What is PD IEC/TR 63017 - Flexible PCBs about?  
PD IEC/TR 63017 discusses standards for flexible printed circuit boards (FPCBs) and specifies the method of compensation of impedance variations. PD IEC/TR 63017 specifies a compensation method of Cu linewidth according to impedance reduction by using noise suppression materials for flexible printed circuit boards.
PD IEC/TR 63017 presents an optimum result for maintaining a designated performance of flexible printed circuit boards by using noise suppression materials.
PD IEC/TR 63017 also indicates a measuring method for an impedance variation of FPCBs using noise suppression materials. with the prevailing time domain reflectometry method. This method is restricted to measuring only the variation of an impedance value in accordance with the variation of the Cu linewidth by using noise suppression materials for FPCBs.
Note: PD IEC/TR 63017 does not determine nor indicates the structure or material of flexible printed circuit boards.
Who is PD IEC/TR 63017 - Flexible PCBs for? 
PD IEC/TR 63017 on flexible printed circuit boards is useful for: 
- Manufacturers of flexible printed circuit boards
- Design engineers
- Mechanical engineers
- The aerospace industry
- IT and telecommunication companies
- The automotive industry
- PCB manufacturing companies
- Quality control personnel
Why should you use PD IEC/TR 63017 – Flexible PCBs?  
FPCBs has a high wire density, is lightweight, has a thin thickness, and has outstanding bending properties. FPCBs using noise suppression materials reduce the effect of electro-magnetic interference. Without appropriate application of noise suppression materials, it may cause poor signal quality on the FPCB due to the impedance variation of Cu circuit lines.
PD IEC/TR 63017 introduces methods to calculate the compensation values of an impedance variation of FPCBs using noise suppression materials. This helps you to control the flow of electricity in a circuit board.
PD IEC/TR 63017 describes test methods to measure the proper impedance value for the test specimen used to obtain the correct data, direct hand contact to the specimen. PD IEC/TR 63017 helps to overcome the problem that FPCBs using noise suppression materials suffer from, i.e., to eliminate an impedance mismatch by means of impedance compensation.
