Axial Sequencer – The axial sequencer machine takes axial leaded through-hole components from reels and creates a tape chain of components in order of insertion for use on the axial insertion machine.
Component Lead Hole Guidelines
PCBs should be punched or drilled for component lead insertion to the following recommended hole diameters for optimum performance:
Hole Diameter = Lead Diameter + 0.48 mm (0.019 in.) ± 0.08 mm (0.003 in.)
Hole sizes:
• Less than recommended – Might result in reduced insertion reliability
• Greater than recommended – Might result in loose components in the PCB
Holes used for board error correction should be 1.0 mm (0.040 in.) ± 0.5 mm (0.020 in.). Plated holes or translucent PCBs might affect performance