EMI Suppression Beads (2643013801)

Part Number: 2643013801

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.

Catalog Drawing
3D Model

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

Weight: 0.12 (g)

Dimmmmm tolnominal inchinch misc.
A3.5±0.200.138_
B1.65+0.250.07_
C4.05±0.250.159_

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 MHz14.5
25 MHz+23
100 MHz+36
250 MHz40
Electrical Properties
H(Oe)1.6

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)
10 MHz14
25 MHz+24
100 MHz+38
250 MHz52

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Fair-Rite Products Corp.     One Commercial Row, Wallkill, New York 12589-0288
888-324-7748      845-895-2055      Fax: 845-895-2629      [email protected]      www.fair-rite.com