CDRR94ANP-181MC

DC Resistance (DCR):	784.8 mOhm Max
Height - Seated (Max):	0.197" (5.00mm)
Size / Dimension:	0.508" L x 0.370" W (12.90mm x 9.40mm)
Supplier Device Package:	--
Package / Case:	Nonstandard
Mounting Type:	Surface Mount
Inductance Frequency - Test:	100kHz
Operating Temperature:	-40°C ~ 100°C
Ratings:	--
Frequency - Self Resonant:	--
Q @ Freq:	--
Series:	CDRR94A
Shielding:	Shielded
Current - Saturation:	600mA
Current Rating:	540mA
Tolerance:	±20%
Inductance:	180µH
Material - Core:	Ferrite
Type:	--
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The CDRR94ANP-181MC is a fixed inductor, a passive electronic component that stores electrical energy and releases it when a certain amount of current passes through it. The inductor consists of a coiled wire, typically made of copper, which is insulated to prevent short-circuiting. The coil is wound around a non-conductive core that is made of either ferrite or powdered iron. The inductance of the inductor is generated due to the eddy current produced by the wire coil passing through the magnetic field of the core material.

Application Fields

The CDRR94ANP-181MC is commonly used to filter out high frequency noise in electronic circuits, to provide choke inductance in switched-mode power supplies, and as a signal delay element. In power supplies, it provides the high-frequency noise reduction in the important regulator step. It can also be used in low power, high-frequency switched-mode power supplies and as a series input filter. In signal delay elements, the CDRR94ANP-181MC is particularly effective in inductors used in RF signal transmission and is used for matching the impedance of a circuit to a transceiver.

Working Principle

The CDRR94ANP-181MC works by utilizing the principle of inductance. When a varying current passes through the inductor’s coiled wire, a varying magnetic field is generated. This magnetic field interacts with the core material and induces eddy currents in the core material. This current and the accompanying magnetic force generate a self-inductance, which inevitably opposes the changing current, producing a back electromotive force.This effect is due to Faraday’s Law, which states that the voltage induced in a circuit is proportional to the rate of change of the circuit’s magnetic field. This produces an opposition to the change in the current which must work against the voltage source before it can reach the load.The current is thus delayed before it reaches the load, giving the inductor a current-limiting effect. This allows a load to be connected without fear of it drawing too much current or shorting on start-up.

Conclusion

The CDRR94ANP-181MC fixed inductor is a versatile and useful part in various electrical and electronic systems. Its use to filter out unwanted noise, as a choke inductance in switched-mode power supplies, and as a signal delay element saves time, money, and effort. The fixed inductor provides high-frequency noise reduction, current-limiting, and impedance-matching effects, which all lead to more efficient performance for whatever system it is used in. By understanding the working principle of the fixed inductor, users can better select the correct part for their application.

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