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SMT & SMD Power Inductor Specifications

 

Inductor (Inductors, Power Inductors) - Inductors:

Application: Signals. To filter noise. Resonator.

  • A mobile phone uses some HCI,TRQ to isolate certain frequencies and receive the correct frequency.
  • We need some inductors on the signal board of the monitor or LCD monitor, electronic equipment, ...Etc.
  • The working frequency would be much larger than of the power inductor
  • Main concerns are the Q value and SRF (Self-resonating frequency)
  • For example: TRQ*C series are power inductors, so their IDC is larger than TRQ*N.
    TRQ*N series are more concerned with the Q value, TRQ*C isn't concerned with the Q.

Some inductors could be used as power inductors and (signal) inductors depending on the engineers' design.

The power inductor (Power application, choke):

  • An inductor is used for power systems in electronic equipment, such as:
    PC, Notebook PC, Communication instruments.
  • Power systems:
    Switching power supply.
    Inverter (LCD back light)
    Converter (DC-DC)
  • For example: An inverter of a backlight of an LCD panel, The converter of a notebook PC.
  • The main concern is the IDC, because it has to load some current when it is working.
  • The working frequency would be around 300KHz to 1MHz (P4 CPU up to 600KHz)
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