FPCS have many applications in a number of different fields. They are used in solar cells, mobile phones, vehicles and aircraft. Many of these applications require thin and durable flexible sheets, which can therefore withstand bending, folding or rolling
Printed circuit boards consist of electrically conductive tracks that interconnect components on the board. They are also commonly used for electrical safety testing or verification
Common causes of material loss in SMT patch processing: 1, human factors, 2, machine factors, 3, material reasons, 4, working methods, 5, production environment
The main reasons for solder joint failure in PCBA processing are as follows: 1, component pin is bad: 2, PCB solder pad is bad: 3, solder quality defects: 4, solder quality defects: 5, process parameter control defects: 6, other auxiliary materials defect
Methods for rapid maintenance of faults after PCBA processing: one, visual inspection method, two, resistance method, three, voltage method, four, waveform method, five, current method, six, component replacement method, seven, step by step investigation
When the solder paste reaches the melting temperature, under the action of balanced surface tension, there will be a self-positioning effect, that is, when there is a small deviation from the component placement position, under the action of surface tensi
Why do PCBA circuit board inspection: PCBA inspection is a link in the whole production process of PCBA processing, is an important means to control product quality
Classification of PCBA inspection items: inspection items are divided into four categories: material inspection, process inspection, identification inspection and quality consistency inspection
PCB copy board use: The purpose of PCB copy board is to learn the latest foreign electronic circuit design technology, and then absorb the excellent design scheme, and then used to develop and design more excellent products
Copper coating on PCB board, if the grounding problem is handled well, is certainly "more advantages than disadvantages", it can reduce the signal line backflow area, reduce the signal external electromagnetic interference
The way to distinguish the circuit board is good or bad: 1, light and color, 2, PCB board size and thickness of the standard rules, 3, PCB board weld appearance
The temperature of PCB board is related to the temperature of its raw materials, solder paste and surface parts. Usually, the highest temperature resistance of PCB board is 300 degrees, 5-10 seconds; Over lead-free wave soldering temperature is about 260,
