When assembling circuit boards, both single-sided and double-sided PCBs with SMD components, conventionally wired components (THT) and/or mixed assembly are possible without any problems.

In order to guarantee a high series quality (SMD), we assume assembly with fully automatic assembly machines.

New production processes and technologies as well as the processing of new housing moulds are introduced on our own products. This ensures for our customers that we have gained the necessary experience for error-free production and that you receive functioning assemblies right from the start.

In the following, we have compiled some information for you to ensure a smooth production process. These are to be understood as suggestions and may vary depending on customer requirements.

Fitting

As described for the printed circuit board, certain general conditions for the placement of components on the printed circuit board should be observed in order to enable high-quality and therefore error-free assembly.

In the case of double-sided assembly, it is important to ensure that the "heavy" components are placed on one side of the PCB in order to avoid additional costs, for example for the required adhesives or other rework.

The CAD data for placing the components to be assembled (pick and place) with the following information is desirable for data creation on our pick and place machines:

  • Unit of measurement used (mm, inch, etc.)
  • The origin point (ZERO) of the coordinates refers to the bottom right-hand corner of the PCB. If this deviates from your data, we need the offset to this point
  • Dimensions of the PCB
  • In the case of a multiple panel, we require a description of the structure and dimensions
  • X/Y coordinates of the reference marks
  • For each component to be assembled:
    • X/Y coordinate (centre point)
    • Assignment to the parts list (DIN designation: C1, IC2, R34, L5, D34, etc.) with component designation, value and housing.
    • Labelling if a component in the data is not to be assembled.
    • Designation of whether it is an SMD or THT component.
    • Rotation to the zero axis in degrees anti-clockwise
    • Designation on which side the component is assembled

In principle, this work can also be carried out manually, with the parts list and the assembly plans virtually on foot. However, this should be avoided for quality and cost reasons.

Parts list

To enable fast and error-free preparation of your parts list, you should provide it to us as a table (Excel, OpenOffice) or as a CSV (Comma-Separated-Values) text file. The list should contain at least the following information for each component:

  • Sequence number of the component in the list
  • Quantity/number
  • Component designation and housing
  • Manufacturer and manufacturer designation
  • Assignment to the assembly plans (DIN designation: C1, IC2, R34, L5, D34, etc.)
  • Designation of whether it is an SMD or THT component
  • Farnell, RS or DigiKey number (optional or for prototypes)