Let me tell you by the list of basic electronic components with pictures.

These include resistors, capacitors, diodes, transistors, LEDs, integrated circuits (ICS) etc.
Most components have two or more terminals (lead or pens). To solder them on the circuit board or on a cable connection.
On this page there is an overview of basic electronic components. You can get detailed information by clicking on the link of each component.
Here are 10 components below!

table of contents hide
1# Resistance - resist the current flow
Trimmer Potentiometer
2# capacitors - get an electrical charge
3# diodes-way valves for the electrical current
4# LED - large light sources
5# Zener -diodes - keep a firm tension over you
6# transistors - make an amplifier or a circuit
7# SCRS-Silicon-controlled rectifiers
7# triac - two SCRs that are connected in parallel
8# diac - parallel to the Zener diode
9# ICS - Integrated circuits
10# resonable backup or poly switch
What is the device with which I have the most problems?
Connections
1# Resistance - resist the current flow
Most of the time we use the resistors to divide a voltage into a smaller voltage. This makes it very useful to reduce the electricity to light -emitting diodes or other loads that can be damaged by too much electricity.
Resistance are also used to increase the time required to charge capacitors and accelerate capacitors.
And they are used to control the amplifier profit.
Continue reading:
- What is a resistance and a color code?
- Resistance symbol
Trimmer Potentiometer
It is a kind of variable resistance. He called it the trimpots. We can set his resistance.

2# capacitors - get an electrical charge
You have many uses, for example
- Store an electrical charge
- To smooth a fluctuating signal
- Block the continuous current while giving up power pulses
Condensators have many types and sizes. We often use these three types of capacitors: ceramics, Mylar and electrolyte.
- The electrolyte has a lot of capacity in its body.
Meaning!It is a polarized capacitor, so it has a positive and negative lead.
His negative lead (Have a point and a shorter lead) must always connect with the negative voltage. - The ceramics and Mylar have less capacity than the electrolyte. They are often very small compared to the electrolytic. So there is a capacity code instead.
Capacity code calculator:
For example, 104J is 0.1 μF at 5% tolerance.- The first and second digits are fixed numbers, both numbers indicate units in PF
- The third digit is multiplied by the number of ten power.
For example 104= 10.000 - Fourth, the level of tolerance is like J = 5%, K = 10%, M = 20%.
How it goes
?What is the104K capacitor value?
10pf - first and second digits
10pf x 104= 100,000 pf. This is 0.1 μF and 10% tolerance.
also read
- Condensator principle function, types and how it works
- Use of capacitors | RC circuit time constant and coupling
3# diodes-way valves for the electrical current
The diodes acts as a rectifier so that the electricity can flow in one direction. It must be properly connected.
Depending on the specification, diodes have different sizes and use.
4# LED - large light sources
Now a day, almost all light sources, we oftenSelect LED. Because you have better efficiency, you also have less power consumption, long lifespan and many colors.
But what we should know:
- LED is the light -emitting diode.
- It works when a forward-bias tension receives over you, and the voltage must exceed a threshold of around 1.8 V and the current of about 10 mA.
- Do not use the voltage more than 2 V (depending on the type of LED). Because it warms up and damaged itself.
- Must be connected in the correct polarity that LED lights up, but if it is connected in the wrong polarity (reverse preload), it is not a current flow.

As shown above, a flat spot on the edge on the base of the LED. Shows the negative (-) or cathode (k) or when the LED is brand new, the short leg will always be k.
5# Zener -diodes - keep a firm tension over you
They have a shape like a diode and also work similarly. A positive current can easily get to the cathode through the anode.
Usually, this current cannot flow back to the anode through the cathode, but if the voltage goes up via the set point voltage, this current can exist. This voltage is referred to as a Zener-diode tension (VZ) and does not change.
For example, VZ 5.6 VAHER is often used as a constant voltage regulator.
Continue reading:Zener -diode: How to use, sample circuit use
6# transistors - make an amplifier or a circuit
Transistors are semiconductor devices with three leads. Normally, a very small amount of electricity on the B leaflo can control a much larger amount of electricity that flow through the C lines through the C lines.
All transistors can be used in two main groups. The first group is the NPN type, almost everyone prefers this type because it works in a positive tension. The other group are PNP types, they work negatively.
Depending on the usage properties, transistors have many different shapes, and their number is printed on his body.
Recommended:How does a transistor work and use?
7# SCRS-Silicon-controlled rectifiers
The SCR is similar to a bipolar transistor. But its symbol resembles a diode with three legs.
It acts as a barrier to prevent electricity from flowing through the anode (a) to the cathode (K).
However, the electricity cannot flow back from the cathode to the anode.
You have the symbol and shape like the above picture.
Continue reading: How SCR works and uses
7# triac - two SCRs that are connected in parallel
However, Triac acts similarly to a SCR.
Therefore, they are well in an alternating current switching controller, they have symbols and shapes, as shown below.
8# diac - parallel to the Zener diode
The diac resembles a zener diode. Normally, it does not let the current flow through both sides. Bis the voltage sinks over it and only reaches the specified value.
Here are the shapes and symbols.
9# ICS - Integrated circuits
IC stands for the integrated circuit. The IC is an electronic device with integrated circuits, with many legs being used.
We have to read a variety of functions in the manual of this specific IC. The most common models are the dual in the package (DIP).
The IC has a pink system as follows:
Take a look at it from the top of the IC, see an index marker that specifies pin 1.Then we start counting clockwise from the first pen near the index point. The number of every IC is printed on the chassis as shown.
On the right is a metal can modeling, usually an op-am-ic. It is a high-quality model, but expensive.
10# resonable backup or poly switch
Have you ever used a backup? It protects all parts from excess current.All passive electronic components and work similarly to PTC thermistors.
There are many sizes to protect against the electricity. As 0.4a 75 V, 72 V 500 MA etc.
Looks:

Cr: fromUxcell
It looks like capacitors, but it's a great fuse.
And see a poly switch symbol.

What is the device with which I have the most problems?
They are diodes and electrolytic capacitors.

Not only that you should learn:
- TOP 20 components data sheet
- How to solder
Selection-Simple Electronics Vol-03
Connections
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I always try to make electronicsEasy to learn.