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EMI Suppression Beads (2643021801)

Part Number: 2643021801
43 SHIELD BEAD
Broadband Frequencies 25-300 MHz (43 material)
Suppression Components
Board Component
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Part Number: 2643021801

43 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.

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

Weight: 0.67 (g)

Dimmmmm tolnominal inchinch misc.
A5.1±0.250.2_
B1.45+0.250.062_
C11.1±0.350.437_

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)
10 MHz62
25 MHz+96
100 MHz+131
250 MHz151
Electrical Properties
H(Oe)1.5

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%.

•Single turn impedance tests for 73 and 43 material beads are performed on the 4193A Vector Impedance Analyzer. The 61 material beads are tested on the 4291A RF Impedance Analyzer. Beads are tested with the shortest practical wire length.

Typical Impendance (Ω)
10 MHz 62
25 MHz+ 96
100 MHz+ 131
250 MHz 151

This NiZn is our most popular ferrite for suppression of conducted EMI from 20 MHz to 250 MHz. This material is also used for inductive applications such as high frequency common-mode chokes.

Available in 43 material:
EMI Suppression Beads
Beads On Leads
SM beads
Multi-Aperture Cores
Round Cable EMI Suppression Cores
Round Cable Snap-Its
Flat Cable EMI Suppression Cores
Flat Cable Snap-Its
Miscellaneous Suppression Cores
Bobbins
Toroids

43 Material Characteristics
Property Unit Symbol Value
Initial Permeability@ B < 10 gauss µi 800
Flux Density @ Field Strength Gauss
Oersted
B
H
2900
10
Residual Flux Density Gauss Br 1300
Coercive Force Oersted Hc 0.45
Loss Factor @ Frequency 10 -6
MHz
Tan δ/ µi 250
1.0
Temperature Coefficient of Initial Permeability (20 -70°C) %/°C 1.25
Curie Temperature °C Tc >130
Resistivity ohm-cm ρ 1×105

**** 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.

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.


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