3090-271H

DC Resistance (DCR):	200 mOhm Max
Height - Seated (Max):	0.050" (1.27mm)
Size / Dimension:	0.100" L x 0.100" W (2.54mm x 2.54mm)
Supplier Device Package:	--
Package / Case:	Nonstandard
Mounting Type:	Surface Mount
Inductance Frequency - Test:	25MHz
Operating Temperature:	-55°C ~ 125°C
Ratings:	--
Frequency - Self Resonant:	250MHz
Q @ Freq:	34 @ 25MHz
Series:	3090
Shielding:	Unshielded
Current - Saturation:	--
Current Rating:	615mA
Tolerance:	±3%
Inductance:	270nH
Material - Core:	Iron Powder
Type:	--
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction Inductors are electronic components which store energy in an electromagnetic field. Fixed inductors are electrical components with a fixed inductance value. They are used in a variety of electronic circuits, ranging from simple low-power applications to highly integrated systems powering multi-gigabit transceivers. The 3090-271H is a fixed inductor produced by EPCOS, a market leader in the production of a wide range of custom-made components. This paper presents the application field and the working principle of the 3090-271H. Applications The 3090-271H is typically used for the switching power supply in DC-DC converters for mobile equipment and set top boxes, as well as for low-end servers and TV display systems. This inductor has high power rating, perfect voltage ratings and is suitable for switching frequencies in the range of 600 kHz to 1 MHz. It is also ideal for use in notebooks, smart home appliances and PDAs. Thanks to its excellent long-term stability, it is considered reliable to use over time. The 3090-271H has a total height of 10.5 mm, which is relatively small compared to other fixed inductors. It has a compact but powerful electro-mechanical design which helps it save space and weight in the application circuit. The product is offered in a variety of packages, such as SMD, leaded, TO-3 and TO-220. Working Principle The 3090-271H is a fixed inductor with an inductance range from 500 μH to 2000 μH. It is based on the ferrite core construction, which is known to be efficient in terms of magnetic saturation and energy storage. This type of construction produces a uniform magnetic field alignment along the core thanks to the shape of the ferrite core. The 3090-271H works by increasing current when an alternating current is applied. When alternating current flows through a coil of wire, it creates a magnetic field which in turn induces a voltage in the inductor. This voltage is proportional to the rate of change of the current through the inductor. The voltage then produces a current flow in the opposite direction, thus creating an opposing force. This force is responsible for creating the inductance. Conclusion The 3090-271H fixed inductor is a product which is designed for a variety of applications and offers excellent electrical characteristics. It is available in different packages and can store energy in an electromagnetic field due to its construction based on a ferrite core. Its high power rating and perfect voltage ratings make it a preferred choice for switching power supply. The 3090-271H also has a relatively small total height, which makes it suitable for use in compact applications.

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