HDI board proofing is the early stage of mass production. Only when the proofreading is accurate, can mass production be put into mass production. Then, it is very important to provide accurate proofreading documents. Does everyone know what documents need to be provided? And what issues should be paid attention to in the provided documents? Today, the editor will share with you:

  First, you need to provide a PCB or GERBER file for HDI board proofing. The document should include plate making instructions, including specific requirements for the number of layers, materials, pad technology, ink color, etc. Let us learn more about the main parameters.

  Material: In order to explain the materials required to produce PCB, FR4 is the most commonly used at present, and the main material is fiber cloth board with epoxy resin peeling off.

  Number of layers: It is necessary to specify the number of layers of the PCB board. (The number of layers of the PCB board is different, the price will be different, and the proofing process of the PCB circuit board is the same)

  Solder mask color: There are many colors, you can also choose according to requirements, generally green.

  Silkscreen color: The color of the silkscreen font and frame printed on the HDI board proofing PCB is usually white.

  Copper thickness: Generally, the copper thickness is scientifically calculated based on the current of the PCB circuit. Generally, the thicker the better, but the cost will be higher, so a reasonable balance is required.

  Whether the through hole is covered by solder resist: The solder resist layer should insulate the through hole, otherwise the through hole is not insulated.

  Surface coating: spray tin and gold plating.

  Quantity: The quantity of PCB produced should be clearly stated.