PCBA for non-contact infrared thermometer

What is PCB?

Oct 08, 2020

PCB, as the "mother of electronic products", is a bridge that carries electronic components and connects circuits. It is widely used in communications, consumer electronics, computers, automotive electronics, industrial control, medical equipment, national defense, aerospace and other fields. It is a modern electronics indispensable electronic components in information products. It is a provider of electrical connections for electronic components. The downstream of the PCB industry covers almost all electrical circuit products, and the core applications with the largest output value include communication equipment, computers, consumer electronics and automotive electronics. With the development of electrification and automation in human society, the application range of PCB is becoming wider and wider, and there are no other substitutes for the time being.

1. Classification according to the strength of PCB substrate

(1) Rigid printed boards Printed boards made of rigid substrates;

(2) Flexible printed boards Printed boards made of flexible substrates, also known as flexible printed boards;

(3) Rigid and flexible printed boards are printed boards made by using flexible substrates and combining them with rigid substrates in different areas.

2. Classification according to the method of making conductive patterns on PCB circuit boards

(1) Subtractive PCB Printed circuit boards made by subtractive technology;

(2)Additive PCB Printed circuit boards produced by the additive process.

3. According to the PCB circuit board substrate classification

(1)Organic printed boards. Conventional printed boards are all organic printed boards, which are mainly composed of three materials: resin, reinforcing materials and copper foil. Resin materials include phenolic resin, epoxy resin, polyimide, /A resin, etc.;

(2)Inorganic printed boards are commonly referred to as thick film circuits, which are composed of ceramics, metal aluminum and other materials. Inorganic printed boards are widely used in high-frequency electronic instruments.

4. Classification according to the conductive structure of the PCB circuit board

(1)Single-sided printed circuit board refers to a printed circuit board with conductive patterns on only one side. Because the wires only appear on one side, this kind of printed circuit board is called a single-sided printed circuit board. (Referred to as single panel)

(2)A printed board with conductive patterns on both sides of the double-sided printed board, because the area of the double-sided board is twice as large as that of the single-sided board, and the wiring can be staggered (it can be wound to the other side), which is more suitable for more complex On the circuit.

(3)Multi-layer printed board A printed board made of 3 or more layers of conductive patterns and insulating materials alternately bonded together and laminated, referred to as a multilayer board, requires the conductive patterns between layers to be connected to each other as needed.

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