Crimping terminal is an important process for wire harness industry. Crimping quality will affect the function and reliality of the wire harness. For our company, we always follow IPC-A-620 standard to crimp terminals. Below is a example for Insulation Support Crimp criteria. We will see there is a strict criteria for the terminal crimping to ensure constant quality.
Target - Class 1,2,3
• Insulation fully enters and extends past the insulation crimp
tabs.
• If multiple wires are used insulation from all wires extend
past the insulation crimp tabs.
• Insulation crimp does not cut or break insulation.
• Insulation crimp tabs fully wrap and support insulation.
• For insulated lugs, the insulation crimp is evenly formed and
contacts the wire insulation providing support without damaging
the insulation (Figure 5-5).
Acceptable - Class 1
Process Indicator - Class 2
Defect - Class 3
• Puncturing of the insulation surface by the insulation crimp
tabs, provided that the tabs do not penetrate down to the
conductor
