What is Draw
Draw means fabrication drawing, also known as a fab drawing. This drawing serves as a crucial document that provides detailed information necessary for the manufacturing of a printed circuit board (PCB). It acts as a communication tool between the designer and the manufacturer, conveying important specifications such as hole locations, sizes, and tolerances, board dimensions, and notes on materials and methods to be used.
The fab drawing plays a vital role in ensuring the accuracy and quality of the PCB. It provides additional information that may not be included in other forms of communication, such as Gerber files. By including details like the board outline, layer stack-up, and drill chart, the fab drawing ensures that the manufacturer has all the necessary information to fabricate the PCB correctly.
One important aspect of the fab drawing is its reference to the board edge and at least one hole location. This reference point allows for proper alignment with the NC Drill file, ensuring that the drilled holes are accurately positioned. Additionally, the fab drawing may also include symbols and annotations to indicate the drilled holes and link them to the drill chart.
Frequently Asked Questions
What Are Gerber Files Used For
Gerber files are essential in the field of printed circuit board layout as they contain precise information regarding the shape and location of each element. Typically, each layer of the PCB layout data is stored in a separate Gerber file. This allows for the creation of stencils for various stages of the fabrication and assembly process.
What Is the Difference Between Gerber and CAD File
CAD files are more extensive compared to Gerber files. They can include additional valuable information that is not present in Gerber files, such as electrical data, silkscreen color schemes, drilling information that is compatible with various machines, and material specifications.