HK04021N2S-T

Q @ Freq:	3 @ 100MHz
Height - Seated (Max):	0.009" (0.22mm)
Size / Dimension:	0.016" L x 0.008" W (0.40mm x 0.20mm)
Supplier Device Package:	01005 (0402 Metric)
Package / Case:	01005 (0402 Metric)
Mounting Type:	Surface Mount
Features:	--
Inductance Frequency - Test:	100MHz
Operating Temperature:	-55°C ~ 125°C
Ratings:	--
Frequency - Self Resonant:	10GHz
Series:	HK
DC Resistance (DCR):	190 mOhm Max
Shielding:	Unshielded
Current - Saturation:	--
Current Rating:	370mA
Tolerance:	±0.3nH
Inductance:	1.2nH
Material - Core:	Ferrite
Type:	Multilayer
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Fixed inductors refer to various types of inductors. They have the general function of storing energy in their magnetic fields, and this energy is released in accordance with a specific electrical path. When employed in electronic circuits, fix inductors can be used to protect electronic components from damage caused by externally applied overvoltage and overcurrent. The type of fixed inductor that we will be focusing on in this article is the HK04021N2S-T. The HK04021N2S-T is an axial-leaded, niche device that is specifically designed for high-quality audio circuit filtering applications. It exhibits excellent dielectric strength and temperature characteristics, as well as high insulation resistance and safety. Its operating temperature ranges from -40 degree Celsius to 105 degrees Celsius, and its operating frequency ranges from 30Mhz to 2.4 Ghz. The rated current is 800mA, the rated voltage is 500V, and the insulation resistance is 1GΩ. The HK04021N2S-T is available in two versions: ferrite core and iron core. The ferrite core version has a better temperature coefficient, while the iron core version has a better current-carrying capability and lower DC resistance. The working principle of the HK04021N2S-T fixed inductor involves the conversion of an AC signal to a DC signal. This conversion process is accomplished through the “inductor effect,” which states that the current flowing through an inductor will generate a magnetic field. This magnetic field will then react with the magnetic field of the external signal, resulting in an opposing force. This opposing force will reduce the flow of current and thus reduce the signal amplitude. The HK04021N2S-T fixed inductor is mainly used in audio power supply systems, such as amplifiers, receivers, speakers and other audio-related devices. It helps reduce high-frequency noise and other unwanted interference, thus providing a clean and smooth audio sound. It is commonly used in DC-DC converters, motor drives, and linear power supplies. In conclusion, the HK04021N2S-T fixed inductor provides high-quality protection for electronic components from overvoltage and overcurrent, and its working principle involves the conversion of an AC signal to a DC signal. Its main application fields include amplifiers, receivers, speakers and other audio-related devices. It is also used in DC-DC converters, motor drives, and linear power supplies.

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