Every time the cat goes to the toilet, the litter box should measure the weight of the cat, the weight of the cat's excrement, the duration of the cat's going to the toilet, and record the time point of going to the toilet (the time point of entering the
PCBA three anti paint coating methods: 1, impregnation, 2, spraying, 3, brush coating, 4, selective coating
the printed circuit board has entered the stage of surface installation and chip installation, and the process requirements are increasing, so the warping requirements of the circuit board are becoming higher and higher. Therefore, we have to find out the
For the fabrication of circuit boards, the more layers, the more complex the process, the higher the failure rate of course, the higher the cost, so the multilayer board can only be used for advanced circuits.
Although the decoupling capacitor can be placed near the through-hole, it is rendered useless at high frequencies due to the lead and through-hole inductance. Such routing will increase the area of signal ring and reduce the current radiation unfavorably.
The use of direct paving mode is characterized by a strong overcurrent capacity of the pad, for high-power circuit device pins must be used in this way. At the same time, its thermal conductivity is also very strong, although the work is good for the heat
Like this kind of treatment method for those engaged in small household appliances PCB Layout friends are not unfamiliar, so if the amount of tin is uniform enough and the amount of tin is enough, this 1mm wire can be seen as more than a 2mm wire.
PCB fabrication is one of the most important steps for PCBA processing plant to complete the task quickly and accurately, including: the process design of the board, tooling design and production, the production of the circuit board
pcb board and aluminum base board are designed in accordance with the requirements of pcb board. At present, aluminum base pcb board in the market is generally single-sided aluminum base board, pcb board is a large type, aluminum base board is only a type
What matters should be paid attention to in the process of PCBA proofing: first, material selection, second, process design, third, PCBA proofing audit, fourth, BOM list, fifth, PCBA proofing test
The PCB is then placed into the developer to remove unwanted solder masks so that the specified copper foil can be correctly exposed.
Specifications for PCB storage and inspection in SMT factories: 1. PCB inspection standards and inspection contents; 2. Storage requirements; 3
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