EMI221T-RC Filters

Current:	5A
Height:	0.315" (8.00mm)
Size / Dimension:	0.354" L x 0.126" W (9.00mm x 3.20mm)
Package / Case:	Radial - 3 Leads
Mounting Type:	Through Hole
Voltage - Rated:	50V
Applications:	General Purpose
Operating Temperature:	-25°C ~ 85°C
ESD Protection:	No
Values:	R = 0.05 Ohms, C = 220pF
Series:	EMIT
Resistance - Channel (Ohms):	0.05
Attenuation Value:	25dB @ 200MHz ~ 350MHz
Center / Cutoff Frequency:	--
Number of Channels:	1
Technology:	LC (T-Type)
Filter Order:	3rd
Type:	Low Pass
Part Status:	Active
Packaging:	Tape & Box (TB)

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EMI/RFI filters are a type of electronic components used to block electromagnetic interference (EMI) or radio frequency interference (RFI) which have a dramatic impact on the performance of electronic devices. EMI/RFI filters play an important role for most application field, especially for power systems and signal systems. And one kind of EMI/ RFI filters is EMI221T-RC. This article will discuss the application fields and working principle of EMI221T-RC filter.

EMI221T-RC filter can be used for general-purpose filters, telecom filters, power supplies, and DC to AC converters. In the general-purpose filters, EMI221T-RC can be used in the industrial or commercial area where EMI and RFI signals need to be blocked. It can also be used in telecommunications applications for protection against strong external interference signals. Moreover, EMI221T-RC can be used for power supplies and DC to AC converters. It can protect the system from intense EMI or RFI that may interfere with the system.

The EMI221T-RC filter consists of two typical parts – common-mode inductor and differential-mode capacitor. The common-mode inductor is responsible for reducing the electromagnetic interference which is conducted by the power line. The differential-mode capacitor is used for blocking common-mode electromagnetic interference. Both components work together to reduce the interference in the system.

In order to reduce the electromagnetic interference, the EMI221T-RC filter should be placed as close as possible to the source of interference. This ensures that the filter will be able to effectively reduce the interference signals. In addition, it is important to ensure that the filter is of the correct size and type for the application. For example, the size of the filter should be suitable for the size of equipment it is being used for, and the type of filter used should be suitable for the type of interference expected.

The working principle of EMI221T-RC filter is based on the principle of electromagnetic shielding or EM shielding. This involves the use of a conductive material which is able to shield an area from external EM radiation. The EMI221T-RC filter uses various components – the common mode inductor and the differential mode capacitor – which form a network to create an effective shield around the system. As the EM radiation is blocked by the shield, it is not able to interact with the system.

The EMI221T-RC filter is an ideal solution for most applications that require the protection of electronic equipment and systems from EMI and RFI. It is important to ensure that the correct size and type of filter is used for the application, and that the filter is placed as close as possible to the source of interference. The EMI221T-RC filter can provide high levels of EMI/RFI protection with minimal impact on the performance of the system.

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