PCB Circuit Board Drawing Requirements

PCB circuit board drawing requirements mainly include the following aspects:

Size and Appearance: The drawings should clearly specify the size, shape and appearance requirements of thePCB board. This includes length, width, thickness, edge chamfer, etc.. In addition, the drawings should also specify the PCB board color, surface treatment and marking requirements.

Component Layout: The drawings should clearly specify the layout of the components on the PCB board, including the location and direction of each component. For special requirements of the components, such as heat-sensitive, need a specific direction of installation, etc., the drawings should be specially described.

Alignment Requirements: The drawings should specify thePCB boardalignment requirements, including the width of the alignment, spacing, corner way. For special requirements of the alignment, such as high-frequency signal lines, power lines, etc., the drawings should be specially described.

Pad and Hole: The drawings should specify thePCBboard pad and hole size, location and connection. For special requirements of the pad or hole, such as the need to connect multiple layers or the need for a specific shape, the drawings should be specially described.

Component Package: Drawings should specify the form of packaging components, including the number of pins, length and diameter. For components with special packages, such as flat packages, round packages, etc., the drawings should be specially described.

Notes and Labels: Drawings should contain the necessary notes and labels to help understand the circuit principle and the relationship between the components. Notes and labeling should be clear, accurate and concise.

Accuracy Requirements: Drawings should specify the required accuracy requirements to ensure that the PCB board manufacturing accuracy. This includes dimensional accuracy, shape accuracy, component layout accuracy and so on.

Material Requirements: The drawings should specify the materials used for the PCB board, including the base material, insulation layer, protective layer, etc.. For materials with special requirements, such as fireproofing, high temperature resistance, etc., the drawings should be specially described.

Test Requirements: Drawings should specify the test requirements of the PCB board, including test methods, test equipment and test conditions. This helps to ensure the performance and quality of the PCB board.

Acceptance Criteria:Drawings should specify the acceptance criteria for PCB boards, including size, appearance, electrical performance and other requirements. This helps to ensure that the manufactured PCB board meets the design requirements.

In short, when drawing PCB circuit board drawings, you need to fully consider the size, appearance, component layout, alignment requirements, pads and holes, component packaging, notes and labels, accuracy requirements, material requirements, testing requirements and acceptance criteria and other aspects of the requirements to ensure that manufactured PCB boards comply with the design requirements and have high reliability and stability.