The single-sided printed circuit board is referred to as a single-panel. It was developed in the early 1950s with the advent of transistors and developed in the United States. At that time, the main method of fabrication was copper foil direct etching.
Single panel history:
From 1953 to 1955, Japan used imported copper foil to make a paper phenolic copper foil substrate for the first time, and it was widely used in radios. In 1956, after the appearance of Japanese circuit board
manufacturers, the manufacturing technology of single-panel immediately advanced. In terms of materials, paper phenolic copper foil substrates were mainly used in the early days. However, due to the low electrical insulation of phenolic materials, poor solder heat resistance and distortion, materials such as paper epoxy resin and glass epoxy resin were successively The single panel required for the development of consumer electronic devices is almost entirely made of paper phenolic substrate.
After finishing the history of the single panel, do you want to know its characteristics?
The single panel is on the most basic PCB, with the parts concentrated on one side and the wires concentrated on the other side. Because the wires only appear on one side, we call this PCB a single-sided. Because single-panel has many strict restrictions on the design line (because there is only one side, the wiring can not cross and must be around the path), so only the early circuit used this type of board;
The single-panel wiring diagram is mainly based on Screen Printing, that is, a resist is printed on the surface of the copper, and after etching, the mark is printed with a solder resist, and finally the via hole is finished by punching. shape. In addition, some of the products produced in small quantities and diversely use a photoreceptor to form a pattern.
The above is the information that our company collects for you about the single panel, I hope to help you understand it further.
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