Round Cable EMI Suppression Cores (2661480002)
61 ROUND CABLE CORE
61 Material™
Suppression Components
Cable Component
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Part Number: 2661480002
61 ROUND CABLE CORE
Explanation of Part Numbers:
– Digits 1 & 2 = Product Class
– Digits 3 & 4 = Material Grade
– Last digit 2 = Burnished (All cable cores have been burnished to remove the sharp edges)
Fair-Rite offers a broad selection of ferrite EMI suppression cable cores in several materials with guaranteed minimum impedance specifications.
For smaller suppression parts, refer to the section EMI Suppression Beads.
Our Expanded Cable and Suppressor Kit (part number 0199000005) contains a selection of these suppression cores.
For any cable suppression core not listed here, feel free to contact our customer service group for availability and pricing.
The C dimension, the core length, can be modified to suit specific applications.
Weight: 12 (g)
| Dim | mm | mm tol | nominal inch | inch misc. |
| A | 12.3 | ±0.40 | 0.484 | _ |
| B | 4.95 | ±0.25 | 0.2 | _ |
| C | 25.4 | ±0.75 | 1 | _ |
| Cable Information | |||
| Max Diameter | Max Dimension | Solid Equivalent | Flat Cable Cores |
| 0 0 | _ | 0461164951 | - |
Chart Legend
+ Test frequency
The column “H (Oe)” gives for each bead 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. For the effect of the dc bias on the impedance of the bead material, see figures 18-23 in the application note How to choose Ferrite Components for EMI Suppression.
| Typical Impedance (Ω) | |
| 100 MHz | 230 |
| 250 MHz+ | 342 |
| 500 MHz+ | 448 |
| 1000 MHz | 490 |
| Electrical Properties | |
| H(Oe) | 0.52 |
Suppression cable cores are controlled for impedances only. Minimum impedance values are specified for the + marked frequencies. The minimum impedance is typically the listed impedance less 20%.
Single turn impedance tests for 31, 43 and 46 material cores are performed on the E4991A/HP4291B Impedance Analyzer. The 61 material parts are tested on the E4991A / HP4291B Impedance Analyzer and 75 material parts are tested on the E4990A Impedance Analyzer. Cores are tested with the shortest practical wire length.
| Typical Impendance (Ω) | |
| 100 MHz | 210 |
| 250 MHz+ | 325 |
| 500 MHz+ | 395 |
| 1000 MHz | 415 |
A high frequency NiZn ferrite developed for a range of inductive applications up to 25 MHz. This material is also used in EMI applications for suppression of noise frequencies above 200 MHz. Excellent stability characteristics.
Strong magnetic fields or excessive mechanical stresses may result in irreversible changes in permeability and losses.
Available in 61 material™:
EMI Suppression Beads
Beads On Leads
SM beads
Wound Beads
Multi-Aperture Cores
Round Cable Snap-Its
Toroids
Rods
Antenna/RFID
Rods
Round EMI Suppression Cores
61 Material™ Characteristics
| Property | Unit | Symbol | Value |
| Initial Permeability @ B < 10 gauss | µi | 125 | |
| Flux Density @ Field Strength | Gauss Oersted |
B H |
2500 15 |
| Residual Flux Density | Gauss | Br | 1000 |
| Coercive Force | Oersted | Hc | 1.2 |
| Loss Factor @ Frequency | 10 -6 MHz |
Tan δ/ µi | 90 10 |
| Temperature Coefficient of Initial Permeability (20 -70°C) | %/°C | .10 | |
| Curie Temperature | °C | Tc | >300 |
| Resistivity | ohm-cm | ρ | 1×108 |
**** Characteristic curves are measured on standard Toroids (18/10/6 mm) at 25°C and 10 kHz unless otherwise indicated. Impedance characteristics are measured on standard shield beads (3.5/1.3/6.0 mm) unless otherwise indicated.
Material Safety Data Sheet (MSDS)
Click here to download Complex Permeability vs. Frequency (CSV)
Click here to download 61 Material Power Loss Density vs. Flux Density at 25°C
Ferrite Material Constants
Storage and Operating Temperature
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