PCBA test fixtures (also known as "test stand") play a crucial role in the PCBA manufacturing process. They are primarily used to test PCBA boards after SMT soldering and DIP component insertion to ensure that the products meet specification requirements.

The working principle of PCBA test fixtures is straightforward: they utilize metal probes to connect to the solder pads or test points on the PCB board. When power is applied to the PCB board, typical values such as voltage and current are measured at test points to determine the functionality of the test circuits. The fabrication of PCBA test fixtures is typically customized based on the dimensions of the PCB board, the locations of the test points, and the specific testing requirements. These fixtures are commonly made from materials such as acrylic, wood, or plastic, and are equipped with metal probes, display screens, wires, and other accessories.

The production of PCBA test fixtures requires supporting documentation. PCBA factories typically need to provide Gerber files for the PCB board, material requirements, and technical specifications for the test fixtures. In cases where there is no sample board available, fabrication can still proceed based solely on the Gerber files. Test fixture manufacturers use the provided file data to ensure precise fabrication that matches the actual PCB boards.

PCBA test fixtures offer benefits such as high testing accuracy, ease of operation, and the ability to conduct batch testing. They are effective in reducing production costs and improving production efficiency.