With the deverlopment of the rigid PCB and flex PCB, rigid-flex PCB appeared. It combined the advantge of the FR4 PCB and flexiable PCBs, brought more space for the engineers.
As its name implies, rigid-flex PCB is procuded by pressing flexible circuit board and rigid circuit board, according to the requirements of the relevant process, formed a circuit board with FPC characteristics and PCB characteristics.
Rigid-flex PCB can be used in many areas such as mobile, car, medical care, military.
|Base structure||Base material||PI, FR4, PET|
|Thickness||PI+FR4: 3 to 125mil|
|Adhesive||(Acrylic Adhesive): 1/2mil(12.5um) to|
|Min Drill diameter||0.05mm|
|Solder mask||PI PET||Covered in layers PI and PET film|
|Resist Oil||Solder Mask resist oil |
thickness:12-18um Color(Green, Black, Yellow, White)
|Surface treatment||Immersion gold|
|Tracks and holes||Min stiffener Holes||>0.2mm|
|Min track width before compensation(mil)||1.5mil, tolerance +/-15%|
|Min track space before compensation(mil)||1.5mil, tolerance +/-15%|
|Others||Impedance control tolerance||(impedance tolerance):+/-10%|
Rigid flex PCB