1025-18F

DC Resistance (DCR):	850 mOhm Max
Height - Seated (Max):	--
Size / Dimension:	0.095" Dia x 0.250" L (2.41mm x 6.35mm)
Supplier Device Package:	Axial
Package / Case:	Axial
Mounting Type:	Through Hole
Inductance Frequency - Test:	25MHz
Operating Temperature:	-55°C ~ 125°C
Ratings:	--
Frequency - Self Resonant:	250MHz
Q @ Freq:	28 @ 25MHz
Series:	1025
Shielding:	Unshielded
Current - Saturation:	--
Current Rating:	420mA
Tolerance:	±1%
Inductance:	820nH
Material - Core:	Phenolic
Type:	Molded
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Fixed Inductors

Fixed inductors play an important role in many applications. The 1025-18F is a typical example of a fixed inductors. This article will discuss the 1025-18F application field and its working principle.

Field of Application

The 1025-18F is a surface mount inductor applied in a wide range of applications, such as switching power supplies, high frequency DC-DC converters, voltage regulator modules, and LED driver circuits. It is used for impedance matching in RF and microwave circuits, and noise filtration and signal conditioning in electronic circuits.

Principle of Operation

The basic principle of an inductor is electromagnetism. A coil of wire creates a magnetic flux when a current is passed through it. This magnetic flux induces a voltage in the coil. This voltage is then used to produce a desired effect, such as impedance matching, or filtering out high frequency signals. The 1025-18F inductor is made of ferrite core and a copper coil. It follows the basic principle of an inductor as when a current is passed through it, the ferrite core material and the copper wire form a magnetic field. This magnetic field induces a voltage in the copper wire coil. This induction voltage then provides the desired effect, like impedance matching. The 1025-18F has a ferrite core with a high wattage, which allows it to handle more power and greater current. It also has a high quality magnetic path which can reduce the signal loss. Due to it’s small size and nature, it can be easily installed in places where other inductors can’t reach.

Conclusion

The 1025-18F is a surface mount inductor specialized for high frequency applications. It is suitable for a wide range of applications such as switching power supplies, LED driver circuits, and high frequency DC-DC converters. It follows the basic principle of an inductor, where a magnetic field is produced by a coil of wire and a ferrite core, and this magnetic field induces a voltage in the coil. The 1025-18F has the advantage of a high wattage ferrite core and a high quality magnetic path, which allows for greater power and less signal loss.

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