0805-18NJ

Series:	805
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Type:	Wirewound
Material - Core:	Ceramic
Inductance:	18nH
Tolerance:	±5%
Current Rating:	600mA
Current - Saturation:	--
Shielding:	Unshielded
DC Resistance (DCR):	200 mOhm Max
Q @ Freq:	50 @ 500MHz
Frequency - Self Resonant:	3.3GHz
Ratings:	--
Operating Temperature:	-40°C ~ 125°C
Inductance Frequency - Test:	250MHz
Mounting Type:	Surface Mount
Package / Case:	Nonstandard
Supplier Device Package:	--
Size / Dimension:	0.090" L x 0.068" W (2.29mm x 1.73mm)
Height - Seated (Max):	0.060" (1.52mm)

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Fixed inductors, or chokes, are electrical components utilized for regulating or maintaining current in electronic circuits. Specifically, the 0805-18NJ inductor, which is encased in an aesthetically-pleasing chip bearing the dimensions 0805 and height of 18, is designed to respond to AC current as well as maintain and filter the output of voltage.
In terms of internal configurations, the 0805-18NJ utilizes an air core fixed inductor, which is composed of windings of copper enameled wires on a thermoplastic or thermosetting bobbin, machined with special care to optimize mobile parameters, and hardened resin in order to stabilize the kinetic propulsors. This optimized interior structure enables the 0805-18NJ to achieve precise values of inductance for managing current flow.
From a functioning standpoint, the 0805-18NJ inductor works using the principle of mutual induction by altering the field of energy-charge propagation within the component. When an AC signal is passed through the inductor core, it causes a change in the magnetic field intensity, which generates an opposing EMF that prevents an overabundance of current from running through the circuitry. This EMF is part of the choke’s “back EMF” effect.
In terms of impedance, the 0805-18NJ inductor has a higher impedance than a capacitor, which helps to filter and modulate amplified frequencies and help reduce or eliminate humming and distortion. Additionally, the inductor’s high ESR factor (equivalent series resistance) prevents it from overcharging, stopping the current from burning or damaging components by accumulating more and more energy without releasing.
Overall, the 0805-18NJ Inductor is a versatile and reliable fixed component for use in medium and high wattage circuits, specifically designed for both AC and DC currents and without the need for cooling. In terms of application field, this component is typically used in applications such as audio and video amplifiers, H-bridge converters, linear voltage regulator circuits, motor drives, multiplier circuits, onboard switching power supply designs, and many more.

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