roWaves Technologies

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Fair-Rite 0431167281 clamp-on ferrite | FC-31 material

Colour code: black
Manufacturer code: 0431167281
Ordering code: FT-39
Manufacturer part no.: FC31-167281
Material no.: 31
Permeability (μi): 1500
Clamp-on suitable for : wires up to 10mm diam.
Clamp-on suitable for coax.: RG8 / RG213 & 400 series
Typ. impedance: 17.7Ω@1MHz / 65Ω@5MHz / 88Ω@10MHz / 136@25MHz / 239Ω@100MHz / 284Ω@250MHz
Frequency range: 1 – 300MHz (EMI/RFI supression)
Length: 39.4mm
Ext. width: 23.7mm
Ext. height: 11.7mm
Int. diam.: 10.15mm
Price :

 4,09 (excl. VAT)

6 in stock

(*Ships in 1-2 business days. VAT amount and the exact shipping cost will be calculated during checkout.)

* Toroids are tested for AL values at 10KHz.

31 Material – specifications:

Initial permeabilityµi1500
Flux density @ field strengthB
Residual flux densityBr3200Gauss
Coercive forceHc0.28Oersted
Loss factor @ specific freq.Tan δ/ µi20
Temperature coefficient of initial permeability (20 -70°C)1.6%/°C
Curie temperatureTc>130°C

FT240-31 Impedance

Very effective at suppressing common mode noise in the 1 to 30MHz region if the cable to be suppressed can be wound through the core a number of times. Ideal for use on RG8, RG213, and 400 series cables. Also ideal for use on IEC power cables to suppress noise in the HF bands from computer display monitors.

Usable frequency ranges, depending on the application:

RFI / EMI / CMC suppression: 1-300 MHz

Technical data-sheet:

Additional information

Weight 33 g
Dimensions 4 × 2,4 × 2,4 cm


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