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EMI Suppression Beads (2661375102)

Part Number: 2661375102
61 SHIELD BEAD
61 Material™
Suppression Components
Board Component
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Part Number: 2661375102

61 SHIELD BEAD

Explanation of Part Numbers:
– Digits 1 & 2 = Product Class
– Digits 3 & 4 = Material Grade
– Last digit 1= Not Burnished 2 = Burnished
– The last digit of the Parylene coated part is a “4,” which is available upon request. The minimum coating thickness beads is 0.005 mm (0.0002″).

Fair-Rite offers a broad selection of ferrite EMI suppression beads with guaranteed minimum impedance specifications.

Our “Shield Bead Kit” (part number 0199000019) contains a selection of these beads.

For any EMI suppression bead requirement not listed here, feel free to contact our customer service for availability and pricing.

Catalog Drawing
3D Model

The C dimension, the bead length, can be modified to suit specific applications.

Weight: 2.5 (g)

Dimmmmm tolnominal inchinch misc.
A9.5±0.250.374_
B4.5+0.750.192_
C6.35±0.350.25_

Chart Legend
+ Test frequency
•The column u201cH (Oe)u201d 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 u201cHu201d 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 MHz53
250 MHz+74
500 MHz+97
1000 MHz146
Electrical Properties
H(Oe)0.6

Suppression beads are controlled for impedances only. Minimum impedance values are specified for the + marked frequencies. The minimum impedance is typically the listed impedance less 20%.

Catalog Drawing

Single turn impedance tests for 73 and 43 material beads are performed on the E4990A Impedance Analyzer. The 61 material beads are tested on the E4991A / HP4291B Impedance Analyzer. Beads are tested with the shortest practical wire length.

Typical Impendance (Ω)
100 MHz 42
250 MHz+ 63
500 MHz+ 83
1000 MHz 117

CSV Download

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

Specific Heat
0.25 cal/g/°C
Thermal Conductivity
3.5 - 4.5 mW/cm-°C
Coefficient of Linear Expansion
8 - 10x10-6/°C
Tensile Strength
4.9 kgf/mm2
Compressive Strength
42 kgf/mm2
Young's Modulus
15x103 kgf/mm2
Hardness (Knoop)
650
Specific Gravity
≈4.7 g/cm3
The above quoted properties are typical for Fair-Rite MnZn and NiZn ferrites.


Storage and Operating Temperature
Printer Friendly Data Sheet - Download as pdf file

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