How much do you know about electronic components on PCB?

PCB Circuit board is the carrier of electronic components , There are different models on it 、 Components of different shapes , Some people may be able to recognize with a wealth of experience , I don't have so much experience with Xiaobai who just came into contact , Today, Xiaobian will teach you to recognize pcb Electronic components on the board .

Although some electronic components have the same shape , But they belong to different types , Its internal structure and use are also different , Such as TO220 The encapsulated component may be a triode 、 Thyristor 、 Field effect tube 、 Or dual diode .TO-3 The packaged components are triodes , Integrated circuits, etc .

Diode package ： Glass package 、 Plastic packaging and bolt packaging .

Diode variety ： Zener diode 、 Rectifier diode 、 Tunnel diode 、 Fast recovery diode 、 Microwave diode 、 Schottky diode, etc . These diodes are packaged in one or more packages .

Some components are difficult to identify for people without experience , For example, patch components , Because it's tiny , Some do not even print , So it is not easy for people with little experience to distinguish . However, chip diode and polar chip capacitor can be easily distinguished from other chips , Because the polar patch elements have polarity marks . Let's take a look at the picture below pcb Electronic components on the board ：

More content can be seen in official account. ：PCBA Information sharing

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