4302-121F

Fixed inductors are electronic components that are used to provide a known, fixed level of inductance to the circuit. They are very common in electronics, often being used in the rectifier circuits on TVs, in buzzers in phones and for antenna home connections and short-distance radio reception. The 4302-121F is a type of fixed inductor commonly found in various applications.

By nature, inductors oppose any change to current, meaning they have a high impedance to transient changes in current. They also have a high impedance to constant DC currents. Inductors are mainly used to store energy, allowing them to act as filters and providing the linearity required for radio frequency transmission. They are also used as amplifiers, coupling transformers and more.

The 4302-121F is an axial leaded inductor with a DC current rating of 1.3A, inductance range from 8.2 to 8.8mH, a tolerance of ±20% and operating temperature range of −40°C to 85°C. In addition, the 4302-121F has a maximum de-rating current of 0.30A at temperatures of 70–85°C. It is made from soft ferrite material and the coil is wound to form a tight, compact shape.

In terms of application, the 4302-121F is used in medical systems, industrial automation, consumer products, telecom/datacom, LED lighting, test and measurements, AI/ML, military, automotive and other various fields. Common applications include voltage converters, attenuators, phase shifters, high-frequency amplifiers, matching circuits, and adaptive filters.

In terms of working principle, the 4302-121F works in a similar way as other fixed inductors. It has an inductor core which is wrapped by a coil of metal wire. When electrical current passes through the wire, a magnetic field is formed in the winding area. This field couples with the core and induces its own current, which is known as counter-electromotive force. This electromagnetic coupling between the core and the wiring is what provides the inductance of the part.

The 4302-121F is a versatile and reliable choice for many different applications and can be used in a variety of situations. It is easy to work with, requiring minimal setup and maintenance. The fixed inductor offers excellent linearity for radio frequency transmission, high impedance to DC and AC currents, and the ability to provide the same amount of inductance over a wide temperature range.