38S221C

DC Resistance (DCR):	2.2 mOhm Max
Height - Seated (Max):	0.220" (5.60mm)
Size / Dimension:	0.409" L x 0.409" W (10.40mm x 10.40mm)
Supplier Device Package:	--
Package / Case:	Nonstandard
Mounting Type:	Surface Mount
Inductance Frequency - Test:	100kHz
Operating Temperature:	-40°C ~ 130°C
Ratings:	--
Frequency - Self Resonant:	--
Q @ Freq:	--
Series:	3800
Shielding:	Unshielded
Current - Saturation:	35A
Current Rating:	18A
Tolerance:	±30%
Inductance:	220nH
Material - Core:	--
Type:	Wirewound
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Fixed Inductors

A fixed inductor, such as the 38S221C, is an electrical component consisting of a coil (known as the inductor) and a core. A fixed inductor is designed to offer a relatively constant level of inductance for a range of applications. By containing an inductance level that will not change significantly over time, the product is able to provide a predetermined level of stored energy that is relatively constant.Fixed inductors, such as the 38S221C, are commonly used in many modern electrical circuits, including televisions, audio amplifiers, digital circuitry, and many other electronic devices. The primary functions served by a fixed inductor are inductive reactance and voltage regulation. Inductive reactance involves the ability of an inductor to resist changes in the current it is exposed to, and voltage regulation involves the ability of the inductor to maintain a predetermined voltage level.The 38S221C is a general purpose, through-hole, wirewound fixed inductor. The product has a maximum inductance of 2.2µH and is ideal for a variety of low frequency applications, such as the application of filtering in power supply circuits. The inductor features an epoxy encapsulation for superior heat dissipation, greatly increasing its efficiency.When used in power supplies, the 38S221C works by passing a current through its winding, thereby creating an opposite polarity in the winding and inductance in the core. This inductance absorbs the currents in the circuit, which regulates the voltage across the supply.The 38S221C is also ideal for use in many AM/FM radio reception circuits, as the inductor helps to filter the waves to enable the receiver to correctly pick up the desired signal. The product also enables optimal signal detection and retention by blocking out low and high frequency signals in the oscillator circuits.Finally, the 38S221C is beneficial in audio amplifying circuits, where it functions as a very low frequency filter. The inductor helps the audio system to only pick up audio signals in the desired range, such as the frequencies of speech, to help improve the quality of audio being produced. Likewise, the product helps to filter out noise in both the input and output stages of the amplifier.In conclusion, the 38S221C fixed inductor is designed to offer a steady inductance level for a variety of electrical applications. By creating an opposite electrical polarity and inductive reactance, the product is used to help maintain a predetermined voltage level in power supplies; filter low and high frequencies in oscillators and radio reception circuits; and filter noise in audio amplifying systems.

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