SRN5040-270M

DC Resistance (DCR):	198 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:	9MHz
Q @ Freq:	17 @ 2.52MHz
Series:	SRN5040
Shielding:	Semi-Shielded
Current - Saturation:	1.4A
Current Rating:	1.3A
Tolerance:	±20%
Inductance:	27µH
Material - Core:	Ferrite
Type:	Wirewound
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Fixed Inductors: SRN5040-270M Application Field and Working Principle

Fixed inductors are electronic components used to store energy in the form of a magnetic field and are used in a variety of electrical systems, ranging from switching power supplies and filters to clocks and timers. The SRN5040-270M is a fixed inductor, optimized for high current applications and is part of a larger family of surface-mount products from Johanson Technology. In this article, we\'ll learn about the SRN5040-270M and its application in the field, as well as its working principle.

SRN5040-270M Key Features

The SRN5040-270M is a high current fixed inductor offering very low DC resistance and high tolerance to AC current. It is a surface-mount device measuring 2.7 x 2.7 mm and is based on an advanced radial leaded inductor technology. The SRN5040-270M has a wide inductance range from 1 to 470µH and can handle up to 7.0A of steady-state current with a low DC resistance of 0.35mΩ. It offers an excellent temperature stability, with the inductance tolerance within ±20% from -40 to +125°C.

SRN5040-270M Application Field

The SRN5040-270M is designed for power electronics applications that use higher currents, such as DC-DC converters, high-current LDOs, and active rectifiers. It is particularly suitable for switch-mode power supplies, high-current filters, and switching power conversion applications. Additionally, it is often used in smartphones and tablets, motor control circuits, LED lights, and Class-D power amplifiers as it offers flat frequency response up to 11MHz.

SRN5040-270M Working Principle

Fixed inductors work on the principle of electromagnetic induction, which states that an electric field is generated in a closed loop by changing a magnetic field. An inductor is a type of device that stores energy in the form of a magnetic field, and the SRN5040-270M produces this magnetic field using a core made of ferromagnetic material such as steel or a specialized alloy.When a current is passed through the SRN5040-270M, the current creates a magnetic field which extends outward from the core and induces an electric field in the windings of the inductor. An inductor\'s purpose is to oppose the changes in the current that produces them, so when a voltage is applied to the coil, a current slowly builds up in the inductor, and the inductor resists any sudden changes to the current. As a result, the SRN5040-270M acts as a filter that removes AC voltage and current from the circuit, while allowing only DC voltage and current.

Conclusion

The SRN5040-270M is a fixed inductor from Johanson Technology\'s line of surface-mount inductors. It is specifically designed for high current applications and is capable of handling up to 7.0A of steady-state current at a low DC resistance. It is suitable for a variety of power electronics applications, such as active rectifiers, high-current LDOs, and switch-mode power supplies. The device works on the principle of electromagnetic induction, as it generates a magnetic field when a current is passed through its core, and this field induces an electric field in the windings of the inductor.

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