RLB9012-183KL

DC Resistance (DCR):	53.6 Ohm Max
Height - Seated (Max):	0.480" (12.20mm)
Size / Dimension:	0.354" Dia (9.00mm)
Supplier Device Package:	--
Package / Case:	Radial
Mounting Type:	Through Hole
Inductance Frequency - Test:	1kHz
Operating Temperature:	-55°C ~ 125°C
Ratings:	--
Frequency - Self Resonant:	230kHz
Q @ Freq:	15 @ 79kHz
Series:	RLB9012
Shielding:	Unshielded
Current - Saturation:	--
Current Rating:	120mA
Tolerance:	±10%
Inductance:	18mH
Material - Core:	Ferrite
Type:	Wirewound
Part Status:	Active
Packaging:	Bulk

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Fixed Inductors
An inductor is an electrical component used primarily for creating inductance in an electric circuit. Inductors can be divided into fixed inductors and variable inductors. Fixed inductors (or non-variable inductors) are designed to work with a specific range of frequencies, and the inductance value remains constant regardless of changes in frequency or voltage. One common example of a fixed inductor is the RLB9012-183KL. This type of inductor has a wide variety of applications, and understanding its capabilities and working principle is useful for an electrical engineer.
The RLB9012-183KL is a high-power fixed inductor consisting of an air-core and a steel case. It is rated for operation over an ambient temperature range of 10°C to 65°C with a capacitance range of between 0.7 to 2 µH. When used in power supplies, the RLB9012-183KL can be used to reduce noise and increase efficiency. It is also capable of supporting low-frequency buck converter applications with high efficiency and low losses. In addition, the inductor is capable of being used in other applications such as DC-DC converters and Class-D amplifiers to provide power regulation and increased efficiency.
Understanding how a fixed inductor works is essential for understanding the principles of electrical engineering. The basic concept of an inductor is that it creates a magnetic field in response to an alternating current. When an alternating current passes through an inductor, the current is forced through a coil, causing a magnetic field to be created around the coil. Since the current is constantly switching on and off, the magnetic field generated by the inductor has a polarity that changes over time. This changing magnetic field can then be used to store energy, filter out certain frequencies, and regulate voltage in a circuit.
One way in which the RLB9012-183KL uses its magnetic field is in voltage regulation. The self-shielding feature of the inductor protects the substrate and reduces problems caused by electromagnetic interference. By varying the amount of current flowing through the inductor, the voltage can be regulated while the inductance value remains constant. This makes it ideal for applications such as DC-DC converters and Class-D amplifiers, where voltage regulation is vital for determining the output voltage and current. Another use for the RLB9012-183KL is to filter out certain frequencies. By controlling the magnetic field of the inductor, certain frequencies can be selectively blocked and allowed to pass through, thus acting as a filter.
The RLB9012-183KL is a versatile fixed inductor that has a wide variety of potential applications. From voltage regulation and noise reduction, to power output and frequency filtering, understanding the principles behind this inductor’s workings can be extremely useful for electrical engineers. By leveraging the magnetic field of an inductor, the benefits of this fixed inductor can be applied to a variety of different applications.

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