Mitsubishi original pcb board sewing machine A247B11B

CIRCUIT BOARD DETAILS

1) Printed circuit boards, also known as printed circuit boards, is a provider of electrical connections for electronic components
2) According to the number of circuit board layers, it can be divided into single panel, double panel, four-layer board, six-layer board and other multilayer circuit boards.
3) The future development trend of printed circuit board manufacturing technology is to develop in the direction of high density, high precision, fine aperture, fine wire, small pitch, high reliability, multi-layer, high-speed transmission, lightweight and thin.

Circuit design
The design of the printed circuit board mainly refers to the layout design, which requires various factors such as the layout of internal electronic components, metal wiring, through holes and external connections, electromagnetic protection, heat dissipation, crosstalk, and so on. Excellent circuit design can save production costs and achieve good circuit performance and heat dissipation performance. Circuit design generally also needs to be implemented with the aid of computer-aided design (CAD), and well-known design software includes OrCAD, Pads (aka PowerPCB), Altium designer (aka Protel), FreePCB, CAM350.

component
1) Pattern: The line is used as a tool for the conduction between the originals. In design, a large copper surface will be designed as the ground and power layer. The lines and drawings are made at the same time.
2) Dielectric: used to maintain the insulation between the circuit and the layers, commonly known as the substrate.
3) Through hole: The through hole can make more than two layers of lines communicate with each other. The larger through hole is used as a component plug-in.
4) Legend / Marking / Silk screen: The main function is to mark the name and location frame of each part on the circuit board, which is convenient for maintenance and identification after assembly.
5) Surface Finish, the protection methods are HASL, ENIG, Immersion Silver, Immersion Tin, OSP.