
Drilling and Holes
Design Recommendation
It is recommended that the finished hole diameter be the specified pin or lead diameter plus 0.2 mm.
Finished Hole Sizes drill blow up
Drilling Capabilities
Minimum drilled hole size on 1.55 material (before plating): 0.25 mm
Minimum plated through holes (1.55 mm material & less): 0,15 mm finished diameter.
Finished Hole Size Inspection tolerances
The above table applies unless otherwise stated by the customer specifications
Board thickness to hole aspect ratios
Hole Location and Photo Tool Registration Tolerances
Remaining external annular ring after manufacture will be to IPC-A-600
Plating Voids and Hole Imperfections
As per IPC-A-600
Acceptable Visual Imperfections
As per IPC-A-600
Distance Between Holes and from Hole to Edge
Land (Pad) size