MDJE4040T2R2MM Inductors, Coils, Chokes

Q @ Freq:	--
Height - Seated (Max):	0.037" (0.95mm)
Size / Dimension:	0.157" L x 0.157" W (4.00mm x 4.00mm)
Supplier Device Package:	--
Package / Case:	Nonstandard
Mounting Type:	Surface Mount
Features:	--
Inductance Frequency - Test:	1MHz
Operating Temperature:	-40°C ~ 125°C
Ratings:	--
Frequency - Self Resonant:	--
Series:	MCOIL™, MD
DC Resistance (DCR):	115 mOhm Max
Shielding:	Shielded
Current - Saturation:	2.4A
Current Rating:	2.7A
Tolerance:	±20%
Inductance:	2.2µH
Material - Core:	Metal
Type:	Wirewound
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Fixed Inductors

Fixed inductors, also known as fixed chokes, are components designed to both store and release magnetic energy in electrical circuits. Generally, inductors are used to filter out undesired components of a signal, to provide magnetic shielding, and to store energy during the cycles of an AC signal. The MDJE 4040T2R2MM is a fixed inductor that can be used for many different applications due to its wide range of physical characteristics and functionality.

Physical Characteristics

The MDJE 4040T2R2MM is a 4040 size surface-mounted device that measures 4.0mm x 4.0mm with a height of 1.7mm. The inductor has excellent high-frequency characteristics and is constructed from multiple layers of monolithic ceramic dielectric and vacuum-sealed ferrite core material. The device has a rated inductance of 2.2uH, a rated source current of 2.5A, a rated resistance of 3.0 ohms, and a rated voltage of 30V.

Applications

The MDJE 4040T2R2MM has many different potential applications, including power supply filtering, radio frequency interference (RFI) suppression, and switching power supply noise filtering. It is often used in consumer electronics, mobile devices, automotive systems, and other types of electronics. Due to its wide range of physical characteristics, the device can also be used for audio and communications equipment, broadband modems, and more.

Working Principle

The MDJE 4040T2R2MM functions according to the same principles of other fixed inductors. When a current passes through the inductor, it creates a magnetic field around the device. This field then induces a voltage that is proportional to the rate of change of the current, according to Faraday’s Law. The device is designed to hold the current at the same level as the supply voltage, meaning it can store energy over cycles of an AC signal. This allows for filtering on signals that oscillate in polarity, as the current is pulled towards the peak of the supply voltage.In addition to its filtering qualities, fixed inductors can be used for magnetic shielding, meaning they are capable of reducing the effects of electromagnetic interference (EMI) on signals and components. This is achieved by forming a magnetic shunt around the component or PCB in which the inductor is installed, thus reducing the effects of external fields.

Conclusion

The MDJE 4040T2R2MM is a 4040 size surface-mounted device that measures 4.0mm x 4.0mm with a height of 1.7mm. This device has a wide range of physical characteristics, making it suitable for a variety of different applications, including power supply filtering, radio frequency interference (RFI) suppression, and switching power supply noise filtering. The device functions according to the same principles of other fixed inductors, with its primary purpose being to provide filtering and magnetic shielding. It demonstrates excellent high-frequency characteristics and is constructed from multiple layers of monolithic ceramic dielectric and vacuum-sealed ferrite core material.

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