Cara Menyalin PCB

Apa itu salinan PCB

Copy PCB merujuk kepada penyelidikan teknologi terbalik pada 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.

Ketiga, cat dengan lembut dua lapisan TOP LAYER dan BOT LAYER dengan kertas kasa air, gilap filem tembaga agar bersinar, dan masukkan ke dalam pengimbas. Mulakan perisian FOTO, imbas dua lapisan berwarna dan simpan. Catatan: PCB mesti diletakkan secara mendatar dan lurus ketika diletakkan di dalam pengimbas.

Keempat, sesuaikan ukuran, kontras, dan kecerahan kanvas untuk menjadikan bahagian dengan filem tembaga dan bahagian tanpa filem tembaga mempunyai kontras yang kuat. Kemudian ubah sub-gambar menjadi hitam putih, periksa sama ada garisannya jelas, dan jika tidak jelas, ulangi langkah ini. Sekiranya jelas, simpan gambar sebagai fail format BMP hitam putih TOP.BMP dan BOT.BMP.

Kelima, dua fail format BMP diubah menjadi fail format PROTEL, dan dipindahkan menjadi dua lapisan dalam PROTEL. Sekiranya kedudukan PAD dan VIA setelah dua lapisan pada dasarnya bertepatan, ini menunjukkan bahawa beberapa langkah pertama dilakukan dengan baik. Sekiranya terdapat penyimpangan, ulangi langkah ketiga dan keempat.

Keenam, tukar TOP.BMP ke TOP.PCB. Catatan: Untuk ditukar ke lapisan SI, ia adalah lapisan kuning. Kemudian jejak garis pada lapisan TOP. Dan letakkan peranti mengikut gambar langkah kedua. Padamkan lapisan SILK setelah melukis.

Ketujuh, tukar BOT.BMP ke BOT.PCB. Catatan: Untuk menukar ke lapisan SILK, ia adalah lapisan kuning muda. Kemudian anda mengesan garis pada lapisan BOT. Padamkan lapisan SILK setelah melukis.

Eighth, in PROTEL, add TOP, PCB, BOT, and PCB into a single picture and it will be OK.

Ninth, the same process of copying boards in the middle layer is the same, repeat steps 6-7. The final output PCB file is the same PCB picture with multiple layers combined.

Tenth, compare the original picture with the 1:1 file after copying the PCB. If yes, you are done.

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) .