SRN5040-8R2M Inductors, Coils, Chokes

DC Resistance (DCR):	65 mOhm Max
Height - Seated (Max):	0.157" (4.00mm)
Size / Dimension:	0.197" L x 0.197" W (5.00mm x 5.00mm)
Supplier Device Package:	--
Package / Case:	Nonstandard
Mounting Type:	Surface Mount
Inductance Frequency - Test:	100kHz
Operating Temperature:	-40°C ~ 125°C
Ratings:	--
Frequency - Self Resonant:	18MHz
Q @ Freq:	15 @ 7.96MHz
Series:	SRN5040
Shielding:	Semi-Shielded
Current - Saturation:	2.4A
Current Rating:	2.2A
Tolerance:	±20%
Inductance:	8.2µH
Material - Core:	Ferrite
Type:	Wirewound
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Fixed Inductors: SRN5040-8R2M Application Field and Working Principle

Fixed inductors, or filters, are components used in electrical circuits that regulate the current flow by introducing resistance to a circuit, instead of using a resistor. They can come in a variety of shapes and sizes and are a critical part of many devices and circuits, from power supplies to radio frequency transmission and reception. Therefore, understanding how they work and what their application fields are is essential for any engineer. This article will focus on one type of fixed inductor, the SRN5040-8R2M, to explore its application field and working principle.The SRN5040-8R2M is a surface-mountable ceramic-core fixed inductor, designed for use in high-frequency switching-mode power supplies. It features a low DC resistance and high current capability, making it suitable for switching-mode power supply circuits. It also has a wide operating temperature range and is RoHS compliant.The working principle of the SRN5040-8R2M is based on Faraday\'s law of induction. According to this law, a change in the current in the circuit will cause a proportional change in the inductance. In other words, when the current is increased, the inductance will also increase. This is achieved in the SRN5040-8R2M by the use of a ceramic core, which acts as a resistor. As the current increases, the ceramic core will resist the flow of electricity, causing the inductance to increase. The application field of the SRN5040-8R2M is the high frequency switching-mode power supply. As mentioned earlier, the low DC resistance and high current capability make it well suited for this type of power supply. The SRN5040-8R2M is also used in communication systems, where it can be used to increase the accuracy of transmission signals, as well as to reduce interference from other signals. In addition, it can also be used to improve stability and reduce noise in electronic circuits.In conclusion, the SRN5040-8R2M is a type of fixed inductor that is used in high frequency switching-mode power supplies. It works on the principle of Faraday’s law of induction, where a change in the current in the circuit will cause a proportional change in the inductance. It is well suited for this purpose due to its high current capability and its low DC resistance. It can also be used in communication systems, where it can be used to improve accuracy, reduce interference, and increase noise immunity.

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