Series:	LK
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Multilayer
Material - Core:	--
Inductance:	47nH
Tolerance:	±20%
Current Rating:	300mA
Current - Saturation:	--
Shielding:	Unshielded
DC Resistance (DCR):	100 mOhm Max
Q @ Freq:	15 @ 50MHz
Frequency - Self Resonant:	320MHz
Ratings:	--
Operating Temperature:	-40°C ~ 85°C
Inductance Frequency - Test:	50MHz
Mounting Type:	Surface Mount
Package / Case:	0805 (2012 Metric)
Supplier Device Package:	0805 (2012 Metric)
Size / Dimension:	0.079" L x 0.049" W (2.00mm x 1.25mm)
Height - Seated (Max):	0.057" (1.45mm)

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Fixed Inductors

Inductors are electronic components which store electrical energy in the form of a magnetic field. They are used in many electrical and electronic systems such as: power supplies, filters, amplifiers, electronics circuits, and motor drives. The LK212547NM-T fixed inductor from TDK is an example of a popular fixed inductor used widely in industrial, consumer and automotive electronics.

Application Field of LK212547NM-T Fixed Inductors

The LK212547NM-T fixed inductor is designed for applications where high frequency, medium power, and high current are needed. This inductor offers low DCR, high current capabilities, and high frequency operation. This low profile chip-type inductor is an ideal solution for high power applications such as automotive ECU, electronic components such as servers, and consumer devices such as smartphones.The LK212547NM-T has a rated operating temperature of -40°C to +125°C, allowing it to operate in a wide range of industrial conditions. It also has a high surge current rating of 18.2A. This unit is offered in two different versions, the standard version and high current version. The high current version is designed for applications that require high surge currents, like power supplies. In addition, the LK212547NM-T is UL/CSAus approved and RoHS compliant. This fixed inductor is offered with a variety of inductance values, ranging from 33nH to 680nH, depending on the version and application. This wide range of inductance values offers the customer greater flexibility when selecting a inductor for their application.

Working Principle of the LK212547NM-T Fixed Inductor

Fixed inductors are basically coils consisting of a number of turns of a conductive wire, usually copper. The turns establish a magnetic field when a current passes through them. This magnetic field stores the current in the form of inductance, and when the current is removed the magnetic field slowly collapses and returns the stored energy. The inductance value of the LK212547NM-T fixed inductor is determined by the number of turns of the coil and the type of core material used. The core material can be either ferrite or powdered iron. Ferrite is a ceramic material, while powdered iron is a soft magnet. The type of core material affects the inductance by affecting the strength of the magnetic field.When the current flows through the coil of the LK212547NM-T, an alternating magnetic field is generated in the core and inducedvoltage is generated in the coil. This induced voltage opposes the current flowing in the coil, and dissipates the energy as heat. That is why heat is generated when the current passes through a fixed inductor. The heat generated by the LK212547NM-T inductor is very low compared to other inductors since the copper is encased in a protective shell made of epoxy resin. The LK212547NM-T can also be used in AC circuits, where its inductance causes a phase shift between current and voltage. This shift can provide isolation between input and output, leading to reduced interference and lower losses. This allows the LK212547NM-T to be used in applications requiring AC isolation such as audio systems and medical instruments.

Conclusion

The LK212547NM-T fixed inductor from TDK is a popular inductor with a wide range of applications in industrial, automotive, and consumer electronics. Its low profile and high current capabilities make it ideal for a wide range of applications. Its high surge current rating and wide range of inductance values give the user greater flexibility when selecting a fixed inductor for their application. The core material of the inductor determines its inductance value and the protective shell of epoxy resin keeps the heat generated by its operation to a minimum. Finally, the LK212547NM-T can be used in AC circuits for isolation of input and output signals and is UL/CSAus approved and RoHS compliant.

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