People who are engaged in hardware want to understand and learn how to draw PCB board, the following share how to draw PCB board, generally draw the whole drawing PCB process is generally first draw a schematic, and then generate a network table from the schematic, and then import PCB.

With the PCB size requirements getting smaller and smaller, the device density requirements are getting higher and higher, and the difficulty is gradually increasing. How to reduce design time while maintaining quality? Engineers need to have strong technical knowledge, as well as master some design skills.

The name of the circuit board is: ceramic circuit board, alumina ceramic circuit board, aluminum nitride ceramic circuit board, circuit board, PCB board, aluminum substrate, high frequency board, thick copper plate, impedance board, PCB, ultra-thin circuit board, ultra-thin circuit board, printed (copper etching technology) circuit board.

How the PCB factory audit customer data is the most concerned problem of MI engineers, then how to audit customer data? The customer's board making data is divided into two parts, one is the customer's Gerber data, and the other is the customer's board making instructions.

Every designer needs to use CAD tools for component placement, but even command line-based CAD software can be used to precisely place components.

The heat dissipation hole is the method of using the channel through the PCB board (through the hole) to conduct heat to the back to dissipate heat. The heat dissipation hole should be configured directly below or as close as possible to the heating body.

According to different application scenarios, different layers of the board are used, but because the layers in the PCB are closely combined, it is generally not easy to see the actual number, but if you carefully observe the board fault, it can still be distinguished.

In the manufacturing process of HDI circuit board, there are many defects and difficulties in the process, the most important of which is that the blind hole can not be traced, and the blind hole can not be transferred to form a line.

The difference between PCB countersunk hole and countersunk hole is that the upper part of the bolt hole is reamed: the countersunk hole is a straight barrel structure; The countersunk hole is of 45 degree construction, which is smoother than the countersunk hole.

PCB assembly methods are mainly V-CUT, bridge, bridge stamp hole these ways, the size of the assembly can not be too large, can not be too small, generally small board can be assembled processing or convenient welding and assembly.

From the point of view of patch welding, several points need to pay attention to PCB design, according to experience, if not in accordance with these requirements, it is likely to cause poor welding quality, virtual welding and even damage the pad or circuit board when repairing the PCB.

Why to add the process edge (working edge), its purpose is to set aside the track transmission position, place the Mosaic Mark and positioning hole during SMT. The edge of the process is generally 5-10mm wide. In order to save a little pcb cost, it is not advisable to cancel the process edge or set the process edge to 3mm (not recommended).

PCB proofing recently received frequent feedback from customers to dig wrong holes, shape cut large or small, after understanding the document design of large circle wrapped small circle (large hole wrapped small hole), two contour lines.

As a hardware /PCB/SI engineer, a basic daily operation, from plate selection, PP selection, copper foil selection, and then the allocation of thickness, I believe experienced fans of the design of the lamination have got seven, eight, eight.

Do the membrane panel before first out of the film, look at the film switch panel, there are several colors, do that color first, a kind of a list on paper, such as the panel of the electric vehicle charging station in the above picture, there are 9 colors, you can clearly see that there are positioning holes, boundary lines, alignment lines and cutting lines.

Ultrasonic screen cleaning device membrane panel design drawing, film design drawing, knife mold design drawing, hardware mold design drawing, after the completion of several drawings, we undertake most of the film panel design work has been decomposed and completed.