AIRD-03-121K

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Fixed Inductors

The AIRD-03-121K is a type of fixed inductor that provides electrical components with a controlled level of inductance. An inductor is a device that converts electrical energy into magnetic energy. It typically consists of a wiring coil which is wrapped around a metal core. The core typically has a ferromagnetic material which provides the inductance.

The AIRD-03-121K has a nominal inductance value of 121kμH (microhenries) and has a tolerance of ±20%. This means that the inductance of the device may vary between 96.8KμH -145.2KμH. The device has an operating temperature range of -50°C to 125°C and is made from RoHS compliant 744 material for operation up to 10MHz.

The device is a wire-wound inductor and provides various benefits such as high accuracy, stable parameters, low temperature coefficient, large current capacity, and excellent temperature characteristics. These characteristics make them suitable for a wide range of applications including switching power supplies, DC/DC converters, LCD backlighting, lighting ballasts, LED drivers, clock oscillator circuits, and power line filters.

In a switching power supply application, the AIRD-03-121K has the ability to block AC signals from being transmitted to the load and also suppress switching noise from the power supply. In addition, it can absorb high surge current such as a power fault or shortage without any abnormal behavior. The device also helps in maintaining a stable output voltage even under fluctuating loads or input voltages.

In an LED driver circuit, the AIRD-03-121K can be used to provide a low ESR (Equivalent Series Resistance), allowing current to flow more efficiently. It also provides the stable inductance needed for the LED circuit\'s inductive or capacitive filter. The inductor is also used to set the frequency of the oscillator, allowing the LED driver to provide the desired output. This helps to ensure that the LED is properly supplied with voltage and current.

In addition, the AIRD-03-121K can be used in power line filter circuits to minimize electromagnetic noise generated by high-speed switching applications. This is accomplished by shunting the high frequency noises to ground and isolating the power supply from the noise signals.

The working principle of a fixed inductor is simple. When a current passes through the coil, a magnetic field is generated which has the same direction and magnitude as that of the current. This field exists in a space between the coils containing the wire and core. The magnetic field produces a force, F, which opposes the motion of the current due to the presence of the core material. This force causes a resistance to the flow of current. The inductance is the result of this opposition.

In general, inductors are passive electronic components that provide high-quality performance in terms of temperature stability, current flow, and frequency response. They can be used in a variety of applications due to their low profile, lightweight construction, and affordability. The AIRD-03-121K is a type of fixed inductor characterized by its accurate nominal inductance value, excellent temperature characteristics and great quality performance.

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