SPM4020T-4R7M TDK Corporation FIXED IND 4.7UH 2.2A 144.1 MOHM


The part number SPM4020T-4R7M specifies a fixed inductor manufactured by TDK Corporation. Here are the details regarding this inductor:


  • Manufacturer: TDK Corporation
  • Type: FIXED IND (Fixed Inductor)
  • Inductance: 4.7 µH (microhenries)
  • Current Rating: 2.2A (Amperes)
  • DC Resistance: 144.1 mOhms (milliohms)

This fixed inductor is designed to have an inductance of 4.7 µH, enabling it to store energy in a magnetic field when current flows through it. The 2.2A current rating specifies the maximum continuous current that the inductor can handle without exceeding its temperature and performance limits.

The DC resistance of 144.1 mOhms represents the resistance to the flow of direct current through the inductor, which is important as it affects the overall circuit's impedance and power dissipation.

This inductor may find applications in various electronic circuits such as power supplies, voltage regulation, filtering, and other circuit designs where inductors are necessary.