 turn and 1 ampere direct current. The actual dc H field in the application is this value of "H" times the actual NI (ampere-turn) product. The minimum guaranteed impedance is the listed typical impedance less 20%.
Performance curves of all listed EMI suppression beads are compiled on the Fair-Rite Products CD-ROM. For larger suppression cores, refer to the section "Round Cable EMI Suppression Cores" found on pages 70-74. For any EMI suppression bead requirement not listed here, feel free to contact Fair-Rite customer service. The "Shield Bead Kit" (part number 0199000019) contains a selection of these beads.
Explanation of Part Numbers: Digits 1&2 = product class, 3&4 = material grade and last digit 1= not burnished, 2 = burnished and 4 = Parylene coated.
2412161842_Fair-Rite-2643000301_C5499060.pdf
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EMI noise suppression solutions including Fair-Rite 2643000301 ferrite beads for electronic circuits Images
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