ASPI-0428S-120M-T Inductors, Coils, Chokes

Series:	ASPI-0428S
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Wirewound
Material - Core:	Ferrite
Inductance:	12µH
Tolerance:	±20%
Current Rating:	840mA
Current - Saturation:	--
Shielding:	Shielded
DC Resistance (DCR):	131.6 mOhm Max
Q @ Freq:	--
Frequency - Self Resonant:	--
Ratings:	--
Operating Temperature:	-40°C ~ 85°C
Inductance Frequency - Test:	100kHz
Mounting Type:	Surface Mount
Package / Case:	Nonstandard
Supplier Device Package:	--
Size / Dimension:	0.185" L x 0.185" W (4.70mm x 4.70mm)
Height - Seated (Max):	0.118" (3.00mm)

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Fixed InductorsFixed inductors are inductors with a fixed value of inductance. They are widely used in circuits to store energy in the form of a magnetic field, and to filter out certain frequencies in electrical circuits. The ASPI-0428S-120M-T is an example of a fixed inductor, and this article will discuss its application field and working principle.ApplicationsThe ASPI-0428S-120M-T is used in a variety of applications, from basic circuits to sophisticated systems. Often, these inductors are used in power supplies for AC/DC converters, automotive and industrial electronics, and other filter applications.At the most basic level, these inductors are used in circuits as low-pass filters, which allow only low frequency signals to pass through. They are used to prevent excessive noise or signal distortion from entering the circuit. This is done using the magnetizing field generated by the inductor to create an electromagnetic barrier, which environmental noise cannot pass through.At a higher level, these inductors are also used in DC-to-DC power converters. Here, they are used to improve power efficiency by reducing the voltage ripple, isolate load circuits from voltage surges, control overvoltages, and improve noise immunity.Working PrincipleAt its most basic level, an inductor works by forming a magnetizing field around the inductor core. When current passes through the inductor, the magnetic field will inhibit the flow of current; thus, inductors are commonly referred to as “impedance devices”.The ASPI-0428S-120M-T is a fixed inductor, which means that its inductance value is fixed and can not be changed. In order to do this, air gaps are created in the core material so that the flux generated by the current can not be increased or decreased.Theoretically, the inductance value of an inductor is calculated using the formula L = µXA, where L is inductance, µ is the magnetic permeability of the core material, X is the air gap in the core material, and A is the area of the core material. Thus, to generate a fixed inductance, the air gap must be adjusted to a specific size.ConclusionThe ASPI-0428S-120M-T is a fixed inductor used in a variety of applications, from basic circuits to sophisticated systems. It works by creating a magnetizing field around its core, which restricts current. Its fixed inductance value is obtained by adjusting the air gap in the core material.

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