circuit board factory introduces the function, use and advantages and disadvantages of FPC cable

circuit board factory: 1. what is FPC cable?

Circuit Board Factory Xiaobian said FPC cable, you must know or be familiar with what FPC is. According to its function, FPC can be divided into many types, such as FPC antenna, FPC touch screen, FPC capacitive screen, etc. FPC ribbon cable is one of them. Generally speaking, FPC ribbon cable is a group of connecting wires that can be bent to a certain extent.

Circuit Board Factory: Functional Use of 2. FPC Cable

The function of FPC is to connect two related parts or products. Now, many products use cable because it has a certain stagger. FPC cable has been applied to many products such as printers and notebooks. FPC cable manufacturers are mainly concentrated in the Pearl River Delta region.

circuit board factory: three. The composition and parameters of FPC cable

Because FPC is a kind of FPC, its structure is the same as FPC, generally FPC is relatively long, and both ends are designed as pluggable pins, which can be directly connected to the connector or welded to the product. Generally speaking, there is a circuit in the middle, because FPC cable needs some flexibility. Therefore, the substrate is generally rolled copper, resistant to twists and turns, flexible.

wire layout parameters:

wire width and distance are 3 mils/3 mils;

threaded hole finished product is 0.15mm.

circuit board factory: 4. FPC wiring process

FPC wiring uses surface treatment process is generally gold deposition, with occasional anti-oxidation treatment, however, the anti-oxidation process cannot withstand high temperatures, and the environmental durability is worse than that of sinking gold, and the prices of the two are similar, so most of the sinking gold process is used. In addition, there are tin plating, tin spraying and other processes, but the temperature resistance of FPC is generally below 280 degrees Celsius, while the temperature of tin spraying will be above 300 degrees Celsius. Solder paste is rarely used because of its low hardness.

Advantages and disadvantages of ribbon cables

Advantages:

The use of FPC can greatly reduce the volume and weight of electronic products, which is suitable for the development of electronic products in the direction of high density, miniaturization and high reliability. Therefore, FPC has been widely used in aerospace, military, mobile communications, notebook computers, computer peripherals, PDA, digital cameras and other fields or products. In addition, it can be arranged arbitrarily according to the requirements of spatial layout, and can be moved and expanded arbitrarily in three-dimensional space, so as to realize the integration of component assembly and wire connection.

Disadvantages:

In the process of producing products, cost should be an important consideration. Because the flexible fpc is designed and manufactured for special applications, the initial cost of circuit design, wiring, and photosensitive plates is relatively high. Unless there is a special need to apply flexible FPC, do not use a small amount of use. In addition, due to the investment of a lot of energy, later maintenance is also essential, so welding and rework require trained personnel to operate.

Circuit Board Factory: Storing FPC Ribbon Cable

Unlike other products, FPC flexible circuit boards cannot be in contact with air and water, so how should we properly store this product? First of all, the vacuum of the FPC flexible circuit board cannot be damaged. When packaging, a layer of bubble film should be wrapped around the edge of the box. Bubble film water absorption is good, play a very good moisture-proof effect. Of course, moisture beads are also indispensable.

Secondly, after sealing the box, store the box in a dry, ventilated, partition wall, away from the ground, and avoid sunlight. The temperature of the warehouse is controlled at 233 and 5510 relative humidity. In this case, surface treatments such as gold-plated, gold-plated, tin-sprayed, and silver-plated printed boards can be stored for 6 months, and surface treatments such as silver-plated, tin-plated, and OSP The printed board can be stored for 3 months.