What is the veneer made of? What's the difference between a single panel and a double panel?

What is a single panel? Single board is the abbreviation of single-sided circuit board, which is widely used in the assembly system of various core components of electronic equipment and is an indispensable part of the normal operation of electronic equipment. Its importance is equivalent to the foundation of a building. Only with a single panel with excellent performance can we make better electronic products on this basis. From small radios to large LCD TVs, we can see the internal structure. For non-professional friends, they may not know much about the material of veneer. Don't worry, today I will tell you something about veneer, including the material and characteristics of veneer.

Single panel history

From 1953 to 1955, Japan made paper phenolic copper foil substrate with imported copper foil for the first time, and it was widely used in radio. 1956, after the emergence of Japanese professional circuit board manufacturers, the manufacturing technology of single panel made rapid progress. In terms of materials, paper-based phenolic copper foil substrate was mainly used in the early days. However, because of the low electrical insulation, poor welding heat resistance and easy deformation of phenolic materials at that time, paper-based epoxy resin and glass fiber epoxy resin were developed one after another. At present, almost all the veneers needed by consumer electronic machines use paper-based phenolic substrates.

Single panel feature

A single panel is on the most basic PCB, with parts concentrated on one side and wires concentrated on the other side. Because the wires only appear on one side, we call this PCB a single-sided PCB. Because the single board has many strict restrictions on the design of the circuit (because there is only one side, the wiring can not cross, and a separate path must be bypassed), only the early circuits used this board;

The wiring diagram of a single panel is mainly screen printing, that is, resist is printed on the copper surface, marks are printed after etching to prevent welding resistance, and finally the guide holes and shapes of the parts are completed by punching holes. In addition, some small-batch, multi-variety products are patterned with photoresist.

Veneer material

Single-sided printed circuit board (PCB) is a product developed by the United States with the appearance of transistors in the early 1950s. At that time, the main manufacturing method was directly etching copper foil. From 1953 to 1955, Japan made paper phenolic copper foil substrate with imported copper foil for the first time, and it was widely used in radio. 1956, after the emergence of Japanese professional circuit board manufacturers, the manufacturing technology of single panel made rapid progress. In terms of materials, paper-based phenolic copper foil substrate was mainly used in the early days. However, because of the low electrical insulation, poor welding heat resistance and easy deformation of phenolic materials at that time, paper-based epoxy resin and glass fiber epoxy resin were developed one after another. At present, almost all the veneers needed by consumer electronic machines use paper-based phenolic substrates.

Single panel price

Manufacturer: Panyu Yuan Bo Electronics Factory.

The single board provided by Panyu Yuan Bo Electronics Factory is specially used for digital cameras, video cameras, etc., and shall not be used for other electronic products. The price of this single panel is relatively high, and one square meter is sold in 650 yuan. Organic resin is chosen as the material, which is a very good insulating material, and composite matrix is chosen as another material, which is a reinforcing material.

Manufacturer: Shenzhen Xingtianhua Technology Co., Ltd.

Xingtianhua Technology Co., Ltd. provides the most common single panel, and the price varies according to the purchase quantity. Price 10-20 m2, 125 yuan, 2 1-40 m2, 122 yuan, and1/8 yuan larger than 4 1 m2. From the material point of view, copper is the basic material, and there are other rosin. Belonging to rigid machinery in terms of attributes, it can meet the requirements of different levels.

Manufacturer: Shenzhen Fuhengda Electronics Co., Ltd.

The single panel sold by Fuhengda Electronics Co., Ltd. has three price ranges, and the prices are different according to the wholesale volume. If you buy 3-9 square meters, the price of a single panel is 160 yuan; If you buy 10-49 square meters, the price of a single panel is 150 yuan; Buy more than 50 square meters, single panel price 135 yuan. The basic material of this PCB veneer is copper, the insulating material is organic resin, and the reinforcing material is glass fiber cloth. Veneer manufacturer

Single panel manufacturers include: Shenzhen Yiwei Circuit Co., Ltd., Shenzhen Qiyuanxing Electronics Co., Ltd., Shenzhen Yuheng Electronics Co., Ltd., Shenzhen Baoan District Shajing Street Innovation Electronic Circuit Board Factory, Shenzhen Xinweifu Electronics Co., Ltd. and Cangzhou Zhuotai Electronics Co., Ltd.

What's the difference between a single panel and a double panel?

A single panel is on the most basic PCB, with parts concentrated on one side and wires concentrated on the other side. There are wires on both sides of the double panel. However, if you want to use double-sided wires, you must establish an appropriate circuit connection between the two sides. The "bridge" between these circuits is called a via. Guide holes are small holes filled or coated with metal on PCB, which can connect wires on both sides. Because the area of double panel is twice that of single panel, and because the wiring can be staggered (can be wound to the other side), it is more suitable for more complex circuits than single panel.