Motor-drive terminals often receive cables, shields or external bars after reflow, so they see both thermal and assembly loads. The drawing must show how those loads enter the PCB instead of assuming the solder pad carries everything.
Separate solder loads from fastening loads
The bottom land provides location and electrical continuity; a threaded or crimp structure should carry assembly force. Larger annular lands, mechanical stops, back-side support or a separate busbar can reduce copper-foil peel risk.
Validate contact after temperature cycling
Measure terminal rise and voltage drop at rated, peak and high-ambient conditions. After cycling, repeat torque, pull and cross-section checks for cracks, finish changes and plastic deformation.
- Define screw, nut, washer and driver settings
- Link reflow profile, paste and land-pattern revisions
- Sample coplanarity, wetting and pull-off force
Include assembly takt and packaging
If terminals are placed automatically, define tape direction, pick-up surface, peel force and moisture packaging. If a robot applies the final torque, provide tool access and anti-rotation features so the prototype can scale to production.