In the technical requirements for the development of the pcb manufacturer singapore board, you must specify:
- Type of board (OPP, DPP). board size requirements. Board dimensions and the possibility of resizing. If the shape of the board is specific, then a drawing or sketch must be attached. Specify restricted areas for wiring.
- The presence of mounting holes and holes for mounting, indicating their coordinates and diameters (or shown on the sketch).
- Placement and fastening of connectors (coordinates and diameters of mounting holes, markings and diameters of holes for legs).
- If necessary, the features of the placement of elements. Placement conditions for other and specific elements, if any (buttons, indicators, resonators, …).
- The minimum dimensions of the power and ground buses, and the presence of screening areas. The width of the remaining tracks.
- If there are specific and non-standard elements, then attach drawings or sketches to them with dimensions, pin diameters, and pinout of the legs, marking the installation on the board.
- Electrical circuit diagram and list of elements.
- Name, board number, logos and other desired texts on the board.
Basic requirements for printed wiring:
- Before assembly and soldering, printed circuit boards must be subjected to quality control.
- Before installing radioelements on printed circuit boards, the preservative coating is removed.
- When preparing printed circuit boards for mounting, it is necessary to ensure good solderability of radio elements.
- After tinning, the printed circuit board is washed from flux residues.
- On single-sided boards, the elements are located on one side, opposite the location of the printed conductors.
- Only one element of lead can be placed in each mounting hole.
- Installation of elements on printed circuit boards is recommended to start with smaller ones.
- All elements must fit snugly with their housings to the printed circuit board.
- Soldering time should not exceed 3 seconds.
- To avoid overheating, a heat sink is used.
