Single Sided Flexible PCB or single sided Flex PCB are the most basic type of flexible circuits. They consist of a flexible dielectric film laminated to a single sheet of copper. The copper layer is then chemically etched according to the specified circuit pattern design. Polyimide cover lays can be added to the circuit board for additional insulation and protection, if desired.
Single-Sided Flexible PCB : This design includes a single conductive copper layer that can be bonded between two layers of insulation or built with one polyimide insulating layer and an uncovered side. The interior copper layer then goes through a chemical etching process, producing the circuit design. Single-sided flex PCB board designs support the inclusion of components, connectors, pins and stiffeners.
Single-Sided Flex PCB with Dual Access: Some single-sided flexible PCBs have a dual-access design that allows you to access the conductive material from both sides of the circuit. This design function requires a flexible PCB and specialized layers to create access for the single copper layer through the polyimide layer of the base material.
As a connective device, the primary benefits of flexible circuits compared to traditional cabling and rigid boards include:
Reduced wiring errors
Elimination of mechanical connectors
Unparalleled design flexibility
Higher circuit density
More robust operating temperature range
Stronger signal quality
Improved reliability and impedance control
Size and weight reduction