FT290-43

• Material: 
  43
• Permeability (µ_i): 
  800
• A_L (nH): 
  1300
• Outer diameter (metric): 
  73.65 mm
• Inner diameter (metric): 
  38.85 mm
• Height (metric): 
  12.7 mm
• Outer diameter (imperial): 
  2.9 in
• Inner diameter (imperial): 
  1.53 in
• Height (imperial): 
  0.5 in

Toroid for broadband and EMI filters

Suitable for HF high power balun up to 1.5 kW.

Example application of a 1:1 balun in HF band.

Note: for the proper operation of a 1:1 balun it is suggested an impedance of at least 500 Ohms (preferably 1000), this gives the possibility to obtain a good symmetrization of the coaxial cable on a balanced load.

Frequency range by application:
- EMI/RFI suppression: 25 - 300 MHz
- Inductive: <10 MHz
- Power magnetics: -