Single Layer PCB

Single-sided printed circuit board is in the early 1950s with the emergence of the transistor, developed by the United States as the center of the product, which were mainly copper production methods to direct etching method for the mainstream. From 1953 to 1955, Japan's imports of copper for the first time made ​​use of paper phenol copper foil substrate, and a large number of applications on the radio on. In 1956, Japan's professional circuit board manufacturer appears, and then a single panel manufacturing technology progresses rapidly. In material terms, early in paper phenol copper foil substrate mainly because of the phenol material was low electrical insulation, heat resistance welding, twisting and other factors, there is another paper ring gas resin, fiberglass epoxy resin and other materials to be development, the current consumer electronic equipment required for single-sided, almost phenol substrates using paper plates.

Printed circuit board with copper on only one side. Generally with the through-hole technology, the copper in the solder side, opposite to any component placement. All through holes will be Non-plated. Pad should be large enough to provide mechanical support part of the leadership. Pad is too small can be easily torn from the PCB board. And the copper layer surface mount technology components, or areas where the top plate.

In order to avoid your work was shelved, use a text label your copper layer. This simple addition will avoid confusion about orientation of the copper and drill files. If you are in the component side copper layer, and the assembly on the top of the board design, the text should be the correct reading. If the copper layer is the bottom, opposite your component, the text should leave the reading (reversed) looked through the plate.