HK212518NK-T

DC Resistance (DCR):	450 mOhm Max
Height - Seated (Max):	0.041" (1.05mm)
Size / Dimension:	0.079" L x 0.049" W (2.00mm x 1.25mm)
Supplier Device Package:	0805 (2012 Metric)
Package / Case:	0805 (2012 Metric)
Mounting Type:	Surface Mount
Inductance Frequency - Test:	100MHz
Operating Temperature:	-40°C ~ 85°C
Ratings:	--
Frequency - Self Resonant:	1.5GHz
Q @ Freq:	15 @ 100MHz
Series:	HK
Shielding:	Unshielded
Current - Saturation:	--
Current Rating:	300mA
Tolerance:	±10%
Inductance:	18nH
Material - Core:	Ferrite
Type:	Multilayer
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Fixed inductors are electronic components that possess inductance, used for storage and self-induction of electrical energy. They feature electrical characteristics such as resistance, capacitance, inductance, current limit, EMI, and impedance.HK212518NK-T is a type of fixed inductor, which is widely used in applications such as power supply filtering, switching mode power supplies (SMPS), and DC-DC converters. It is composed of a core, a coil, and an enclosure.The core of HK212518NK-T is made of ferrite material, with high saturation magnetic flux and low losses. The core itself is usually cylindrical in shape, with edge winding of copper wire, which consists of a primary and secondary winding.The inductance of HK212518NK-T is determined by the inductive reactance of the core, which itself is determined by the number of turns in the core. The number of turns will affect the ampere-turns at which the core saturates and, therefore, the current ratings of the inductor. The inductance generally ranges from 1μH to 10mH.The enclosure of HK212518NK-T has low magnetic leakage and heat dissipation. It is designed with a dust cover, a heat sink, and/or an insulating mounting material.The working principle of HK212518NK-T is based on Faraday’s Law, which states that the induced EMF (electric potential) in a closed electric circuit equals the negative of the time rate of change of the magnetic flux through the circuit.The core of the inductor acts as a magnetic circuit, and the current flowing through the coil creates a magnetic flux in the core. The changing magnetic field produces a voltage in coil, which is the opposite of the current change. This voltage opposes the change in current, therefore creating a balanced condition in the circuit and maintaining the current flow.The current passes through the circuit, the magnetic field changes, and the electrical potential in the core changes in the opposite direction, depending on the number of turns in the coil. This voltage will be either inductive or capacitive, so the induced EMF will be in phase or out of phase with the current flow. When the current is in phase with the voltage, the inductor has inductive reactance. When the current is out of phase with the voltage, the inductor has capacitive reactance.HK212518NK-T is a fixed inductor with excellent electrical characteristics, high saturation magnetic flux, and a wide operating temperature range. It is an ideal component for power supply filtering, switching mode power supplies (SMPS), and DC-DC converters. With its unique design and working principle, it can provide excellent efficiency and performance.

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