TF2420VU-202Y5R0-01

Voltage Rating - AC:	--
Package / Case:	Vertical, No Base, 4 PC Pin
Height (Max):	--
Size / Dimension:	0.906" Dia x 0.787" W (23.00mm x 20.00mm)
Mounting Type:	Through Hole
Features:	--
Approvals:	--
Ratings:	--
Operating Temperature:	-20°C ~ 120°C
Series:	TF
Voltage Rating - DC:	--
DC Resistance (DCR) (Max):	90 mOhm
Current Rating (Max):	5A
Number of Lines:	2
Filter Type:	Power Line
Part Status:	Obsolete
Packaging:	Bulk

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Common Mode Chokes

Common mode chokes (CMCs) are components used to remove undesired interference signals in power systems by providing an impedance for common-mode currents. They are typically used in applications where noise reduction is critical, such as in DC/DC converters, automotive electronics, and digital display panels. The TF2420VU-202Y5R0-01 is a common mode choke designed for use in these types of applications.

Application Field

The TF2420VU-202Y5R0-01 is designed for use in board-to-cable or cable-to-cable connection systems to reduce EMI interference. This common mode choke is ideal for various DC/DC converter applications that require a wide operating temperature range, from −55°C to +125°C. The choke can also help reduce EMI peaks, preventing them from travelling onto other circuits.This choke features a low DC resistance (1.2Ω max.), low inductance (2.39μH max.) and high attenuation (72~80dB). In addition, this filter has a high-saturation current rating of 506mA and is suitable for system output that requires high-saturation current. The industry-standard packaged size of the TF2420VU-202Y5R0-01 makes it suitable for use in most high-density applications.

Working Principle

Common mode chokes provide an inductive impedance to common mode currents, blocking them from reaching other circuits. The TF2420VU-202Y5R0-01 utilizes a core and two windings (see figure 1). The core serves to increase the efficiency of the inductor and allows the TF2420VU-202Y5R0-01 to be used in high-density applications.The two windings connect different power supplies together, and the way they are wound onto the core results in the interference signals in the two windings destroying each other. This is because the current in the two windings is equal in magnitude but opposite in direction. The resulting differential mode currents cancel each other out, thus reducing common mode currents. The PF2420VU-202Y5R0-01 also has internal capacitors to reduce high-frequency noise and improve the overall performance.Figure 1. Cross-section of the TF2420VU-202Y5R0-01

Conclusion

The TF2420VU-202Y5R0-01 is a common mode choke designed for use in DC/DC converters, automotive electronics, and digital display panels. It provides an inductive impedance for common mode currents, blocking them from reaching other circuits. It utilizes a core and two windings, with the windings connected in such a way that the interference signals in the two windings cancel each other out. The choke also features a low DC resistance, low inductance, and high attenuation. The frame-standard packaged size makes the TF2420VU-202Y5R0-01 suitable for use in most high-density applications.

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