which makes the direction of high frequency, high power and miniaturization. High signal power, high current and high voltage put forward higher requirements for PCB surface copper degree and hole copper thickness.
PCBA welding processing, usually PCB board has a lot of requirements, and must meet the requirements of the board to accept welding processing.
the polymer resin containing phosphorus nitrogen compounds will produce non-combustible gas when it is burned. This gas can isolate the surface and air of the resin combustion
In a circuit with resistance, inductance, and capacitance, an obstacle to alternating current is called an impedance. Impedance is usually denoted by Z, which is a complex number.
Series inductors should not be used as secondary sensors, so they must be physically isolated from nearby movable conductive materials, or a shielded SMD inductor must be used.
printing material dry too fast, in the screen version dry plugging hole, printing speed is too fast, scraper strength is too high. Solution, should use volatile organic solvent slow printing material, with soft cloth stained with organic solvent gently cl
ad is a very important concept, PCB engineers must be familiar with it. although familiar, many engineers on the pad knowledge is only a little. The types and design standards of pad in PCB design will be introduced in detail below.
At this stage, we move from written blueprints to physical representations constructed using laminate or ceramic materials. Some of the more complex applications require flexible PCBS when particularly compact Spaces are required.
In the consultation of many customers, questions about PCB assembling board proofing are often asked. Of course, there are a lot of new customers for PCBA plate proofing is not very understanding.
In PCB proofing, how to reduce or eliminate the deformation caused by different material characteristics or processing has become one of the most complicated problems faced by PCB manufacturers.
PCB copy board, the industry is also often referred to as board copy board, board clone, board copy, PCB clone, PCB reverse design or PCB reverse research and development.
refers to the product under the specified conditions and within the specified time, the ability to complete the specified function. For the end product, the higher the reliability, the higher the use guarantee.
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