FFC bending test - tolerances
In general the extremely flexible FFC cable are divided into different categories. Cables – from the static version (type K) to the highly flexible version with silicone (type E) – are manufactured for various applications.
The flexibility depends on the thickness of the polyester foil and/or the thickness of the conductor material.
For example a FFC cable, 40-pin, pitch 0.50 mm, length 200 mm has been tested as to its flexibility as follows:
- Bending radius: 5 mm
- U-shaped bending with distance of 10 mm
- Cycle distance: 40 mm
- Conductor thickness: 8x65x0.50x0.035x0.32xP7
Result: the cable is still applicable without any modification after 3.139.800 bending cycles.