2643540002 Fair-Rite

Common applications:

• Impedance matching
  In power HF transformers on the output of MOS-FET or bipolar transistors, the maximum power is estimated at about 200/400W, see application example
  
  
• Choke and EMI filter up to 500 MHz
  Typical impedance
  

  Frequency	1 turn	3 turns
  10 MHz	105Ω	900Ω
  25 MHz	171Ω	1539Ω
  100 MHz	250Ω	650Ω
  250 MHz	255Ω	250Ω

   
• Common mode rejection choke on coaxial cables
  When on the screen of a coaxial cable there is a RF current it is necessary to include a common mode choke, this situation often happens when you change from an unbalanced impedance  to a balanced one (coaxial cable on balanced dipole antenna). This ferrite is compatible with all coaxial cables up to 6mm diameter including RG58, RG223, RG142, etc..., for this application it is recommended a choke impedance of at least 10 times higher than that of the coaxial cable
  

Example of application on coaxial cable

Test conditions: 1m RG58, 35x TF-98
1200Ω @ 1.8 MHz
2600Ω @ 3 MHz
2000Ω @ 10 MHz
900Ω @ 21 MHz
700Ω @ 30 MHz