B82765C1A5

Voltage Rating - AC:	440/250V
Package / Case:	Box, 8 Wire Leads
Height (Max):	1.850" (47.00mm)
Size / Dimension:	2.953" L x 2.953" W (75.00mm x 75.00mm)
Mounting Type:	Wire Lead
Features:	--
Approvals:	--
Ratings:	--
Operating Temperature:	--
Series:	B82765
Voltage Rating - DC:	--
DC Resistance (DCR) (Max):	20 mOhm (Typ)
Current Rating (Max):	16A
Inductance @ Frequency:	1.8mH @ 10kHz
Number of Lines:	4
Filter Type:	Power Line
Part Status:	Obsolete
Packaging:	Tray

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Common Mode Chokes (CMCs), also known as common mode inductors and line filters, are electrical components designed to provide a low impedance and high impedance path between two signals. The low-impedance path can be used for AC signals - such as those found in power supplies, while the high impedance path can be used for DC signals - such as those found in signal conditioning circuits. The purpose of a common mode choke is to reduce common mode interference (CMI), which is a type of interference that can be caused by unintentional signals that travel between multiple circuits. The B82765C1A5 is a common mode choke typically used in AC/DC power supplies, Ethernet applications, and signal conditioning. It is a surface mount component with an inductance value of 3.3uH and a current rating of 1 A. The common mode effective frequency range is up to 10MHz.The working principle of the B82765C1A5 involves two inductor windings - one common mode and the other differential. The common mode winding provides a high impedance path for common mode signals. This path is typically designed to reject high-frequency common mode noise. The differential winding provides a low impedance path for differential mode signals. This path is typically designed to reject DC components and low-frequency differential noise.The common mode choke has two basic functions: one to reduce common mode noise, and the other to reduce differential mode noise. Common mode noise is generated when two or more circuits operate at different voltages or when higher frequency signals pass between them. This type of interference is generally caused by voltage or current fluctuations between two circuits. As such, it is important to use a common mode choke to reduce this type of interference.The differential mode noise is generated when digital signals pass through two circuits that are on the same track. It is then common to see this type of noise at frequencies that are lower than the cut-off frequency of the common mode choke. This type of interference is typically caused by noise on one conductor that is then coupled onto the opposite conductor. The differential winding combines with the capacitance to form a low-pass filter which reduces the noise by blocking out the high frequencies.In summary, the B82765C1A5 common mode choke is used in a variety of applications to reduce common mode interference and differential mode interference. It is specifically designed to provide a low impedance path for differential mode signals and high impedance path for common mode signals, which allow it to reject DC components, low-frequency differential noise, and high-frequency common mode noise. This makes it ideal for a range of applications where reliable power supplies, clean signals, and noise-free Ethernet data are required.

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