What is an inductor and how to distinguish the inductance value?

  Inductance is the intensity of the current that can be sensed when the coil is moving in a magnetic field. Components made with this property are inductors. The component symbol is “L”, and the “QHP” is commonly used on the inductor and component body.

The inductor is a set of series coaxial coils wound on an insulating skeleton or a magnetic core or a core by an enameled wire, a yarn wrapped wire or a plasticized wire. The main function of the inductor is to isolate, filter,or form a resonant circuit with capacitors and resistors.

  The unit of inductance is Henry (H), millihenry (mH), and microhenry (uH). The inductor is polarized. The first pin of the inductor is indicated by a sharp corner. When inserting, it should be inserted into the hole marked with the white point on the board.

  The shape of the axial lead inductor and the resistor are very similar, and the difference between them is that the inductor has a wide silver color ring at one end. The axial lead inductor is represented by five color rings, the first ring silver ring is twice larger than the other color rings, the lower three rings indicate the millihenry of the inductor, and the fifth ring represents the inductance error value. The identification method of the fourth ring is the same as that of the four-ring resistor. The shape of the inductor is shown in the figure.

Fixed Inductors : 744765116A

For example, the color of the last four rings of an inductor is red, red, black, and silver, and the inductance is 22uH士10%. If the color of the second or third ring is gold, this golden ring represents the decimal point of the inductance value.

For example, the color of the last four rings of an inductance value is yellow, gold, purple, and silver, and the inductance value is 4.7μH 士10%.

If you want to know more, our website has product specifications for the inductors, you can go to ALLICDATA ELECTRONICS LIMITED to get more information.