Type specification and soldering method of flexible cable

What is the flexible cable? Flexible Flat Cable (FFC) is also called Flexible Flat Cable. The number and spacing of wires can be arbitrarily selected to make wiring more convenient, greatly reduce the volume of electronic products, reduce production costs and improve production efficiency. It is most suitable for data transmission cables between moving parts and mainboards, between PCB boards and PCB boards, and in miniaturized electrical equipment. Welding method of FPC flexible flat cable? 1. When the solder is tin-lead alloy and the soldering surface is copper, the solder first wets the soldering surface. With the wetting phenomenon, the solder gradually diffuses to the metal copper, forming an adhesive layer on the contact surface between the solder and the metal copper, so that the two are firmly combined. Therefore, the soldering is completed through the three physical and chemical processes of wetting, diffusion and metallurgical combination. 2. To achieve a good solder joint, the object to be soldered must have a surface completely free of an oxide layer. However, once the metal is exposed to the air, an oxide layer will be formed. This oxide layer cannot be cleaned with traditional solvents. At this time, the flux must be relied on to react chemically with the oxide layer. After the flux removes the oxide layer, the clean surface of the object to be soldered can be bonded with the solder. 3. The specific operation steps of soldering iron welding can be divided into five steps, which is called five-step engineering method. In order to obtain good welding quality, we must strictly follow the steps. Welding step by step is one of the keys to obtain good solder joints. 4.Before welding the FPC flexible flat cable, observe whether each solder joint (copper sheet) is smooth, oxidized, etc. When welding the articles, the welding point shall be focused to avoid the short circuit caused by the poor welding of the FPC flexible flat cable. After using the soldering iron, the residual tin of the soldering iron head shall be wiped on the sponge. Model and specification of flexible flat cable: The common specifications of flexible flat cable include 0.5mm, 0.8mm, 1.0mm, 1.25 mm, 1.27 mm, 1.5mm, 2.0mm, 2.54 mm and other flexible cables with various spacings. At present, the flexible flat cable is widely used for the connection between the printing head of various printers and the mainboard, and the signal transmission and board connection of products such as plotters, scanners, copiers, stereos, liquid crystal electrical appliances, fax machines, various DVD players, etc. In modern electrical equipment, there is almost no place. Common models of flexible flat cable are as follows: Type A: both ends are connected and the reinforcing plate is pasted on the insulating adhesive paper; Type B: the reinforcing plate is directly pasted on the insulating adhesive paper in a crossed manner; Type C: the reinforcing plate at both ends is directly pasted on the conductor; Type D: the reinforcing plate at both ends is directly pasted on the conductor in a crossed manner; Type E: the reinforcing plate at one end is pasted on the insulating adhesive paper and the reinforcing plate at the other end is directly soldered with tin; Type F: the reinforcing plates at both ends are directly pasted on the insulating adhesive paper, and the internal half is peeled off; Type G: the tin is directly soldered at both ends.

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