CDR7D28MNNP-470NC Inductors, Coils, Chokes

Series:	CDR7D28MN
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	--
Material - Core:	Ferrite
Inductance:	47µH
Tolerance:	±25%
Current Rating:	1A
Current - Saturation:	1.05A
Shielding:	Shielded
DC Resistance (DCR):	275 mOhm Max
Q @ Freq:	--
Frequency - Self Resonant:	--
Ratings:	--
Operating Temperature:	-40°C ~ 105°C
Inductance Frequency - Test:	100kHz
Mounting Type:	Surface Mount
Package / Case:	Nonstandard
Supplier Device Package:	--
Size / Dimension:	0.287" L x 0.287" W (7.30mm x 7.30mm)
Height - Seated (Max):	0.118" (3.00mm)

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Fixed Inductors

Inductors are components used to store energy in magnetic fields. The CDR7D28MNNP-470NC is a fixed inductor, meaning the inductance is unchangeable and it features a high temperature range, low inductance and wide operating range.

Application Field

The CDR7D28MNNP-470NC fixed inductor can be used in a variety of applications. One of the most common uses is in DC-DC converters in which it can assist with controlling output voltages. In automotive applications, the inductor is also used for noise reduction and fast switching energy storage. It can also be used as a power management component in digital systems, wireless charging circuits and in medical devices.

Working Principle

An inductor is a component that stores energy in a magnetic field. When a direct current (DC) flows through the inductor, a magnetic field builds up in the wire and its optional magnetic core. The magnetic field usually consists of two poles (LN), a south pole and a north pole.As the current flows through the inductor, it generates a voltage known as the back EMF which is equal to the rate of change of the magnetic flux. This voltage opposes the change in the current and results in a voltage drop across the inductor that is proportional to the inductance and rate of change of current. The larger the inductance or the larger the rate of variation in the current, the larger the voltage drop across the component.The higher the operating frequency of the inductor, the more important the inductance is. While the main purpose of the inductor is to store energy and stabilize the voltage, it also affects the power losses in the circuit as it dissipates energy due to resistance in the wire and Core Losses due to the magnetic field.

Conclusion

The CDR7D28MNNP-470NC is a fixed inductor used in a wide range of applications. Its working principle is based on the principle of storing energy in a magnetic field, with resistance in the wire and core losses, affecting the power losses in the circuit. With its low inductance and high temperature range, it is a reliable component that is used in a variety of applications in automotive, digital devices, wireless charging and medical systems.

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