Single Layer Flexible PCB Production Record #FPC-20260715-045

This order comprised 100 units of single-sided flexible printed circuit boards built on 0.07 mm polyimide with 1/2 oz rolled copper. The compact 9.6 x 9.6 mm boards incorporated standard 6/6 mil geometry and 0.3 mm minimum hole sizes. An immersion gold ENIG finish was selected to provide stable surface conductivity without soldermask or silkscreen layers, and no stiffener was required.

Production began with thorough engineering review and specialized polyimide material handling to protect the ultra-thin base. Circuit imaging and etching created the precise conductor pattern, followed by coverlay lamination for insulation. We then performed electroless nickel deposition and immersion gold deposition to achieve the ENIG surface. Dynamic flex testing played a key role in validating the design's endurance under repeated flexing, supplemented by full electrical testing.

The batch achieved uniform results throughout, with the complete manufacturing cycle spanning 6.3 days. These steps ensured each flexible PCB delivered the expected mechanical and electrical reliability for integration into space-constrained devices.