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Model: FB-31-1020
Nyíregyháza (HU): 19 pieces in stock
Budapest (HU): 13 pieces in stock
For EU private customers:
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3.58 EUR (3.01 EUR + VAT)


AMIDON FB-31-1020 FERRITE BEADS. Best for RF chokes. Al=5700. Due to large inner diameter, it is easily applicable on RG213, RG8 coax cables.

Physical Dimensions

OD(A) = 1.020 in / 25.90 mm +/- 0.75 mm
ID(B) = 0.505 in. / 12.80 mm +/- 0.25 mm
Ht(C) = 1.125 in. / 28.60 mm +/- 0.80 mm
 AL=5700 +/- 20 %      uH=(AL*Turns2)/1000 
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 16000
Color Code = shiny black
Application Freq Range
RFI Suppression 1 - 300 MHz

The Al-factor and 1 turn Z impedance FRQ charts of the ferrite core can be downloaded from the attached documents. 

Weight 55 g
Material MnZn (31)
Impedance min 260 Ω @ 100 MHz ± 20%
RoHS compliant yes


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