3090-821G Datasheet/PDFFixed inductors, also known as coils, are passive electronic components. They are made of a wire wound around some materials like coils, iron cores, ferrites, etc. The wire forms an inductor, which can store and transfer energy.Fixed Inductors offer higher inductance than other types, making them more suitable for applications that require very high inductance such as those within the audio industry. They can also be adapted to work in high voltage applications.3090-821G is an encapsulated fixed inductor recommended for use in areas where a very strong magnetic field is needed, such as radio frequency amplifiers and medical equipment. It has a relatively small form factor as well as shielded construction to ensure that there is minimal interference.
Application Field:
3090-821G is designed primarily for applications that require high inductance, such as radio frequency amplifiers, medical electronics and ICs requiring high-speed switching. Additionally, as they are shielded and have a relatively small form factor, they are suitable for use in SMD applications in which a high level of electrical noise suppression is necessary. Additionally, they are used as filters in power supplies and in the production of other inductors.
Working Principle:
The 3090-821G fixed inductors rely on Faraday’s Law of Induction, a fundamental law of electromagnetism. When electricity flows through a conductor, such as the wire in the coil, it produces a magnetic field around it. This magnetic field produces an electromotive force, which causes a current to flow in the conductor. This current is called the induced current. The size of the induced current will depend on the amount of electricity and the size of the coil. The induced current\'s magnitude is equal to the rate of change of the magnetic field.
The fixed inductor, also known as a self-inductance coil, uses this induced current to transfer and store energy. The inductor stores energy in the form of a magnetic field, which is released back into the circuit as the current changes. The magnitude of the current will depend on the size of the coil and the voltage applied to the circuit. As the voltage changes, the amount of current will also change, allowing the inductor to transfer energy to the circuit. This transfer can be used to create a wide variety of electronic circuits, from RF amplifiers to medical electronics.
Conclusion:
The 3090-821G Fixed Inductor is a high-performance inductor that complies with MIL-STD-202F requirements. It is designed to handle high frequencies and high-voltage applications while providing reliable performance. The encapsulated construction ensures minimal interference and is suitable for use in SMD applications. The high inductance offered by the 3090-821G makes it ideal for use in RF amplifiers and medical electronics, as well as other high-current requirements.