SC-02-20GJ

Voltage Rating - AC:	250V
Package / Case:	Vertical, 4 PC Pin
Height (Max):	0.787" (20.00mm)
Size / Dimension:	0.689" L x 0.669" W (17.50mm x 17.00mm)
Mounting Type:	Through Hole
Features:	--
Approvals:	--
Ratings:	--
Operating Temperature:	-25°C ~ 120°C
Series:	SC
Voltage Rating - DC:	250V
DC Resistance (DCR) (Max):	80 mOhm
Current Rating (Max):	2A
Inductance @ Frequency:	2mH @ 100kHz
Number of Lines:	2
Filter Type:	Power Line
Part Status:	Active
Packaging:	Bulk

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Common Mode Chokes: SC-02-20GJ Application Field and Working Principle

Common mode chokes are electronic components utilized to reduce electrical interference. They are also known as common mode filters, common mode inductors, or common mode noise suppressors. SC-02-20GJ is a type of common mode choke produced by the Korean firm Unimicron. This product has a 2.0mm height and a 20mm width.Applications of the SC-02-20GJ common mode choke range from EMI power supply filters to common mode filter inductors for consumer electronics. In electrical interference suppression, they are usually used for differential-to-single-ended conversion, differential-mode signal isolation, differential-mode noise filtering, and EMI suppression. The SC-02-20GJ is also used as a differential-mode noise suppression component for industrial and medical equipment, or for telecom system devices.The working principle of a common mode choke is based on the concept of impedance. Impedance is the measure of the degree to which a circuit resists the flow of electrical energy. When an AC signal is applied, the choke acts as an inductor that produces a magnetic field around itself. This magnetic field induces a voltage in the wire that opposes the current and helps reduce electrical disturbances from external sources, such as EMI and RFI. The SC-02-20GJ common mode choke is a type of high-dip choke (HDC), which is characterized by its low resistance and high permeability. This allows the choke to achieve an impedance of around 200 metres per second at 50MHz. The choke incorporates two coils—an inner winding and an outer winding—that provide a high-frequency shield, helping to reduce external electromagnetic interferences.The SC-02-20GJ choke exhibits outstanding thermal performance and has an operating temperature range of -40 to +105 degrees Celsius. It is RoHS compliant, UL certified, and has passed IEC 61000-4-2 EMI testing. In addition, it features a variety of different connections, such as copper, cane, gold-plated terminals, and open terminals.In conclusion, the SC-02-20GJ common mode choke from Unimicron is a reliable and affordable solution for reducing electrical interference. It has an impressive operating temperature range and boasts a variety of different connection options. Furthermore, its high-dip design and 200m/s impedance make it perfect for a range of EMI power supply filter applications in consumer electronics, telecom systems, industrial and medical equipment.

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