The idea of flexible-rigid PCB is introduced into structure design of circuit board for aerospace products. Integrating four rigid boards with three flexible boards realizes high reliable connect of interface and infinitely saves inner space of the sensor and convenient for miniazation of sensor. The design of four-layered rigid boards and double-layered flexible board implements that small circuit board can include multichannel of signal.Through vibration test

acceleration test

shock test

thermal cycle test

It is proved that the high reliability flexiblerigid PCB can be applied to military products such as aerospace.