ER1840-01KM

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Fixed inductors are electronic components that store energy in the form of a magnetic field when electric current passes through it. The ER1840-01KM is a resistor-type ferrite-core fixed inductor, and is used predominantly in consumer and commercial applications such as:

• Power supply filters
• DC-DC converters
• Switch-mode power supplies (SMPS)
• Electronic oscillators

The ER1840-01KM is also suitable for other applications where its size, low cost, and high efficiency make it particularly suitable. Specifically, the size of the ER1840-01KM is only 18mm (0.7") diameter and 4mm (0.16") high, and it is often used in power supply and high frequency switching applications.

The principle of operation behind the ER1840-01KM is based on Faraday\'s Law of Induction, where an electric current is induced in a closed circuit of wire when a varying magnetic field is applied. When a direct-current (DC) passes through the ER1840-01KM, a magnetic field is formed around it, a process called flux linking. This flux is then opposed by the induced voltage, forming a self-regulating feedback loop which keeps the current at whatever value is necessary for the flux field to remain constant.

In addition, the ER1840-01KM has a resistance (R) that affects the performance of the inductor. R is determined by the diameter, length, and number of turns of the wire, and it is this resistance that determines the efficiency of the inductor, as well as its current-carrying capacity. Therefore, when selecting an ER1840-01KM for a particular application, it is important to know the requirements for the desired inductance and R.

The ER1840-01KM is capable of being used in a variety of environments, including high-temperature and humid conditions. It also has excellent electromagnetic compatibility (EMC) characteristics, meaning that it can be used in a wide range of EMC applications. It is available in a range of standard values, from 1µH to 10mH, in addition to custom designs.

Overall, the ER1840-01KM is a high-performance, low-cost ferrite-core fixed inductor that can be used in a variety of applications. Its primary uses are in power supplies, DC-DC converters, and switch-mode power supplies, but it is also suitable for many other applications including electronic oscillators, high frequency switching, and EMC applications.

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