Category: Plated Through Hole
Description: The Visual Inspection process is used for Plated Through Hole (PTH) PCBAs to validate the minimum requirements for the PCBA. Unlike User Inputs –- PCBA SMT Hand Solder
which occurs before reflow soldering, Visual Inspection takes place after soldering operations have been completed.
Major Cost Drivers -- PCBA Visual Inspection
The process time for SMT Visual Inspection is the sum the time required to perform the visual inspection of the PCB prior to reflow and the transport time of the PCB along the In-Line Workstation. The visual inspection time is currently set as a machine variable of 30 seconds. This may be altered, but is a good average time for the inspection of an average PCB prior to insertion in reflow oven.
Process Time = Visual Inspection Time + Transport Time
- Visual Inspection time = (Machine variable)
- Transport Time = Visual Inspection Conveyor Length/
- Visual Inspection Conveyor Speed
- Visual Inspection Conveyor Length = (Machine variable)
- Visual Inspection Conveyor Speed = (Machine variable)
User Inputs –- PCBA Visual Inspection
N/A.