EXC-X4CE900U

Voltage Rating - AC:	--
Package / Case:	0202 (0505 Metric)
Height (Max):	0.014" (0.35mm)
Size / Dimension:	0.026" L x 0.020" W (0.65mm x 0.50mm)
Mounting Type:	Surface Mount
Features:	--
Approvals:	--
Ratings:	--
Operating Temperature:	-40°C ~ 85°C
Series:	EXCX4
Voltage Rating - DC:	5V
DC Resistance (DCR) (Max):	3 Ohm
Current Rating (Max):	100mA
Impedance @ Frequency:	90 Ohms @ 100MHz
Number of Lines:	2
Filter Type:	Signal Line
Part Status:	Active
Packaging:	Tape & Reel (TR)

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<p>Common mode chokes, or current-compensated common mode chokes, are types of electrical parts commonly used in AC circuits. The EXC-X4CE900U is an example of such - an adjustable high-energy common mode choke. It is made up of two sub-units: the main unit and the adjustable current-compensation unit. The main unit contains two coils winding in parallel wound around a ferrite core, and the current compensation unit is made up of a parallel connected capacitor and a resistor. These two components are grafted onto the end of one of the coils in the main unit and are used to adjust the inductance of the choke.</p><p>The EXC-X4CE900U’s function primarily relies on electromagnetic field principles. The two wound coils create an electromagnetic field around them in the ferrite core. When a current is passed through the coils, the electrical field is intensified and the change in field affects the inductance of the choke. The change in the inductance of the choke is what allows it to inhibit the transmission of noise and unwanted high-frequencies.</p><p>The EXC-X4CE900U is most commonly used as part of EMI filter circuits, low current signal line circuits, and power distribution systems. In EMI filter circuits, the choke can be used to suppress emissions and improve the noise immunity of the circuit. Low current signal line circuits employ the choke to reduce the high frequency noise which could interfere with the signal. In power distribution systems, the choke is often used to suppress the harmonic currents which may otherwise cause problems.</p><p>The EXC-X4CE900U has various advantages compared to other types of chokes such as the large inner diameters of both coils and the high saturation current. High saturation current is important in order to maximize the chokes’ anti-noise performance. Furthermore, the adjustable current compensation unit can be used to adjust the inductance of the choke in order to fit different applications.</p><p>In conclusion, the EXC-X4CE900U is an adjustable high-energy common mode choke which is used in EMI filter circuits, low current signal line circuits and power distribution systems. Its function relies on electromagnetic field principles, and its adjustable current compensation unit makes it especially useful for filtering noise and suppressing harmonic currents.</p>

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