Rigid-flex PCB

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.

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Category	Item	Technical Index
Base structure	Base material	PI, FR4, PET
	Layer number	1-8layer
	Max size	1420*400mm
	Min size	2.5*2.5mm
	Thickness	PI+FR4: 3 to 125mil
	Adhesive	(Acrylic Adhesive): 1/2mil(12.5um) to 3mil (760um)
	Min Drill diameter	0.05mm
Solder mask	PI PET	Covered in layers PI and PET film
Solder mask	Resist Oil	Solder Mask resist oil thickness:12-18um Color(Green, Black, Yellow, White)
Surface treatment		Immersion gold
		Immersion tin
		Immersion silver
		OSP
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%