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Component Characteristics Substitution Guide: Ferrite Chip Beads

 »"Z" - Impedance Value (ohm) : typically referenced to 100MHz
Substitution Rule: Typically a component with a higher impedance value (better) can replace a component with a lower impedance value. (Comparison of "Z" impedance curves over frequency is recommended) 
NIC Impedance over Frequency Curves

i.e.… 32ohm impedance can be considered as replacement for 30ohm impedance
i.e.… 120ohm impedance can be considered as replacement for 100ohm impedance
 
 » "DCR" - DC Resistance (ohm)
Substitution Rule: A component with a lower DCR (better) can typically replace a component with higher DCR
 »"DCI" - DC Current (mA or Amp)
Substitution Rule: A component with a higher DCI (better) can typically replace a component with lower DCI.
(Comparison of "DCI" should be under application conditions; Z change with bias, over Temperature) 

 
 
 

 

 

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