ELF-21V020A

Voltage Rating - AC:	--
Package / Case:	Vertical, 4 PC Pin
Height (Max):	1.398" (35.50mm)
Size / Dimension:	1.142" L x 0.827" W (29.00mm x 21.00mm)
Mounting Type:	Through Hole
Features:	--
Approvals:	--
Ratings:	--
Operating Temperature:	--
Series:	V
Voltage Rating - DC:	--
DC Resistance (DCR) (Max):	147 mOhm (Typ)
Current Rating (Max):	2A
Number of Lines:	2
Filter Type:	--
Part Status:	Obsolete
Packaging:	Bulk

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Common Mode Chokes

ELF-21V020A Application Field and Working Principle

Common mode chokes are components of the energy storage inductor that are widely used in the fields of consumer electronics, power supply and communication. Among them, ELF-21V020A is one of the most popular common mode chokes with wide application.ELF-21V020A is a common mode choke composed of multiple individual wires. A single ELF-21V020A choke consists of multiple winding coils, arranged in a specific configuration on an iron core. The core is usually made of a material with high magnetic permeability, such as ferrite. The number of coils and the arrangement of the coils depend on the required performance of the choke, so each ELF-21V020A common mode choke is tailored according to the application.In operation, the ELF-21V020A common mode choke acts to suppress common mode noise that appears on the wire. When the common mode interference current passes through the inductor, the magnetic field of the inductor changes. According to Faraday’s law of induction, voltage is induced in the loop of the inductor. Under the action of this induced voltage, the common mode interference current is reduced, thereby achiving the effect of suppressing the common mode interference current.ELF-21V020A is widely used in various systems. It has excellent noise suppression performance and is suitable for industrial and consumer grade systems. For example, it can be used in power supply systems to suppress common mode interference, or in computer peripheral systems to suppress the common mode signal from the signal line. In addition, ELF-21V020A has a wide operating frequency range, from dc to 30MHz.In addition to the noise suppression characteristics, ELF-21V020A common mode choke also has the characteristics of high speed operation and low heat generation. ELF-21V020A choke can operate at high speed, while its thermal performance is also remarkable, which can ensure its stable operation in a harsh environment.In summary, ELF-21V020A is a common mode choke with a wide range of applications and excellent performance. Its excellent performance provides a reliable system design solution for various industrial and consumer system environments.

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