PCB design is an important step before PCB production. If not designed well, it will directly affect the performance and quality of the circuit board, causing the entire circuit board to be scrapped; Layout of components is an important aspect of PCB design. So, what are the requirements for PCB design and layout of components?

1. Aesthetics

When designing a PCB, it is not only important to consider the orderly placement of components, but also to consider the graceful and smooth wiring.

2. Force

The circuit board should be able to withstand various external forces and vibrations during installation and operation: it should have a reasonable shape, and the positions of various holes on the board should be arranged reasonably; Generally, the distance between the hole and the board edge should be at least greater than the diameter of the hole; It should also be noted that the weakest section of the plate caused by irregular holes should also have sufficient bending strength.

3. Heating

For high-power and severely heated devices, in addition to ensuring heat dissipation conditions, attention should also be paid to placing them in appropriate positions. Generally, the part with very high power should be made into a separate module and some thermal isolation measures should be taken between it and the signal processing circuit.

4. Signal

Signal interference is the most important factor to consider in PCB design. For example, weak signal circuits are separated or even isolated from strong signal circuits; Separate the AC part from the DC part; Separate the high-frequency part from the low-frequency part; Pay attention to the direction of the signal line; Arrangement of ground wires; Appropriate shielding, filtering, and other measures.

5. Installation

In specific application scenarios, the circuit board can be smoothly installed into the chassis, casing, and slot, avoiding accidents such as spatial interference and short circuits, ensuring smooth operation of the circuit board.