EXC-34CE121U Filters

Voltage Rating - DC:	5V
Package / Case:	0805 (2012 Metric), 4 PC Pad
Height (Max):	0.024" (0.60mm)
Size / Dimension:	0.079" L x 0.049" W (2.00mm x 1.25mm)
Mounting Type:	Surface Mount
Features:	--
Approvals:	--
Ratings:	--
Operating Temperature:	-40°C ~ 85°C
Voltage Rating - AC:	--
Series:	EXC34
DC Resistance (DCR) (Max):	1 Ohm
Current Rating (Max):	200mA
Impedance @ Frequency:	120 Ohms @ 100MHz
Number of Lines:	2
Filter Type:	Signal Line
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Common Mode ChokesEXC-34CE121U, a Common Mode Chokes, is used to filter out radiated noise from a high frequency signal. It consists of two coils, each wound with an identical number of turns but with an opposite direction of wrap, and the coils are typically connected with a ferrite core. The application field of EXC-34CE121U refers to the automotive, medical, industrial and consumer electronics. For example, in the automotive industry, EXC-34CE121U is used as the radio interference filter, preventing radio noise from affecting the electrical system. In the industrial area, EXC-34CE121U can reduce the open-loop gains and noise currents generated by the motor drivers. And in the consumer electronics sector, EXC-34CE121U is used to filter out any radiated noise coming from external sources such as other digital components or signal sources so that it does not interfere with the performance of a device.The working principle of EXC-34CE121U is based on the principle of mutual inductance. The magnetic field of one of the coils (on the input side) couples with the other coil (on the output side). Then any noise signal picked up by the input coil is opposed by the output coil and effectively reduces the noise level of the output side. This mechanism cannot completely block out the noise, but it can reduce the amount of it significantly.EXC-34CE121U also has some of other advantages, such as high temperature resistance, good common-mode rejection, wide frequency range and small size.High temperature resistance means that EXC-34CE121U can operate in harsh environments without any trouble and damage caused due to the high temperatures. Good common-mode rejection means that the common-mode noise is significantly attenuated by the EXC-34CE121U, in turn reducing the effect of any external EMI sources. The wide frequency range of EXC-34CE121U allows it to handle signals from a wide range of frequencies. Last but not least, the small size of EXC-34CE121U means that it can fit into a wide variety of spaces, making it one of the ideal components for miniaturization.Overall, EXC-34CE121U is an ideal Common Mode Choke for filtering out radiated noise from a high frequency signal. Its high temperature resistance, good common-mode rejection, wide frequency range, and small size make it an ideal solution for many different types of applications, such as automotive, medical, industrial and consumer electronics.

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