103-180J

DC Resistance (DCR):	93 mOhm Max
Height - Seated (Max):	0.075" (1.91mm)
Size / Dimension:	0.100" L x 0.100" W (2.54mm x 2.54mm)
Supplier Device Package:	--
Package / Case:	Nonstandard, 2 Lead
Mounting Type:	Surface Mount
Inductance Frequency - Test:	50MHz
Operating Temperature:	-55°C ~ 125°C
Ratings:	--
Frequency - Self Resonant:	2GHz
Q @ Freq:	52 @ 50MHz
Series:	103
Shielding:	Unshielded
Current - Saturation:	--
Current Rating:	1.03A
Tolerance:	±5%
Inductance:	18nH
Material - Core:	Phenolic
Type:	--
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Fixed Inductors

A fixed inductor (or choke) is a type of electrical component used to induce magnetic fields on a current-carrying conductor in order to inhibit or enhance the current flow. Fixed inductors are most commonly used in the restriction of energy in electronic circuits. They may be composed of a core or discrete winding of coils to increase the strength of the magnetic field. This article focuses on the 103-180J application field and working principle of fixed inductors.

103-180J Application Field

Fixed inductors are typically used in power supply circuits, including those found in various electronics such audio amplifiers, television broadcast transmitters, and personal computers. The 103-180J variety is the most commonly used in medium-power systems, such as those found in automated manufacturing equipment, lighting systems, consumer electronics, and medical equipment. In these instances, the inductors are used to produce a constant, low-voltage current.

Working Principle

A fixed inductor consists of a coil of insulated copper wire wound around a core, which is typically either ferrite or powdered-iron. This coil creates a magnetic field, which limits the current flow due to the resistance of the inductor. The amount of current that is restricted is determined by the inductance of the inductor, which is measured in Henrys and expressed as “L.”In an ideal inductive reactance circuit, the voltage across the inductor is in-phase with the current passing through it. This is due to the action of the magnetic field, which is created by the coil. As the current in the coil increases, the magnetic field also increases, thereby increasing the voltage across the inductor. The voltage can reach a maximum level depending on the magnetization of the core and the number of turns on the coil.As with resistors, inductors are also classified according to the frequency of current that they can handle. Low-frequency inductors are typically composed of small coils, while high-frequency inductors require larger coils in order to properly store and dissipate energy.

Conclusion

Fixed inductors are essential components in electronic circuits, capable of controlling and limiting the amount of current that passes through them. The 103-180J inductor is the most common variety, and is used in medium-power applications. Its working principle is based on the wiring of a coil around a core, which creates a magnetic field capable of limiting the current flow through the inductor.

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