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2843002302 | Fair-Rite BN43-2302 | multi-aperture core

Colour code: black
Manufacturer code: 2843002302
Ordering code: FT-28
Manufacturer part no.: BN43-2302
Material no.: 43
AL: 1050nH
Permeability (μi): 850
Frequency range: 5 – 400MHz (wideband transformer, depends on the application)
RF max. power: 0.1W (broadband transformer 0.5-30MHz)
Temperature stability.: 12500ppm/°C
Length: 3.45mm
Width: 2.35mm
Height: 2mm
Core holes: 0.75mm int.
Price :

 0,21 (excl. VAT)

559 in stock

* Toroids are tested for AL values at 10KHz.

43 Material – specifications:

Initial permeabilityµi800
Flux density @ field strengthB
Residual flux densityBr1300Gauss
Coercive forceHc0.45Oersted
Loss factor @ specific freq.Tan δ/ µi250
Temperature coefficient of initial permeability (20 -70°C)1.25%/°C
Curie temperatureTc>130°C

Usable frequency ranges, depending on the application:

broadband transformers: 5 – 400 MHz

power transformers: 0.5 – 30 MHz

RFI / EMI / CMC suppression: 5 – 500 MHz

✔️ common mode chokes (CMC): material 43 it is a very good solution for suppressing common broadband currents in the range of 10 – 600 MHz. Along with the increase no. of turns, the suppression increases, while the max. usable freq. will decrease.

✔️ broadband transformers: excellent impedance transformers can be made in the frequency range from 2 to 50 MHz Typical applications are impedance transformers for EndFed antennas, impedance transformers for OCFD antennas or BalUn 1: 1. Full technical specifications (including catalog description) at “Downloads”.

Technical data-sheet:

Additional information

Weight 0,1 g
Dimensions 1,3 × 0,7 × 0,6 cm


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