PM43-390K

DC Resistance (DCR):	587 mOhm
Height - Seated (Max):	0.138" (3.50mm)
Size / Dimension:	0.177" L x 0.157" W (4.50mm x 4.00mm)
Supplier Device Package:	--
Package / Case:	Nonstandard
Mounting Type:	Surface Mount
Inductance Frequency - Test:	2.52MHz
Operating Temperature:	-40°C ~ 100°C
Ratings:	--
Frequency - Self Resonant:	18MHz
Q @ Freq:	--
Series:	PM43
Shielding:	Unshielded
Current - Saturation:	--
Current Rating:	520mA
Tolerance:	±10%
Inductance:	39µH
Material - Core:	Ferrite
Type:	Wirewound
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Fixed Inductors: Application Field and Working Principle of PM43-390KInductors, also known as coils or reactances, are electronic components that can store energy in the form of a magnetic field when current flows through them. Fixed inductors are a type of inductor with a fixed inductance value. The PM43-390K is a type of fixed inductor with a variety of applications. This article discusses the application field and working principle of the PM43-390K, so readers can understand the different aspects of this inductor.The PM43-390K is a high-quality fixed inductor designed for a wide range of applications. It is designed with an air core, which allows it to achieve a higher inductance value with a smaller physical size than a ferrite core inductor. The PM43-390K is well-suited for applications where superior performance and reliability are required, such as TV sets, switch mode power supplies, and voltage regulation circuits.The PM43-390K is a through-hole device, meaning that it can easily be embedded in a printed circuit board (PCB) and soldered. It has a wide working temperature range, from -40°C to 125°C, which makes it an ideal choice for applications in high-temperature environments. The device is also available with high-medium current rating, with a maximum of 1.5 amps and maximum DCR of 0.21Ω.The working principle of the PM43-390K is based on Faraday’s Law of Induction, which states that the voltage across an inductor is proportional to the rate of change of the current passing through it. This means that when the current through the device is changed, the voltage across the device will also change. The PM43-390K is able to provide a stable output current, due to its high inductance value. In addition to the above, the PM43-390K also features very low ESL and ESR values, which allows it to have a high current carrying capacity, and reduces its operating temperature. The device also reduces the output voltage ripple, and aids in power saving and noise reduction. In conclusion, the PM43-390K is a high-quality fixed inductor that is well suited for a wide range of applications, such as TV sets, switch mode power supplies, and voltage regulation circuits. Its high inductance value provides it with a stable output current, and its low ESL and ESR values reduce the output voltage ripple, as well as helping with noise reduction and power saving.

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