2020-40J

DC Resistance (DCR):	1.8 Ohm Max
Height - Seated (Max):	0.215" (5.46mm)
Size / Dimension:	0.200" L x 0.100" W (5.08mm x 2.54mm)
Supplier Device Package:	--
Package / Case:	Radial
Mounting Type:	Through Hole
Inductance Frequency - Test:	7.9MHz
Operating Temperature:	-55°C ~ 125°C
Ratings:	--
Frequency - Self Resonant:	50MHz
Q @ Freq:	60 @ 7.9MHz
Series:	2020
Shielding:	Unshielded
Current - Saturation:	--
Current Rating:	330mA
Tolerance:	±5%
Inductance:	4.7µH
Material - Core:	Iron
Type:	Toroidal
Part Status:	Active
Packaging:	Bulk

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Fixed Inductors: 2020-40J Application Field and Working Principle Inductors are widely used electronic components for storing energy in the form of magnetic fields. The 2020-40J is a type of fixed inductor – a passive electronic component that generally consists of a coil of wire wound into a cylindrical core of ferromagnetic material or air. When electric current runs through the coil, a magnetic field is created around it, which is used to store energy from the current. The 2020-40J is a specialized type of inductor used in low frequency analog circuits. It provides major benefits such as high operating frequencies and low dissipation. The 2020-40J is widely used in a variety of applications, including antennas, RF communications, amplifiers, power supplies, radio receivers, and amplifiers.The operating principles of 2020-40J fixed inductors depend largely on their size and construction. Generally, they employ either ferromagnetic or air cores, consisting of a coil of copper or aluminum wire that is wound into the core material. The application field of these inductors is determined by the number of turns in the coil and the core material employed. For example, ferromagnetic-core inductors are used in applications that require a high-value inductance. They are designed to have many turns of wire, which create a high inductance value and a large change in the current through the inductor when input voltage is applied. On the other hand, air-core inductors suffer from lower inductance values due to fewer turns in the coil, but they provide smaller variations in current when input voltage is applied. In addition to the number of turns in the coil, the size of the core also affects the inductance value of an inductor. Large core sizes increase the inductance of the inductor as well as the core material. Ferromagnetic materials add magnetic characteristics to the inductor and increase its inductance value. On the other hand, air-core inductors are limited to a low inductance value due to their lack of a magnetic core material.The 2020-40J is a type of fixed inductor that is often used in low frequency analog circuits. It has a wide application field, but works on the same principles of all fixed inductors: high operating frequencies, low dissipation, and higher ranges of inductance. As a result, it can be employed in a variety of applications, including antennas, RF communications, amplifiers, power supplies, radio receivers, and amplifiers.

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