HDI board proofing: what documents are needed?
HDI board proofing is the early stage of mass production. Only when the proofreading is accurate can the batch production be put into mass production. Then, it is very important to provide accurate proofreading documents. Does everyone know what files need to be provided? And what problems 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, rubber pad technology, ink color, etc., let us understand some main parameter descriptions in detail.
Material: In order to illustrate the materials required to produce PCB, the most commonly used is FR4, and the main material is epoxy resin peeling fiber cloth board.
Number of layers: It is necessary to explain 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 board is the same)
Solder mask color: There are many colors, and you can choose according to requirements, generally green.
Silk screen color: The color of the silk screen font and border 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: Tin spray and gold plating.
Quantity: The number of PCBs produced shall be clearly stated.
Proofing of HDI board
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