The design drawing of the PCB schematic diagram should be neat, clear characters, thick and subdivided, and easy to read. The schematic diagram must be drawn in accordance with national standards.
The layout is uniform. Plan the location of various graphic symbols in advance, and summarize the size of the graphic symbols. The principle drawing of the main PCB manufacturer is above the drawing, and the printed circuit board drawing is placed below the drawing (or another page), so that the entire drawing is laid out. Even and coordinated. Otherwise, in addition to the difficulty of looking at pictures, errors may also occur.
The pcb manufacturer shall mark the position symbol of the component on the left or above of each symbol on the drawing. The position symbol of each component is composed of text symbols (letters) and footnote serial numbers (numbers). Each type of components should be marked with their position sequence number from top to bottom according to their position in the figure, from left to right, such as Ri, R2, R3.., C,, C2, C3… If there is a product composed of several units, its sequence number can be compiled according to the unit, such as 3Rh 3Ci, etc.
For the convenience of reading the diagram, the code and basic data of each component of the PCB manufacturer can be directly written on the diagram, or a component list is attached, which details the number, code, name, model and quantity of each component, etc. When filling in the component list, classify the components and fill in the sequence numbers of similar components from top to bottom. After writing one type of component, leave a row and write another type of component. When assembling the components, the components should be installed and soldered in strict accordance with the components listed in the detailed list. The series components are best drawn on a straight line, and the centers of the symbols of the components are aligned when connected in parallel.
XPCB Limited is a manufacturer specializing in the production of high-precision double-sided, multi-layer and impedance, blind buried vias, and thick copper circuit boards. The products cover HDI, thick copper, backplanes, rigid-flex combined, buried capacitance and buried resistance, Golden Finger and other kinds of circuit boards, which can meet the needs of customers for all kinds of products.
XPCB Limited is a premium PCB & PCBA manufacturer based in China.
We specialize in multilayer flexible circuits, rigid-flex PCB, HDI PCB, and Rogers PCB.
Quick-turn PCB prototyping is our specialty. Demanding project is our advantage.
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