sales@ipcb.com
FPC is made of polyimide or polyester film as a substrate with a high degree of reliability, excellent flexible printed circuit boards, with high wiring density, lightweight, thin thickness, mainly used in cell phones, notebook computers, PDAs, digital cameras, LCMs, and many other products. FPC cable can withstand millions of times of dynamic bending without damage to the wires, according to the requirements of the spatial layout of arbitrary movement and expansion to achieve three-dimensional assembly to achieve the effect of component assembly and wire connection integration, with other types of circuit boards can not be compared. PFC cable can withstand millions of dynamic bending without damage to the wire, according to the requirements of the spatial layout of the arbitrary movement and expansion, to achieve three-dimensional assembly, achieve the effect of component assembly and wire connection integration, with other types of circuit boards can not be compared with the advantages.
Single-sided FPC production process: opening → drilling → dry film → alignment → exposure → development → etching → stripping → surface treatment → cover film → pressing → curing → surface treatment → immersion nickel gold → printing characters → shearing → electrical testing → punching → final inspection → packaging → shipment.
Due to the design's lightweight, the boards can be shaped to fit the enclosure, which can be packed into a small volume, reducing the overall size of the final product. Flex PCBs eliminate the overuse of wiring harnesses and connectors in PCBs.FPCs are widely used in mechanically sensitive devices because their flexibility allows the boards to be resistant to vibration. Flexible PCBs are more durable than traditional circuit boards, but the manufacturing process for flexible PCBs is sensitive and complex.
FFC, flexible flat cable, is a kind of PET insulation material and very thin tinned flat copper wire, through high-tech automated equipment production line pressed together into a new type of data cable, has a soft, arbitrary bending folding, thin thickness, small size, simple connection, easy to disassemble, easy to solve the electromagnetic shielding (EMI) and so on.FFC arbitrarily selects the number of wires and spacing, making the linkage more convenient, and greatly reducing the number of wires. FFC can be used in any number of wires and spacing to make the connection more convenient, greatly reduce the volume of electronic products, reduce production costs, and improve production efficiency, most suitable for moving parts and motherboards, PCB boards to PCB boards, miniaturization of electrical equipment for the data transmission cable used. Common specifications are 0.5mm, 0.8mm, 1.0mm, 1.25mm, 1.27mm, 1.5mm, 2.0mm, 2.54mm, and other flexible cable spacing. At present, it is widely used in the connection between various printer printheads and motherboards, the signal transmission and board-board connection of plotters, scanners, copiers, stereos, LCD appliances, fax machines, various kinds of video players, and other products.
FPC cables are usually composed of three parts: metal terminals, connectors, and keepers. The metal terminals are the key components that connect the FPC to other electronic components. These terminals are usually conductive alloy materials with excellent electrical conductivity and corrosion resistance. The shape and arrangement of the metal terminals will directly affect the function and performance of the connector. The common metal terminal structure has pin type, patch type crimp type, and other forms, their selection is mainly based on specific application scenarios and requirements. The connector is the interface between the connector and other equipment. The design of the connector should not only consider the stability and reliability of the connection but also need to consider the convenience of user operation. In practice, the plugging and unplugging performance of the connector directly affects the service life of the connector and maintenance costs. The connector is the interface between the connector and other equipment. The design of the connector should not only consider the stability and reliability of the connection but also need to consider the convenience of user operation. In practical applications, the plugging and unplugging performance of the connector directly affects its service life and maintenance costs.
Features:
1. It can be freely bent, folded, and coiled, and can be moved and retracted at will in three-dimensional space.
2. Good heat dissipation performance, can use FPC to reduce the volume.
3. Realize lightweight, miniaturization, and thin, to achieve the integration of component devices and wire connection.
FPC can be divided into many kinds according to its function, such as FPC antenna, FPC touch screen, FPC capacitive screen, etc. FPC cable is one of them, which is the connecting wire group that can be bent to a certain degree.FPC cable is a kind of FPC, and its composition is the same as that of FPC.FPC is generally long, and the two ends are designed to be pluggable pins that can be directly connected with the connector or Welded to the product. The center is generally for the line, because the FPC line is required to have a certain degree of flexibility, therefore, the substrate is generally calendered copper, zigzag resistance, and flexibility. Line parameters: minimum line width line spacing of 3mil/3mil; the minimum over-wire hole finished product to 0.15mm.
The FPC connector test program is divided into an appearance test, an electrical performance test, and a reliability test.
1. Appearance test
Check the surface of the FPC connector for blistering, cracking, delamination, and other undesirable phenomena.
Check whether the adhesive on the back of the FPC connector has fallen off.
FPC connector size, and specifications are consistent with the tightness of the male and female seat
Folding resistance: test whether there is any abnormality in the function of FPC after bending and whether the SMD components have been shifted.
Soldering: whether there is false soldering, less tin, even tin, discoloration, deformation, and other defects.
2. Electrical performance test
On-off test: line on-off test, can not appear open or short circuit, FPC line length (from one end to the other) of the on-resistance value required ≤ 1Ω
Solderability test: FPC pads on the tin, whether it is good
Installation test: installed in the corresponding cell phone, to see whether its function is good.
3. Reliability test
Tensile, bending test: test the FPC connector tensile ability, after bending performance is qualified
Damp heat, high-temperature test: in the damp heat, high temperature, FPC has no deformation, paint, color, oxidation, corrosion, discoloration, or other phenomena.
High and low-temperature storage, work test: FPC connectors in the high and low-temperature storage state and work state is up to standard
FPC cables' test frequency is high, and the demand for current is big, accordingly need to connect the module can have a high current transmission function. The performance of the high-current slug micropin modules can be adapted to the testing needs of FPC connectors and is a highly reliable test connection module. When the FPC connector testing needs to transmit current, the high-current slug micro pin modules are electrically stable within the range of 1-50A and have very good conduction and connection functions. In the face of small pitch, high-current shrapnel micro-pin modules adaptable, one-piece molded shrapnel in the small pitch can take the smallest value of 0.15mm, stable performance, excellent performance. In the high-frequency testing needs of FPC connectors, high-current shrapnel micro-pin modules have a service life of up to 20w times, without frequent replacement can always maintain good performance, greatly reducing the cost of testing.