RN218-0.6-02-47M

Voltage Rating - AC:	300V
Package / Case:	Vertical, 4 PC Pin
Height (Max):	0.799" (20.30mm)
Size / Dimension:	0.709" L x 0.492" W (18.00mm x 12.50mm)
Mounting Type:	Through Hole
Features:	--
Approvals:	ENEC, UR, VDE
Ratings:	--
Operating Temperature:	-40°C ~ 100°C
Series:	RN
Voltage Rating - DC:	--
DC Resistance (DCR) (Max):	1.2 Ohm (Typ)
Current Rating (Max):	600mA
Inductance @ Frequency:	47mH @ 10kHz
Number of Lines:	2
Filter Type:	Power Line
Part Status:	Active
Packaging:	Tube

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Introduction

Common mode chokes, such as the RN218-0.6-02-47M, are specialized inductive electronic components. Common mode chokes act as an electrical filter. They can reduce the amount of unintended electrical or magnetic interference, also known as noise, between two or more electrical circuits. Common mode chokes use the principle of inductance to dampen unwanted noise, allowing for improved communication between circuits.

Design

The RN218-0.6-02-47M common mode choke is composed of two identical, wound coils on a single air-core. Each of the two coils are connected in series but in opposite directions, inverting the current phase on one coil, creating a single-phase transformer. This produces an opposite magnetic field within each coil which in turn creates an opposing current; allowing the common mode choke to reduce the current or voltage of any given waveforms.

Function

Common mode chokes work to filter out any noises on the common port of two communication channels. Without a common mode choke, the two communication channels tend to attract EMI noises such as radio frequency. A common mode choke uses its inductance to create a near-circular magnetic field which blocks the EMI noises and ensures a smooth flow of communication.

Application Field

Common mode chokes can be used in a wide variety of applications. They can be found in transportation to reduce unwanted noises and emissions during operation, as well as in Li-Ion and Lithium Polymer cells for enhanced safety and performance.Common mode chokes are commonly used in areas where electrical interference is an issue, such as in the medical field. They can be utilized in medical devices such as pacemakers, x-ray machines, ultrasound systems, and MRI (magnetic resonance imaging) equipment [1]. In the aerospace and aviation industry, common mode chokes are used to help eliminate electrical interference that may compromise system performance.

Conclusion

Common mode chokes, such as the RN218-0.6-02-47M, are specialized inductive electronic components that act as an electrical filter. They are used to reduce the amount of unintended electrical or magnetic interference, or noise, between two or more electrical circuits. Common mode chokes use the principle of inductance to dampen unwanted noise, allowing for improved communication between circuits. They are commonly found in medical devices, the aerospace industry, and in Li-Ion and Lithium Polymer cells.

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