ELF-21V010A

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):	515 mOhm (Typ)
Current Rating (Max):	1A
Number of Lines:	2
Filter Type:	--
Part Status:	Obsolete
Packaging:	Bulk

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Common Mode ChokesCommon mode chokes are a type of electrical component used to filter out electromagnetic interference (EMI) from high speed electronic systems. The ELF-21V010A is an example of one of these devices. This application note will discuss the field of application and working principles of this device.The ELF-21V010A is a common mode choke designed for a variety of power conversion applications. Because it is a high current device, it is suitable for high power systems such as motor drives, power supplies, UPS systems, and inverters. It is also commonly used in applications such as data converters, telecommunications equipment, servers, power over Ethernet, and more.The ELF-21V010A has a high inductance of 645mH in the inductor, perfect for suppressing line-to-line noise at the common and differential modes. This device is designed to provide a high level of EMI protection for sensitive electronic systems, which can be vulnerable to interference from external devices such as power sources or other electronics. By reducing the amount of interference, performance and reliability of the system is improved.The ELF-21V010A works on the principle of electromagnetic induction. It uses the magnetic fields produced by passing current through an inductor to block or reduce the effects of external interference. When current passes through an inductor, it produces a magnetic field that opposes the flow of current. This means that any outside interference is weakened and fewer errors are produced in the system. The choke also allows for easy and compact installation, since the components are relatively small.In addition, the ELF-21V010A provides a low DCR (direct current resistance) that is suitable for high current applications. This helps to ensure that there is minimal loss of power in the system, as well as minimize EMI. The device also has an extended operating temperature range of -40°C to 105°C, making it suitable for a variety of environmental conditions.Overall, the ELF-21V010A is a high performance common mode choke designed for a variety of power conversion applications. It is designed to provide a high level of EMI protection for sensitive electronic systems, as well as minimize DCR and operate within a wide range of temperatures. The device also has an induction feature that helps to reduce the effects of outside interference, making it an excellent choice for applications where high levels of performance are needed.

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