CDH74NP-391JC

DC Resistance (DCR):	2.09 Ohm Max
Height - Seated (Max):	0.205" (5.20mm)
Size / Dimension:	0.315" L x 0.287" W (8.00mm x 7.30mm)
Supplier Device Package:	--
Package / Case:	Nonstandard
Mounting Type:	Surface Mount
Inductance Frequency - Test:	1kHz
Operating Temperature:	-40°C ~ 100°C
Ratings:	--
Frequency - Self Resonant:	--
Q @ Freq:	--
Series:	CDH74
Shielding:	Unshielded
Current - Saturation:	--
Current Rating:	380mA
Tolerance:	±5%
Inductance:	390µH
Material - Core:	Ferrite
Type:	Wirewound
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Fixed Inductors: CDH74NP-391JC Application Field and Working Principle Fixed inductors are electrical components which store energy in the form of a magnetic field when a current is running through them. They are composed of an electrical conductor, a core, and other materials such as wire, ferrite, and air. The conductor is an insulated copper or aluminum winding and the core is usually iron or a ferromagnetic material. The core confines the magnetic field generated by the current and creates the inductance of the device. Fixed inductors are used in a wide variety of applications including, radio, RF communication, power supplies, and consumer electronics.CDH74NP-391JC is a type of fixed inductor. It is a cylindrical core with copper plated shield and an enameled copper wire bobbin. It has a rated current of 4A, an inductance of 391uH and a temperature range of -40 to +85C. CDH74NP-391 is an ideal component for switching power supplies, motor control, flyback converters and phase-shift circuits. These inductors are designed to handle high frequency/high current requirements and are commonly used in switching power supplies, DC-DC converters, motor inverters and other high frequency applications.The working principle of CDH74NP-391JC fixed inductors is based on Faraday\'s Law of Induction. This states that when a current carrying conductor is placed in a changing magnetic field, an induced voltage is generated in the conductor. In the case of an inductor, a changing current results in a opposing voltage, which is proportional to the rate of change of current. This voltage opposes the current causing a back emf. This back emf supresses the rate of change and therefore the inductor opposes the changing current. This effect is known as inductive reactance and this opposition is known as the inductance of the inductor.The inductance of the CDH74NP-391JC fixed inductor is determined by the number of turns of the winding coil, the material used for the core, and the geometrical shape of the coil. If more turns are used the inductance increases and if the core material is more permeable the inductance is also increased. The inductance is also increased by making the surface area of the coil larger.In addition to being used in switching power supplies, CDH74NP-391JC fixed inductors are also used in TV flyback transformers, phase-shift circuits, RF applications and high speed digital circuits. The inductor is designed to provide high current capability and low losses under high frequency conditions. These features make the CDH74NP-391JC fixed inductor an ideal choice for a variety of applications.

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