Cách sao chép PCB

Sao chép PCB là gì

Copy PCB đề cập đến nghiên cứu công nghệ đảo ngược trên PCB board, also called cloning. In a narrow sense, copying only refers to the process of extracting and restoring PCB files of electronic product circuit boards and using files for circuit board cloning. Broadly speaking, copying includes not only the extraction of circuit board files, circuit board cloning, circuit board Imitation and other technical processes. Also includes the modification of circuit board files (ie, board modification). Extraction of three-dimensional data and model imitation of electronic product shape molds (ie copying). Various electronic components on electronic product circuit boards All technical processes such as imitation, decrypting the encrypted chip or single chip on the circuit board, and disassembling the system software of the electronic product, etc.

So, can PCB be copied? Does the copied effect work?

PCB can indeed be copied, and the effect is similar to the circuit board being copied. The reason for this is that the current copy PCB manufacturers can copy the same board according to the circuit board. Although it does not achieve 100% efficiency, at least 70% or 80% still exists. For customers, such a circuit board is sufficient for its use. Therefore, PCB replication is very popular in the current industry development, and it is also very popular with many electronic enterprise bosses. However, not all manufacturers can reproduce high-quality PCB boards with quality and quantity, and it is necessary to select manufacturers that meet the following conditions. Kingford is a professional copying PCB manufacturer.

The whole process of copy PCB

First, get a PCB, first record the model, parameters, and position of all vital parts on the paper, especially the direction of the diode, three tubes, and the direction of the IC gap <. It is best to use a scanner to scan two photos of the location of vitality parts, which will greatly help to restore the prototype in the future.

Second, remove all devices and remove the tin in the PAD hole. Rinse the empty PCB board with ultrasonic waves, and then put it into the scanner. Note that the PCB must be placed horizontally and straight in the scanner, otherwise the scanned image cannot be used. Then open the Photoshop software to enter the scanner, scanner After startup, the resolution of the scanning DPI can be set according to the density, if the setting is 600DPI. Scan the screen printing surface in color, and save the name to customize it. The bottom screen printing method is the same.

Thirdly, lightly polish the two layers of TOP LAYER and BOT LAYER with water-gauze paper, polish the copper film to shine, and put it into the scanner. Start the PHOTOS software, scan the two layers in color and save them. Note: The PCB must be placed horizontally and straight when placed in the scanner.

Fourth, adjust the size, contrast, and brightness of the canvas to make the part with copper film and the part without copper film have strong contrast. Then turn the sub-picture into black and white, check whether the lines are clear, and if it is not clear, repeat this step. If it is clear, save the picture as black and white BMP format files TOP.BMP and BOT.BMP.

Thứ năm, hai tệp định dạng BMP được chuyển đổi thành tệp định dạng PROTEL và được chuyển thành hai lớp trong PROTEL. Nếu vị trí của PAD và VIA sau hai lớp về cơ bản là trùng khớp, điều đó cho thấy rằng một số bước đầu tiên được thực hiện tốt. Nếu có sai lệch, hãy lặp lại bước thứ ba và thứ tư.

Thứ sáu, chuyển đổi TOP.BMP thành TOP.PCB. Lưu ý: Để được chuyển đổi sang lớp SI, nó là lớp màu vàng. Sau đó, theo dõi dòng trên lớp TOP. Và đặt thiết bị theo bản vẽ bước thứ hai. Xóa lớp SILK sau khi sơn.

Thứ bảy, chuyển đổi BOT.BMP thành BOT.PCB. Lưu ý: Để chuyển đổi sang lớp LỤA, nó là lớp màu vàng nhạt. Sau đó, bạn vạch đường trên lớp BOT. Xóa lớp SILK sau khi sơn.

Thứ tám, trong PROTEL, thêm TOP, PCB, BOT và PCB vào một hình duy nhất và nó sẽ ổn.

Thứ chín, quy trình sao chép bảng ở lớp giữa cũng vậy, lặp lại bước 6-7. Tệp PCB đầu ra cuối cùng là cùng một bức tranh PCB với nhiều lớp được kết hợp.

Thứ mười, so sánh hình ảnh gốc với tệp 1: 1 sau khi sao chép PCB. Nếu có, bạn đã hoàn tất.

Remarks: If it is a multi-layer PCB, you must carefully polish the inner layer. And repeat the third to fifth steps of copying the board. Of course, the naming of the graphics is also different, according to the number of layers. General double-sided copy The board is much simpler than the multi-layer board. The multi-layer board copy is prone to misalignment, so the multi-layer board copy board should be particularly careful and careful (the internal vias and non-vias are prone to problems) .