How to connect the hook terminals with wire? IPC-620-A have clear spec for this kind of terminal connection. Please refer to below.
Target - Class 1,2,3
• Wire wrap contacts terminal for a minimum of 180°.
• Minimum of one wire diameter space from end of hook to
the closest wire.
• Wires attached within the 180° arc of the hook.
• Wires do not overlap.
• Insulation clearance one wire diameter.
Acceptable - Class 1,2,3
• Wire contacts and wraps terminal at least 180°.
• No overlap of wire turns.
• Minimum of one wire diameter space from end of hook to
the closest wire.
Acceptable - Class 1
Process Indicator - Class 2
Defect - Class 3
• Wire is wrapped less than one wire diameter from end of
hook.
• Wire wrap is less than 180°.
• Wire is attached outside the arc of the hook and is less than
two lead diameters or 1.0 mm [0.039 in] whichever is
greater from the base of the terminal.
Defect - Class 1,2,3
• Wire end violates minimum electrical clearance to noncommon
conductor.
