8250-221K-RC

DC Resistance (DCR):	3.48 Ohm Max
Height - Seated (Max):	--
Size / Dimension:	0.164" Dia x 0.450" L (4.17mm x 11.43mm)
Supplier Device Package:	--
Package / Case:	Axial
Mounting Type:	Through Hole
Inductance Frequency - Test:	790kHz
Operating Temperature:	-55°C ~ 105°C
Ratings:	--
Frequency - Self Resonant:	9.4MHz
Q @ Freq:	65 @ 790kHz
Series:	8250
Shielding:	Shielded
Current - Saturation:	80mA
Current Rating:	251mA
Tolerance:	±10%
Inductance:	220µH
Material - Core:	Ferrite
Type:	Wirewound
Part Status:	Active
Packaging:	Bulk

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Fixed InductorsFixed inductors are components used in electronic circuits to introduce inductance. This type of inductor, also known as a “choke,” is used to filter unwanted high frequency signals in a power circuit while allowing the desired signal to pass through. They are made of either an air core or a ferrite core usually wound with copper or aluminum wire. These inductors are widely used in both AC and DC power circuits for a variety of different applications.The 8250-221K-RC is a fixed inductor that is especially suitable for filtering and suppressing high-frequency noise in motor control systems. It has a maximum operating temperature of 85°C and a rated voltage of DC 500V, with an inductance range of 0.225mH to 0.3mH. This fixed inductor is RoHS compliant and boasts inductance stability K against temperature.The working principle of the 8250-221K-RC is based on Faraday law and Lenz’s law. Faraday’s law states that the magnitude of the induced electromotive force (EMF) in a closed circuit is equal to the rate of change of magnetic flux in the circuit. Whenever the number of turns of the coil is increased or decreased, the rate of change of magnetic flux in the circuit is also changed resulting in the production of an induced EMF. This induced EMF is in turn used to create the desired inductance in the 8250-221K-RC coil.Lenz’s law states that the induced EMF has a self-induced current in the same direction as that of the applied current. That is, the current is self-induced due to the opposing flux created by the coil. This opposing flux is used to produce the inductance in the 8250-221K-RC coil.The 8250-221K-RC fixed inductor is used in a variety of applications, such as motor control, power line filtering, and EMI suppression. In motor control systems, it is used to block switching pulse, reduce motor noise, and to reduce power consumption. In power line filtering applications, it is used to reduce conducted and radiated EMI in AC, DC, and signal lines. And in EMI suppression applications, it is used to attenuate and reduce EMI interference.The 8250-221K-RC fixed inductor has numerous advantages over traditional inductors. Compared to standard ferrite inductors, the 8250-221K-RC has a much higher inductance stability K against temperature, better tolerance, and higher power ratings. It also runs at much lower temperatures than traditional inductors, making it ideal for applications where thermal management is critical.In conclusion, the 8250-221K-RC fixed inductor is an essential component used in a variety of electronic systems to filter and suppress high-frequency noise. It has the advantages of higher inductance stability K against temperature, higher power ratings, better tolerance, and lower temperatures when compared to standard ferrite inductors. The working principle of the 8250-221K-RC is based on Faraday law and Lenz’s law.

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