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EMI Suppression Beads (2673000501)

Part Number: 2673000501
73 SHIELD BEAD
Lower Frequencies < 50 MHz (73 material)
Suppression Components
Board Component
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EMI Suppression Beads

Part Number: 2673000501

73 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: 0.01 (g)

Dimmmmm tolnominal inchinch misc.
A2-0.150.076_
B1.05+0.100.043_
C1.65-0.250.06_

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)
1 MHz2.1
5 MHz6.3
10 MHz+7.5
25 MHz+12
Electrical Properties
H(Oe)2.8

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)
1 MHz 2.1
5 MHz 6.3
10 MHz+ 7.5
25 MHz+ 12

A MnZn ferrite supplied only in small cores to suppress conducted EMI frequencies below 50 MHz.

Available in 73 material:
EMI Suppression Beads
Beads On Leads
SM beads
Multi-Aperture Cores

73 Material Characteristics
Property Unit Symbol Value
Initial Permeability @ B < 10 gauss µi 2500
Flux Density @ Field Strength Gauss
Oersted
B
H
3900
5
Residual Flux Density Gauss Br 3200
Coercive Force Oersted Hc 0.28
Loss Factor @ Frequency 10 -6
MHz
Tan δ/ µi 20
0.1
Temperature Coefficient of Initial Permeability (20 -70°C) %/°C 1.3
Curie Temperature °C Tc >130
Resistivity ohm-cm ρ 3000

**** 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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