Inductor Codes

February 22, 2024 Post a Comment

Inductor codes

First two digits indicate the value. Third digit is the power to be applied for the first two , this means it is the multiplier and power of 10. For example, 101 is expressed as 10*101 micro Henry (µH). Suffix or fourth letter or alphabet represents the tolerance value of the inductor.

What do the numbers on inductors mean?

A three-digit code is often used to mark small inductors. The first two digits correspond to the first two digits of the value whilst the third digit is a multiplier which gives the number of zeros to be added to give the value in μH.

What is inductor color coding?

The Five color bands inductor as Silver , Red, Blue, Brown & Gold: Silver = Mil-Spec, Red = 2, Blue = 6, Brown = 10, & Gold = ±5% i.e.

What is the symbol of inductors?

Inductance Unit or Symbol However, in the SI system, the henry (H) is the unit of inductance. The unit henry (H) is in honour of Joseph Henry and it refers to the amount of inductance that causes a one-volt voltage when change of current takes place at a rate of one ampere per second.

What is a normal inductance value?

Inductors have values that typically range from 1 µH (10−6 H) to 20 H. Many inductors have a magnetic core made of iron or ferrite inside the coil, which serves to increase the magnetic field and thus the inductance.

What are the types of inductor?

Different Types of Inductors

Iron Core Inductor.
Air Core Inductor.
Iron Powder Inductor.
Ferrite Core Inductor which is divided into,

What is the unit of inductor?

The standard unit of inductance is the henry, abbreviatedH. This is a large unit. More common units are the microhenry, abbreviated µH (1 µH =10-6H) and the millihenry, abbreviated mH (1 mH =10-3 H).

How do you read SMD inductor values?

Surface mount inductor codes Surface mount inductors or chip inductors use color dots instead of color bands. There are generally three dots that are read clockwise from the top. The first two dots indicate the significant digits of the inductance value, and the third dot indicates the multiplier.

How do you find inductance value?

L = μN2A/l

L = Inductance (H),
μ = Permeability (Wb/Am),
N = The coil's number of turns,
A = The coil's circumference,
l = Length of coil (m).

What is SMD inductor?

What is an SMD inductor? Surface Mount Inductors, also known as SMD inductors, are passive components that are placed during surface mount manufacturing processing. They are positive reactance devices, available in many sizes and form factors optimized for particular applications.

What is the color of 5% tolerance?

Gold signifies that the tolerance is ±5%, so the real resistance could lie anywhere between 4,465 and 4,935 ohms.

What Colour codes are used to identify voltage?

120/208/240 Volt AC Wire Colors

Phase 1 - Black.
Phase 2 - Red.
Phase 3 - Blue.
Neutral - White.
Ground - Green, Green with Yellow Stripe, or Bare Wire.

What is inductor and formula?

V=L di/dt, according to the inductor equation. This states that the voltage across an inductor is proportional to the current through the inductor's rate of change.

What is the coil symbol?

A coil is commonly symbolized as a circle with letters and number inside. The letters often represent the type of device, such as M for motor starter or CR for control relay.

What is the symbol and unit of inductor?

The henry (symbol: H) is the unit of electrical inductance in the International System of Units (SI).

What is inductor tolerance?

Tolerance on an inductor ranges anywhere from 20% to 40% of the initial value. Then you'll see a spec of the DCR max. This is the DC resistance of the inductor. And it's basically determined entirely by the length of the wire that's used in wrapping the inductor.

Why are inductors used?

Inductors are primarily used in electrical power and electronic devices for these major purposes: Choking, blocking, attenuating, or filtering/smoothing high frequency noise in electrical circuits. Storing and transferring energy in power converters (dc-dc or ac-dc)

What is the purpose of inductor?

An inductor has the functions of developing electromotive force in the direction that reduces fluctuation when a fluctuating current flows and storing electric energy as magnetic energy.

What are the 5 types of resistors?

Types of Resistors

Fixed Value Resistors. These are the predominant type of resistor configuration, and as the name suggests, they have a fixed resistance value.
Variable Resistors. ...
Resistor Networks. ...
Carbon Film Resistors. ...
Metal Film Resistors. ...
Wirewound Resistors. ...
Metal Oxide Resistors. ...
Metal Strip Resistors.

What is a basic inductor?

The basic structure of an inductor consists of a conductive wire wound in a coil shape and is able to convert electric energy to magnetic energy and store it inside the inductor. The storable amount of magnetic energy is determined by the inductance of the inductor and measured in Henry (H).