Schedule of manufacturing operations

The principle manufacturing operations for a double sided flexible circuit are set out below.

• Cut blanks
• Drill << CNC drill tool
• Plate copper (electroless & and electrolytic copper)
• Laminate and UV print << Photographic tooling
• Develop
• Etch
• Clean
• Attach coverlays << punched coverlays (2 sides)
• Hot Lamination
• Visual inspection << 100% inspection
• Finished treatment (HASL or Au/Ni)
• Legend Print
• Apply stiffener << punched/routed stiffener
• Punch & die profile << punch tool
• Electrical test << test fixture
• Component assembly
• Electrical test of assembly << test fixture
• Visual inspect << 100% inspection
• Pack