SC-30-100

Voltage Rating - DC:	250V
Package / Case:	Horizontal, No Base, 4 PC Pin
Height (Max):	1.378" (35.00mm)
Size / Dimension:	2.441" Dia (62.00mm)
Mounting Type:	Through Hole
Features:	--
Approvals:	--
Ratings:	--
Operating Temperature:	-25°C ~ 105°C
Voltage Rating - AC:	250V
Series:	SC
DC Resistance (DCR) (Max):	6 mOhm
Current Rating (Max):	30A
Inductance @ Frequency:	1mH @ 100kHz
Number of Lines:	2
Filter Type:	Power Line
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Common Mode Chokes

Common mode chokes (CMCs) are a type of filter device used to reduce the electromagnetic interference (EMI) that noise sources create in electrical systems. These devices consist of two windings that are connected to opposite ends of a core material. The windings form an inductor that has a common-mode behavior, meaning that the magnetic field of the noise current is cancelled out in the windings. By connecting a CMC in series with a noise source, the EMI can be significantly reduced or eliminated.The SC-30-100 is a common mode choke designed to filter out common-mode noise in automobile applications. It is rated for 30 amps and 100 mH inductance, and has been optimized for use in automotive audio systems. This CMC is constructed with a special over-molded housing, which provides superior thermal and mechanical protection. It also has a wide temperature operating range from –20 to 105° C.The working principle of the SC-30-100 is based on Faraday’s law of induction. The two windings of the CMC wrap around a ferrite core, creating a linear relationship between the magnetic flux and the current flowing through the windings. The magnetic field created by the current is then contained in the core, which causes the adjacent windings to induce a current of their own. This effect is known as self-induction, and it is what allows CMCs to act as a noise filter.When a noise source is connected in series with the CMC, the current in the windings will be in opposite directions. The resulting large magnetic field within the core will induce a voltage in the windings, which will cause a counter EMF that opposes the noise current. This cancels out the noise current, reducing the amount of EMI generated.In addition to reducing the amount of EMI, CMCs can also be used to shield components from Electric Magnetic Pulse (EMP) interference. This type of interference can disrupt or damage sensitive electronics, making it important to have proper shielding. When a CMC is connected in series with the EMP source, a large magnetic field will be generated, which will absorb or reflect the pulse. This helps to reduce the amount of EMP that reaches the sensitive components, protecting them from damage.CMCs are widely used in automotive, aerospace, medical, and industrial applications. They are an effective and reliable way to reduce EMI and EMP interference, allowing electrical systems to operate more efficiently. The SC-30-100 is a popular CMC designed for automotive use, and is capable of handling the high currents and temperatures found in automotive applications.

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