ATFC-0402HQ-3N9B-T

DC Resistance (DCR):	200 mOhm Max
Height - Seated (Max):	0.015" (0.37mm)
Size / Dimension:	0.039" L x 0.020" W (1.00mm x 0.50mm)
Supplier Device Package:	0402 (1005 Metric)
Package / Case:	0402 (1005 Metric)
Mounting Type:	Surface Mount
Inductance Frequency - Test:	500MHz
Operating Temperature:	-40°C ~ 85°C
Ratings:	--
Frequency - Self Resonant:	7GHz
Q @ Freq:	16 @ 500MHz
Series:	ATFC-0402HQ
Shielding:	Unshielded
Current - Saturation:	--
Current Rating:	500mA
Tolerance:	±0.1nH
Inductance:	3.9nH
Material - Core:	Ceramic
Type:	Thin Film
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Fixed Inductors: ATFC-0402HQ-3N9B-T Application Field and Working Principle

Fixed inductors, often referred to as chokes, are widely used in different types of electronic equipment. Fixed inductors are passive components, which consist of a coil of insulated wire wound around iron core. It offers resistance to alternating current (AC) and helps to reduce the flow in one or more frequencies. The ATFC-0402HQ-3N9B-T belong to the family of fixed inductors and are used to block direct current (DC), while allowing alternating current (AC) to pass through. This article will focus on the application field and working principle of the ATFC-0402HQ-3N9B-T fixed inductor.The ATFC-0402HQ-3N9B-T is a small, surface-mounting fixed inductor with a small size of only 0.04 inch × 0.02 inch. Its structure consists of a ceramic core with a wire wound on it with a ferrite core inside. The structure of the ATFC-0402HQ-3N9B-T is designed to provide excellent electrical performance, with a high resistance to AC current and an improved DC blocking capacity. This allows the fixed inductor to be used in a variety of circuits including switching converters, audio filters, and RF filters. It also offers very good tolerance to temperature variations, making it suitable for use in a variety of operating conditions.The working principle of the ATFC-0402HQ-3N9B-T fixed inductor is based on the concept of Faraday’s Law of Induction, which states that an electric current flowing through a coil generates a magnetic field. The induced magnetic field then creates a voltage across the coil, which counteracts any changes in the electric current. This is known as inductance. An AC signal will cause the current to vary, leading to a voltage across the coil which will oppose the current. The degree to which the current is opposed depends on the inductance of the fixed inductor. In the case of the ATFC-0402HQ-3N9B-T, the inductance is 0.43 microhenries making it suitable for a variety of AC applications. The ATFC-0402HQ-3N9B-T fixed inductor is also capable of blocking DC current, meaning that it can be used to filter out any low-frequency signals. This is because the current in a DC signal does not vary, meaning that the induced magnetic field will not create a voltage which opposes the current. As such, the ATFC-0402HQ-3N9B-T can be used to filter out low-frequency signals or provide power supply noise filtering.In addition, the ATFC-0402HQ-3N9B-T fixed inductor can also be used for high-frequency signal attenuation. This is because the current in a high-frequency signal can vary with greater fluctuations, leading to a larger induced voltage across the coil. The larger induced voltage then opposed the current, resulting in a greater attenuation of the signal. The ATFC-0402HQ-3N9B-T is suitable for use in a variety of applications and can be used in conjunction with other components such as resistors and capacitors. They are designed to be flexible and can be used in both AC and DC circuits. Furthermore, they are relatively inexpensive and are available in a variety of package types, making them an ideal choice for many applications.In conclusion, the ATFC-0402HQ-3N9B-T fixed inductor is a small, surface-mounting device that offers excellent electrical performance and can be used for both AC and DC applications. It is designed to provide improved DC blocking capacity and high resistance to AC currents, allowing for the filtering out of low-frequency signals and high-frequency signal attenuation. Due to its reasonable cost and wide availability, the ATFC-0402HQ-3N9B-T can be used in a variety of applications in both AC and DC circuits.

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