Generally, a well made PCB board diagram needs to be processed and manufactured by the board manufacturer. After the sample is completed, technicians will weld the components together, and finally assemble them into the shell and package them to form a complete product. So what relevant document parameters and explanations are required for PCB sampling to be provided to the manufacturer? Let me explain them in detail below. What are the relevant document parameters and explanations provided to the manufacturer for PCB sampling requirements

　　1. PCB sampling data: To clarify what kind of manufacturing data is required for PCB, the most common method currently is to use FR4, and the primary data is epoxy resin peeled fiber cloth board.

　　2. Layer: To clarify the number of layers you manufacture for PCB boards. (The manufacturing layers of PCB boards vary, and the price may vary, while the sampling process for PCB circuit boards is completely different.)

　　3. Solder resistance color: There are many colors available, which can also be selected according to company requirements, usually green.

　　4. Screen printing color: The font and border color of the screen printing on the PCB are generally selected as white.

　　5. Copper thickness: The scientific calculation of copper thickness is generally based on the current of PCB circuits. Generally, the thicker the better, but the cost will be higher, so the demand is balanced reasonably.

　　6. Is the through-hole masking solder mask: Oversolder mask insulates the through-hole, otherwise it makes the through-hole uninsulated.

　　7. External coating: including tin spraying, gold plating, and sinking gold.

　　8. Quantity: The quantity of PCBs manufactured should be clearly stated.