SC105-121

DC Resistance (DCR):	400 mOhm Max
Height - Seated (Max):	0.224" (5.70mm)
Size / Dimension:	0.406" L x 0.366" W (10.30mm x 9.30mm)
Supplier Device Package:	--
Package / Case:	Nonstandard
Mounting Type:	Surface Mount
Inductance Frequency - Test:	1kHz
Operating Temperature:	-40°C ~ 125°C
Ratings:	--
Frequency - Self Resonant:	--
Q @ Freq:	--
Series:	SC105
Shielding:	Unshielded
Current - Saturation:	890mA
Current Rating:	1.2A
Tolerance:	±20%
Inductance:	120µH
Material - Core:	--
Type:	Wirewound
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction to Fixed Inductors

Fixed inductors are passive components used for storing energy in a magnetic field, usually in the form of a coil. They are electrically similar to capacitors, except that they are designed to provide a low impedance over a wide range of frequencies. Fixed inductors are used in a variety of applications, such as filters, oscillators, and rectifiers.

Types of Fixed Inductors

Fixed inductors can be classified into two main categories: air-core and ferrite core. Air-core inductors are typically made from coiled wires and are usually wound with a plastic or organic binder; they can also be implemented as discrete coils or as networks of coils. Ferrite core inductors are usually constructed with a ferrite core component, which is a material with a relatively high magnetic permeability for inductors.

SC105-121 Applications and Working Principle

The SC105-121 is a fixed air-core inductor from Toko. It has a rated inductance of 121 micro-Henries and is designed for a maximum current rating of 0.5 Amps. The inductor is wound with UL approved 102 OHM copper wire and has a low profile of only 1.0 inch height. The SC105-121 is designed to be used in applications such as DC/DC converters, switching power supplies, and inverters. It is intended to provide a low DC resistance, high-frequency inductance, and a high saturation current. The application of the SC105-121 is determined by its inductance, resistance and rated current.The working principle of the SC105-121 is based on Faraday’s Law of induction, which states that a change in the magnetic flux through a circuit induces an electromotive force (EMF). When an electric current is applied to the SC105-121, a magnetic field is generated which then induces an EMF in the same direction as the applied current. This EMF counteracts the applied electric field, creating an inductive opposition to the current, and thus stabilizing the current flow. The inductance of the SC105-121 is proportional to the number of turns in its wound copper wire.

Conclusion

Fixed inductors, including the SC105-121 are common in a variety of applications, such as DC/DC converters, switching power supplies, and inverters. According to Faraday\'s Law of induction, the SC105-121 inductor operates by generating a magnetic field that induces an EMF, which then acts as an inductive opposition to the applied current, thus supporting the current flow. With its low profile, low DC resistance, high-frequency inductance and maximum current rating of 0.5 Amps, the SC105-121 is an ideal fixed inductor for use in a variety of applications.

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