PCB News - What are the unknowns in pcba?

What are the unknowns in PCBA?
Each component in the PCBA has its role, and they also play a role in their respective positions, but there are still some places that few people know. Today, let's talk about the unknown places in the PCBA.

1. Capacitance

Capacitors are set up by distributing the voltage of each place on the circuit board. There are generally about 10. The brand is generally Samsung. It is divided into three types: solid, semi-solid, and liquid. The volume is small, and the common ones are cylindrical and elliptical. Type two. According to different circuit boards, there are different capacitors, such as computers. Its main distribution is as follows: electrolytic capacitors, solid capacitors, and ceramic capacitors.

2. Field effect tube

It is a kind of DC semiconductor electron tube, usually in the shape of a square, black super hard material, about the size of a thumb. It usually responds to voltage output, stabilizes the voltage direction, and reduces noise.

3. SMD crystal oscillator

This is also a square, but with special markings, such as the four corners of different colors, can provide high-precision oscillation.

4. Chip resistors

It is also a kind of capacitor, but it looks different. It is a kind of ceramic capacitor. It has a relatively large volume and is not on the periphery of the circuit board.
The above four components in PCBA have their own special functions. You may not know or few people know before, but I finally understand through the introduction of today's editor. This is the related content of the unknown places in PCBA
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