With the progress of The Times and science and technology, now more and more circuit boards using SMT components, and SMT components with its small size and easy to maintain more and more popular, we often deal with electrical appliances, but many people do not know, the name of electronic components on the circuit board.

The following is the cross-section diagram of these components after cutting and grinding, to share with you

1、Capacitor

【Surface mount capacitor】

【Electrolytic capacitor】

【Ceramic capacitor】

【Tantalum capacitor】

2、Resistance Having said capacitance, now we have resistance. What does it look like inside a resistance? Part of the spiral groove left by the device can be seen. During the manufacturing process, the machine can remove the carbon film and increase the resistance value until the target value is reached.

【Metal film resistor】

【Cracked carbon resistor】

3、Inductor

4、LED

5、DIODE

6、Transistor

7、Keypad

Press the button, the center contact and external contact short circuit

8、Electronic valve

9、Network transformer 

This is a cross section of the Ethernet network transformer, between the Ethernet PHY chip and the cable, used for isolation and to provide security.
 

10、Button cell

The following steps are required to make the cross section of the above components:
【1】The components are fixed by vacuum immersion in epoxy resin;
【2】Remove the surface part of the component by grinding or cutting；
【3】The rest is polished to show a clear image of the section；
【4】To take pictures and observe them under a magnifying glass or microscope.