ELJ-PA221KF Inductors, Coils, Chokes

DC Resistance (DCR):	11 Ohm Max
Height - Seated (Max):	0.094" (2.40mm)
Size / Dimension:	0.126" L x 0.098" W (3.20mm x 2.50mm)
Supplier Device Package:	--
Package / Case:	1210 (3225 Metric)
Mounting Type:	Surface Mount
Inductance Frequency - Test:	796kHz
Operating Temperature:	-20°C ~ 85°C
Ratings:	--
Frequency - Self Resonant:	4MHz
Q @ Freq:	20 @ 796kHz
Series:	PA
Shielding:	Unshielded
Current - Saturation:	--
Current Rating:	60mA
Tolerance:	±10%
Inductance:	220µH
Material - Core:	Ferrite
Type:	Wirewound
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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ELJ-PA221KF Application Field and Working PrincipleThe ELJ-PA221KF is a surface mount fixed inductor, more formally known as a multi-layer chip inductor. This type of inductor has a wide range of application fields, but it\'s most commonly used in power supplies and other applications that require stable current regulation. Its operating principle is based on the ability of the inductor to store energy in the form of an electro-magnetic field, which dissipates over time. This helps to regulate the amount of current that can flow through the inductor.The ELJ-PA221KF is a surface mount fixed inductor, with a maximum operating frequency of 106 MHz and a rated current of 1000 mA. It is made of a ferrite core with a thin-film multi-layer structure. The core of the ELJ-PA221KF is made of non-magnetic ferrite, and the inductance is achieved by applying a high-frequency current to the inductor and storing an electro-magnetic field within the device.In terms of applications, the ELJ-PA221KF has a wide range of use cases. It is often used in power supplies, motor control applications, and current-sense circuits. It can also be used for RF filtering, such as in cellular reception equipment and consumer electronics. In addition, the ELJ-PA221KF is compatible with high-speed logic signals, and can be used for high-frequency power converters, such as in PCs or notebooks.The ELJ-PA221KF\'s operating principle is based on the Faraday\'s law of induction. This law states that a changing current produces a changing magnetic field. When this happens, the magnetic field induces a potential in a surrounding coil. This induced potential is called a back EMF (electromotive force). This back EMF helps to regulate the current that can flow through the inductor.When the ELJ-PA221KF is used in an application, the frequency of the operating current is important, as it will determine the value of the induced EMF. The higher the frequency, the higher the back EMF. This means that the higher the frequency, the more current is allowed through the inductor.In summary, the ELJ-PA221KF is a surface mount fixed inductor, suitable for power supplies, motor control applications, and current-sense circuits. Its operating principle is based on Faraday’s law of induction, in which the frequency of the operating current is important in the magnitude of the induced EMF. As such, this device works as a regulator for the amount of current that can flow through the inductor.

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