At present, no matter what kind of etching fluid is used, high pressure spray must be used, and in order to obtain a cleaner line side and high quality etching effect, the nozzle structure and spray mode must be strictly selected.
In order to understand PCB, it is necessary to understand the production process of usually single-sided, double-sided printed circuit board and ordinary multilayer board, in order to deepen the understanding of it.
That is, on the copper foil part of the outer layer of the board to be retained, that is, on the graphic part of the circuit, a layer of lead tin corrosion resistance layer is pre-plated, and then the rest of the copper foil is etched away by chemical mea
These components cannot be inserted or attached to the holes and surface pads of the circuit board and can even damage automatic cassette loaders. Welded circuit board components, bending components, feet neatly cut.
One example is the difference between blind and buried holes in circuit boards. Here is all the information about what blind and buried hole technologies are in PCBS.
PCB board warping occurs when the stress on the board is not uniform or when the resistance to stress is not uniform in each area of the board.
In the process of transmission, if the characteristic impedance of the transmission path changes, the signal will reflect at the node where the impedance is discontinuous.
he price of PCB is something that many buyers are always confused about, and many people will also question how these prices are calculated when placing an online order. Let's talk about the components of PCB price together.
Emc and associated EMI have historically required the eyes of system design engineers, but today board designs and component packages are shrinking and Oems are demanding faster systems.
Circuit is used as a tool for conduction between originals. In the design, large copper surface will be designed as the grounding and power layer. The lines and drawings are made at the same time.
hese wires, called wires or wiring, are used to provide circuit connections between the components on the board. Usually the color of PCB board is brown or green, which is the color of solder resistance paint.
When PCBA virtual welding occurs, we can solve the PCBA virtual welding from the following points: 1) judging the general fault range according to the fault phenomenon, 2) observing the appearance, focusing on the large components and components with larg
Telegram
