4554-391K

DC Resistance (DCR):	1 Ohm Max
Height - Seated (Max):	0.433" (11.00mm)
Size / Dimension:	0.340" Dia (8.64mm)
Supplier Device Package:	--
Package / Case:	Radial
Mounting Type:	Through Hole
Inductance Frequency - Test:	796kHz
Operating Temperature:	-40°C ~ 85°C
Ratings:	--
Frequency - Self Resonant:	2.1MHz
Q @ Freq:	20 @ 796kHz
Series:	4554
Shielding:	Unshielded
Current - Saturation:	--
Current Rating:	480mA
Tolerance:	±10%
Inductance:	390µH
Material - Core:	Ferrite
Type:	--
Part Status:	Active
Packaging:	Bulk

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IntroductionFixed inductors, also known as fixed coil inductors, are electronic components that frequently appear in various electrical and electronic devices. The 4554-391K is a popular type of fixed inductor, which has great applications in the fields of both complex and simple electronic circuits. This article will take a close look at the application fields and working principles of 4554-391K.What Is 4554-391K?4554-391K is rated at a nominal value of 390uh inductance, with a working frequency range of 15-200MHZ and a rated current of 1amp. At the same time, it supports operating temperatures of up to 125 degrees Celsius and its size is about 8mm × 12mm, which is very suitable for use in PCBs and other limited space environments. Application Fields and Working Principle of 4554-391K4554-391K\'s application fields mainly include: DC/DC converters, power management ICs, electronic integrated circuits, embedded processors, medical/telecommunication equipment, etc. In these application systems, 4554-391K works as a filter and energy storage device to reduce or filter noise interference, and the protection and control of switching signals from power components.The working principle of 4554-391K is to convert alternating current into direct current or rectify it, so as to make a voltage reduction or a voltage step-down. First, the alternating current through the coil will form a gradually changing magnetic field (due to the Faraday law of electromagnetic induction). Then, this changing magnetic field will drive the coil to generate a voltage, thus achieving the purpose of voltage conversion.Additionally, 4554-391K also has a self-resonant frequency that helps reduce the adverse effects of high-frequency noise on the circuit. This self-resonant frequency is related to the inductance of the coil, which normally ranges from 5 to 8 MHZ.ConclusionIn conclusion, 4554-391K is an important fixed inductor that has applications in a wide variety of electronic systems, ranging from complex DC/DC converters to medical/telecommunication equipment. Its working principle is based on the concept of magnetic induction, which is explained in detail above.

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