Ultrasonic welding is a common process on wire harness manufacturing, what is the ultrasonic welding spec for the insulation clearance in IPC-A-620?
Target - Class 1,2,3
• End of Insulation is between one and two wire diameters
from weld nugget.
Defect - Class 1,2,3
• Insulation is embedded in weld nugget.
• Insulation gap is so large that it causes the conductor to
violate minimum electrical spacing.
Defect - Class 2,3
• End of insulation is less than one wire diameter or more than
two wire diameters from weld nugget.
