S0402-2N2J2B Datasheet/PDFFixed inductors are common electronic components found in almost all electrical devices. They are typically small, light, and relatively inexpensive— making them helpful components for a variety of applications. Fixed inductors are denoted by the letter “L” in a circuit and are used in both AC and DC-based systems to aid in the flow of electric current.
S042-2N2J2B is a fixed inductor commonly used in a variety of electronic circuits and projects. It is a relatively low profile inductor, making it a popular choice for circuit board applications that need to fit into small spaces. It has a diameter of 0.4 inches and a height of 0.2 inches, holding a maximum current rating of 2 Amps.
The primary purpose of a fixed inductor is usually to create, store, or control the flow of an alternating current. Simply put, the inductor affects the flow of electricity in a circuit similar to the way a capacitor affects the flow of electricity. Whereas a capacitor can store a charge, a fixed inductor can also store energy— but it is stored in the form of a magnetic field generated by the inductor windings. This stored energy is then discharged in the form of a steady current in an alternating current (AC) circuit.
Fixed inductors also can be used as chokes to filter unwanted frequencies from a circuit. This is done by “blocking” high-frequency signals and only allowing signals of a certain frequency to pass through. This is particularly useful in radio-frequency (RF) applications such as wireless audio, where a high-frequency signal needs to be filtered out in order for the audio to be heard clearly.
Fixed inductors are also commonly used as buffers to prevent signal distortion in AC circuits. Buffers help protect sensitive components from high currents or sudden voltage spikes that could damage them. They essentially create a small impedance in the circuit, which helps to divert any over-current or over-voltage away from the circuit before it gets to the sensitive components.
When choosing a fixed inductor for a particular application, size and power requirements should be taken into account. The S0402-2N2J2B is rated for a maximum current of 2 Amps – so if more current is needed a higher rated inductor should be chosen. Other considerations include the desired inductance value and frequency range. Fixed inductors can also be used in different configurations to help tailor the circuit’s response and performance.
Fixed inductors are extremely versatile components, and are used in countless applications from automotive electronics to audio systems. The S0402-2N2J2B is a suitable fixed inductor for a wide range of electronics projects, and its small size and low profile make it an ideal choice for embedded projects.