SRR0745A-181M

Fixed inductors are electronic components used to store electrical energy in the form of a magnetic field. They are commonly found in power supplies, loudspeakers and other electrical devices. The SRR0745A-181M is an example of a fixed inductor that has a variety of applications.

Design and characteristics

The SRR0745A-181M holds a low profile shape with a small size of 7.5 × 4.6 mm. It is constructed with ferrite beads and features an inductance of 18uH. This inductor works with a rated electrical current of 0.69A and is rated up to a maximum frequency of 500 kHz. It has a saturation current of 1.15A and a Q-factor of 20. The inductor is also rated to operate at a temperature range of -40°C to +85°C and comes with a maximum voltage rating of 80V. It is manufactured with RoHS compliant materials.

Applications

The SRR0745A-181M inductor has numerous applications in industrial, consumer and automotive electronics. Primarily, it is used for power supply smoothing in DC-DC converters, motor drivers, switching power supplies, and other circuits that require a constant current and frequency. It is also used in switch mode power supplies and frequency control circuits. Additionally, it is employed in loudspeakers and other sound systems to assure low distortion in the audio range. Furthermore, it is used in RFID tags, producing an EMI filter in LCD TVs and cellular phones.

Working Principle

The working principle of the SRR0745A-181M is based on the Faraday principle of electromagnetic induction. When current is applied to the inductor, a magnetic field is generated around the coil. This field then produces a force on any moving charges resulting in a counter current called an Electromotive Force (EMF). As the field generated by the coil builds, the current drops and the voltage increases. The law of induction states that the voltage will be equal to the rate of change of the magnetic field. The larger the inductance of the coil, the higher the EMF.

The SRR0745A-181M inductor uses a ferrite core to enclose the coil. This ferrite substrate provides a strong magnetic field while also increasing the inductor\'s current carrying capacity. Due to the inductor\'s rated voltage and current, it is a very efficient device for applications requiring high power levels. By combining the ferrite core and the coil, the SRR0745A-181M provides a low value of relative magnetic permeability which increases power supply regulation accuracy, reduces switching losses, and offers higher current ratings.

Conclusion

The SRR0745A-181M fixed inductor is used in a range of applications, primarily related to power supplies. With its low profile size and ferrite core, it is highly efficient in producing a constant current and voltage. Additionally, its maximum frequency rating of 500 kHz and wide temperature rating make it suitable for a variety of circuits and systems. Thus, it is an ideal choice for industrial, consumer and automotive electronics.