MD-0505S feature:
PP plastic bobbin
High stability, with shield case protecting.
Firm structure.
Frenquency range: 30MHZ-200MHZ.
Temperature coefficient: 150ppm/ºC (MAX).
Lead free products RoHS complaint.
Adjustable inductance value, alternate of a brass core will increase the usable frequency range of any specific coils form, but the inductance value will be decreased; if want to increase inductance value,ferrite magnetic core with low Q will be substitute.
When use of a Ferrite or Carbon core, the inductance minimum is measured with core 1/2 way out of top bobbin.
When use of an Aluminum or Brass core, the inductance maximum is measured with core 1/2 way out of top bobbin.