HKQ04025N1S-E

Series:	HK, Q Type
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Type:	Multilayer
Material - Core:	Ceramic
Inductance:	5.1nH
Tolerance:	±0.3nH
Current Rating:	170mA
Current - Saturation:	--
Shielding:	Unshielded
DC Resistance (DCR):	680 mOhm Max
Q @ Freq:	8 @ 500MHz
Frequency - Self Resonant:	5.4GHz
Ratings:	--
Operating Temperature:	-55°C ~ 125°C
Inductance Frequency - Test:	500MHz
Features:	--
Mounting Type:	Surface Mount
Package / Case:	01005 (0402 Metric)
Supplier Device Package:	01005 (0402 Metric)
Size / Dimension:	0.016" L x 0.008" W (0.40mm x 0.20mm)
Height - Seated (Max):	0.009" (0.22mm)

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Fixed Inductors
Fixed inductors are devices that store energy in a magnetic field. This energy can be released in a controlled manner to provide power to electronic circuits or motors. A fixed inductor is essentially a coil of wire, or a “spiral of inductance”, with a metal core at the center. Typically, the core is made of a metal or ferrite material that is magnetically biased to create an inductive field between the turns of the coil. The resulting magnetic field will generate an electric current when the number of turns changes, while the shape or size of the core affects the frequency and magnitude of the current.
HKQ04025N1S-E is an E-Core Fixed inductor that combines excellent insulation properties with good magnetic properties and minimal losses. This product is designed to reduce electromagnetic interference (EMI) and switching losses in applications such as DC-DC converters, inverters, and buck converters.The HKQ04025N1S-E has a rated current of 0.4A and an inductance value of 250nH ±20%. It is wound on a ferrite core and encapsulated with UL 94V-0 rated plastic casing. It is rated for a maximum operating temperature of 125°C and a maximum storage temperature of 135°C. The maximum DC resistance (DCR) is 0.210Ω. This product is suitable for applications including DC-DC converters, buck converters, and inverters.The working principle of an inductor can be summed up as “a current through a coil produces a magnetic field around it.” The magnetic field created by the coil causes a voltage to be induced in the inductor. This voltage is proportional to the rate of change of the coil’s current, meaning that the greater the change in current, the higher the voltage will be. This enables current to be limited or changed in circuits utilizing inductors.The electrical characteristics of HKQ04025N1S-E are primarily affected by its operating temperature and DC bias. These conditions must be carefully controlled in order to achieve the desired performance. Once the operating temperature and DC bias are determined, the efficiency of the product can be assessed.The HKQ04025N1S-E is a fixed inductor that is well-suited for a wide range of applications. It combines excellent electrical and magnetic properties with a robust construction that enables it to work reliably under a variety of conditions. Thanks to its excellent EMI suppression characteristics, it is well-suited for many DC-DC and inverter applications. It also has a high temperature operating rating of 125°C and a low DC resistance of 0.210Ω, making it a particularly attractive choice for temperature-sensitive applications.

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