1812R-224K

DC Resistance (DCR):	10 Ohm Max
Height - Seated (Max):	0.190" (4.83mm)
Size / Dimension:	0.126" L x 0.126" W (3.20mm x 3.20mm)
Supplier Device Package:	--
Package / Case:	2-SMD
Mounting Type:	Surface Mount
Inductance Frequency - Test:	790kHz
Operating Temperature:	-55°C ~ 125°C
Ratings:	--
Frequency - Self Resonant:	4MHz
Q @ Freq:	40 @ 790kHz
Series:	1812R
Shielding:	Unshielded
Current - Saturation:	--
Current Rating:	142mA
Tolerance:	±10%
Inductance:	220µH
Material - Core:	Ferrite
Type:	--
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Fixed Inductors

Fixed inductors, also known as chokes, are electronic components in which a loop of wire is wound around a core material, usually ferrite or powdered iron, to provide magnetic field for current passing through the wire. They are commonly used in electrical circuits to provide a steady uniform current in a fraction of a second. The 1812R-224K fixed inductor is one such inductor. In this article we will go over its application and working principle.The 1812R-224K fixed inductor is typically used in automotive applications like ECUs (Engine Control Units) and is capable of storing energy generated by internal electrical signals. This energy can then be used to feed back those signals, as well as provide power to other components in the system. This inductor is available in two range sizes: 0.22-0.25mh and 0.50-0.75mh.The 1812R-224K fixed inductor features a low-resistance winding over a ferrite or powdered iron core. This winding creates a resistive force called inductance which opposes changes in the current flowing through it. This resistance is measured in henries (the unit of inductance) and is proportional to the number of turns in the winding. The higher the inductance, the more energy the inductor can store and the greater the back- EMF (back electromotive force) created.In order to better understand the working principle of the 1812R-224K inductor, we can refer to the equation that describes how current, or flux, is produced by a coil when a voltage is applied to it. This equation, known as Faraday’s Law, states that the flux through a coil is equal to the voltage multiplied by the number of turns in the coil. In other words, the more turns in a coil, the greater the flux generated and the higher its inductance.When current is flowing through a coil, an energy field is created in the form of a magnetic field. This field is strongest when the current is changing, or has an alternating current. In the case of the 1812R-224K fixed inductor, this flux is produced by an internal electric field, created by the action of the resistive force created by the inductance. As the current passes through the coil, the flux is increased and back EMF is created. This back EMF helps constrain the flow of current in the circuit, allowing for stable and reliable electrical operation.The 1812R-224K fixed inductor is an excellent choice for automotive applications that require reliable power and stability. Its high inductance allows for greater back EMF and keeps a steady current flowing. This makes it perfect for ECUs which need to be able to respond quickly to rapidly changing input signals, and its small size makes it an easy fit wherever it appears. Additionally, the use of ferrite or powdered iron cores ensures that it is reliable and robust.

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