1812R-183F

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Fixed inductors are a type of electronic component that store energy in the form of magnetic flux. Unlike variable inductors, which can be adjusted to change the amount of stored energy, fixed inductors are designed to maintain a predetermined inductance value. The most commonly used type of fixed inductor is the 1812R-183F.

The 1812R-183F is a radial leaded, non-polarized surface mount inductor with a high inductance range of 18uH to 12mH. The inductor is designed to reduce the undesirable effects of high-frequency transients on electronic circuits, allowing them to maintain their performance even in the presence of these transients. Additionally, the fixed inductor is equipped with toroidal ferrite cores, making it suitable for dc bias applications.

The 1812R-183F is designed to operate with a wide range of AC and DC current ratings from 0.2 to 5.2 amperes. The maximum dc operating temperature for this inductor is +105°C with wattage ratings starting from 0.5 to 2.3 watts. It also features a maximum inductance value of 18mH at 100kHz with a current rating of 0.020 amperes.

The operating principle of the 1812R-183F is based on Faraday’s law of induction, which states that a changing magnetic field produces an electric field. In the case of the 1812R-183F, the magnetic field is generated by a DC current flowing through the inductor. This changing field then produces an EMF, or voltage, across the inductor.

This EMF has a characteristic shape depending on the magnitude and frequency of the current flowing through the inductor. At low frequencies, the EMF is generally proportional to the time rate of change of current or the curvature of the current waveform. At higher frequencies, the EMF waveform is damped and levels out as the inductor’s operating frequency approaches its self-resonant frequency.

The 1812R-183F is widely used in many applications, such as power supplies, switching regulators, audio and radio circuits, and EMI/RFI suppression. Due to its compact size and high inductance range, the fixed inductor is also an ideal choice for portable electronic devices. It is also used in a variety of automotive applications, including engine control systems and fuel systems. Additionally, the 1812R-183F is used for high-frequency noise suppression in computer systems.

The 1812R-183F is a versatile and reliable fixed inductor that is suitable for a variety of applications. Its radial leaded, non-polarized design makes it ideal for use in surface mount applications, while its toroidal ferrite cores enable it to be used in dc bias applications. Its operating principle is based on Faraday’s law of induction, and it is designed to reduce the undesirable effects of high-frequency transients on electronic circuits. Lastly, its wide range of AC and DC current ratings, maximum inductance value, and maximum operating temperature make it suitable for a variety of applications including power supplies, switching regulators, audio and radio circuits, and EMI/RFI suppression.

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