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 Shenzhen KingshengPCBA Tech Co.,Ltd (HK C-Alley Co.,Ltd), an professional PCBA manufactuer and electronics manufacturing service (EMS) provider for 12years.SMT factory has ISO9001, ISO14001, TS16949 certification, advanced production equipment and rich experience in the production of PCBA. more

Positioning Holes Requirements for PCBA Assembly Equipment
Positioning Holes Requirements for PCBA Assembly Equipment
The equipment requirements for the positioning holes design are as follows:
While in the PCB design the engineer will reserve positioning holes for printers and placement machines using. Different devices may have different requirements about positioning holes. Generally, a pair of positioning holes are required at both edges of the PCB, and the aperture is 4 mm, which are separatly in the left corner and the right corner. The center position of the positioning holes should be 5mm.
 
For PCBs assembly with SMT & DIP, it is necessary to consider to add a hole which can be adjusted. The hole diameter is 4 mm × 5 mm and it cannot be metallized. For products that need to be tested by In-circuit or FCT equipment, there must also be a pair of positioning holes on the opposite corner of the PCB. The hole diameter and hole spacing requirements must be determined according to the test equipment.