The PCB layout and wiring can be adjusted to prevent ESD Static electricity from the human body, the environment and even inside electronic equipment can cause various damage to the precision semiconductor chip.
It is characterized by surface mounting of components and reflow welding technology. It has become a new generation of assembly technology for electronic products manufacturing.
In the semiconductor electronics industry, if you want to become a qualified electronic, in addition to understanding the basic knowledge, but also know the key points of circuit protection device selection.
Manual welding is a very practical skill, after understanding the general method, to practice more; More practice, can have better welding quality.
Fanyi has a series of features such as independent PCB online ordering, CRM management system, online self-quotation, self-ordering, online payment, online query of production schedule, express tracking and so on. Fanyi PCB proofing is a possible choice!
At present, there are too many circuit board factories and they are very miscellaneous. Electronic manufacturers to choose a wide range, and it is difficult to choose the right manufacturers.
prepare the component library of schematic SCH and the component library of PCB. Component library can use protel (many electronic veteran birds have protel at that time
The circuit board inside the line is mainly pure copper, that is, bare copper plate. Some people think that the gold color is copper, which is the protective layer on the copper.
It is essential to use high dielectric strength materials that can resist higher voltages before breakdown.
The purpose of the surface treatment is to ensure good solderability or electrical properties. Since copper tends to exist in the air as an oxide and is unlikely to remain as raw copper for long periods of time, other treatments of copper are required.
The quality of PCB directly affects the quality of the whole electronic products, PCB testing is a timely detection of problems, but also a necessary means to prevent more defective products to reduce losses.
PCB inspection contents: ① appearance inspection: ② size measurement: ③ furnace temperature test: ④ pad welding force test: ⑤ Check the PCB board factory report
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