103-123F

DC Resistance (DCR):	3.8 Ohm 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:	2.5MHz
Operating Temperature:	-55°C ~ 125°C
Ratings:	--
Frequency - Self Resonant:	35MHz
Q @ Freq:	25 @ 2.5MHz
Series:	103
Shielding:	Unshielded
Current - Saturation:	--
Current Rating:	160mA
Tolerance:	±1%
Inductance:	12µH
Material - Core:	Ferrite
Type:	--
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Fixed InductorsFixed inductors are electrical components used in a variety of circuits in both digital and analog forms. They are most commonly found in power supplies, filters, oscillators, and clocks. They are designed to provide a fixed amount of inductance (measured in Henries) to the circuit.Inductors are composed of a coil of wire with a core of iron or ferrite material and are known as “air-cored” inductors when they lack the iron or ferrite material. These types of fixed inductors can also be found in RF (radio frequency) circuits where an inductor is required to produce a reactive electromagnetic field.103-123F Fixed InductorsThe 103-123F family of fixed inductors from Chemi-Con is a series of miniature, air-core inductors designed for use in DC-to-DC switching-regulated power supplies. The 103-123F inductors provide the power regulation functions for unipolar and bipolar switching converters.These inductors are designed with an inductance of 10uH to 400uH and a current rating to as high as 7.5 Amps. The inductors are based on a spiral wire core winding technology. They measure in at just 5.5 x 4.3mm, making them ideal for space-limited applications.The 103-123F series also offers high temperature and thermal shock capabilities. The devices can operate in temperatures up to 155°C and also withstand conditions of -55°C to +155°C with a maximum handling temperature of 230°C.Application FieldThe 103-123F family of inductors is commonly used in power supplies, DC-to-DC converters, switching regulators, and voltage controllers. These devices are well suited for use in a wide variety of applications because of their compact size, high current capabilities, and high temperature rating.The 103-123F series of inductors can also be used in high-frequency circuits and wireless applications. They are often used in LTE and Wi-Fi systems, as well as Bluetooth, GPS, and automotive applications.Working PrincipleFixed inductors rely on the principles of magnetic flux and Faraday’s Law of Induction. Magnetic flux is the rate at which magnetic flux lines pass through a given area, and Faraday’s Law states that inducing an electromotive force (EMF) in a circuit by changing the magnetic flux will cause a current to be induced in the circuit. The 103-123F inductor relies on the combination of these two principles to provide the desired inductance to the power supply circuit.The inductor works by using its spiral wire core winding to create an induction current. The core is made of a ferrite material which aids in producing the induction current. As current flows through the coil, it creates a changing magnetic field which in turn induces a voltage in the coil, thus creating an induced current to the power supply circuit.ConclusionThe 103-123F series of fixed inductors is a versatile and reliable component for use in a variety of circuits. With its small footprint and high current capability, it is an ideal solution for use in power supplies and other DC-to-DC converters. The unique design of the inductor makes use of magnetic flux and Faraday’s Law of Induction to provide the desired inductance to the power supply circuit. This makes the 103-123F family of inductors an essential component of many modern electrical systems.

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