![Single & Double Flexible Circuits](https://www.northpointech.com/wp-content/uploads/2016/10/double-sided-FPC-3-e1446137622758.jpg)
These flexible circuits have the base layer (polyimide) and a single copper conductor. Fabrication specs can be modified or tailored to your requirements. Single-sided flexible circuits maintain a small profile and great conformity so they are excellent for installations in very small spaces. If you want to optimize your space, a single-sided flexible circuit could be your answer.
Double Sided Flex
Double-sided flexible circuits have a different structure, making them more rigid and for use in applications where a single-sided flexible circuits design does not provide the necessary circuit density and layout. The double-sided flexible circuit features the base layer as a core between two adhered copper conductors.
Both of these circuits can be constructed to your specs with various materials and finishes.
![double-sided-fpc-3-e1446137622758](https://www.northpointech.com/wp-content/uploads/2016/10/double-sided-FPC-3-e1446137622758.jpg)
![single_fpc](https://www.northpointech.com/wp-content/uploads/2016/10/single_FPC.jpg)
![single-sided-fpc-5](https://www.northpointech.com/wp-content/uploads/2016/10/single-sided-FPC-5.jpg)
![single-sided-fpc-e1446143773841](https://www.northpointech.com/wp-content/uploads/2016/10/Single-sided-FPC-e1446143773841.jpg)
Item | Parameter | |
Numberof Layers | 1-6 | |
Minimum Circuit Width | .12″ | |
Minimum Circuit Clearence | .12″ | |
Minimum Anular Ring | .003″ | |
Minimum Hole | .009″ | |
Minumum Copper Thickness | 18µm | |
Maximum Copper Thicknes | 70µm | |
Substrate Thickness | Polyimide | 12.5µm-50µm |
Maximum Board Size | 20″ x 31″ | |
Hole Tolerance | NPTH | +/- .002″ |
PTH | +/- .003″ | |
Circuit/Gap | Inner | .003″-.004″ |
Outside | .003″-.005″ | |
Outline Tolerance | +/-.003 | |
Surface Finish | Immersion Gold | |
Immersion Silver | ||
Tin Plating | ||
OSP |