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What is Kinds of FR4 Prototype PCB Product Dry Film?

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  3. What is Kinds of FR4 Prototype PCB Product Dry Film?

PCB dry film is a polymer compound, which produces a polymerization reaction after ultraviolet irradiation, forming a stable substance attached to the board surface, thereby achieving the function of blocking electroplating and etching. What are the types of fr4 circuit board dry film?

1. Single-sided PCB Board
The substrate material is mainly paper phenol (phenol) copper sheet laminate (paper phenol as the bottom, copper foil on the top) and paper epoxy (Epoxy) copper sheet laminate. Most of them are used in home appliances such as radios, AV appliances, heaters, refrigerators, washing machines, as well as commercial machines such as printers, vending machines, circuit machines, and electronic components. The advantage is that the price is low.

2. Double-sided PCB
The substrate material is mainly Glass-Epoxy copper sheet laminate, GlassComposite (glass composite) copper sheet laminate, and paper Epoxy copper sheet laminate. Most of them are used in personal computers, electronic musical instruments, multifunctional telephones, automotive electronic equipment, electronic peripherals, electronic toys, etc.
As for Glass styrene resin copper laminates, Glass polymer copper laminates are mostly used in communication equipment, satellite broadcasting equipment, and mobile communication equipment due to their excellent high-frequency characteristics. Of course, the cost is also high.

3. 3-4 Layer PCB
The substrate material is mainly Glass-Epoxy or benzene resin. The main uses are personal computers, Me (Medical Electronics, medical electronics) machines, measuring machines, semiconductor testing machines, NC (Numeric Control, numerical control) machines, electronic switches, communication machines, memory circuit boards, IC cards, etc.
There are also glass composite copper sheets. Laminated boards are multi-layer PCB materials, mainly focusing on their excellent processing characteristics.

4. 6-8 Layer PCB
The substrate material is still Glass-Epoxy or Glass benzene resin. For electronic switches, semiconductor testing machines, medium-sized personal computers, EWS (Engineering WorkStation, engineering workstations), NC and other machines.

5. Multilayer board with more than 10 Layers
The substrate is mainly made of Glass benzene resin material, or Glass-Epoxy is used as the multi-layer PCB substrate material. The application of this type of PCB is relatively special, most of which are large computers, high-speed computers, communication machines, etc., mainly because it has high-frequency characteristics and excellent high-temperature characteristics.

6. Other PCB Substrate Materials
Other PCB substrate materials include aluminum substrates, iron substrates, etc. The circuit is formed on a substrate, and most of them are used in rotary (small motor) automobiles. In addition, there is also a flexible PCB (FlexiblPrintCircuitBoard), the circuit is formed on materials such as polymers and polyesters, which can be used as single-layer, double-layer, and multi-layer boards.
This kind of flexible circuit board is mainly used in the movable parts of cameras, OA machines, etc., and the connection between the above-mentioned rigid PCBs or the effective connection combination between the rigid PCB and the flexible PCB. As for the connection combination method, due to its high elasticity, its shape is diversification.

Posted on January 14, 2022Industry News

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