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roWaves Technologies

Certified Company ISO 9001-2008

FT140-52 Fair-Rite (ferrite toroid 5952020801)

Colour code: grey
Manufacturer code: 5952020801
Ordering code: FT-25
Manufacturer part no.: FT140-52
Material no.: 52
Permeability (μi): 250
Frequency range: 1 – 500MHz (wideband transformer, depends on the application)
RF max. power: 300-400W (1-50MHz broadband transformer)
Temperature stability.: 1000ppm/°C
Ext. diameter: 35.5mm
Int. diameter: 23mm
Height: 12.7mm
Price :


10 in stock

* Toroids are tested for AL values at 10KHz.

52 Material – specifications:

Initial permeabilityµi250
Flux density @ field strengthB
Residual flux densityBr3300Gauss
Coercive forceHc0.6Oersted
Loss factor @ specific freq.Tan δ/ µi45
Temperature coefficient of initial permeability (20 -70°C)0.75%/°C
Curie temperatureTc>250°C
Resistivityρ1 x 10^9ohm-cm

Usable frequency ranges, depending on the application:

broadband transformers: 1 – 50 MHz

high Q inductors: 0.2 – 10 MHz

RFI / EMI / CMC suppression: 1-500 MHz

Additional information

Weight 2 g
Dimensions 0.95 × 0.52 × 0.35 cm


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