What is the difference between PCB hard board and FPC soft board?
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PCB rigid board and FPC soft board differences
Rigid PCB: often used as a motherboard, can not be bent.
Rigid: PCB (printed circuit board); flexible board: FPC or FPCB (Flexible Printed Circuit Board); flexible and rigid board: RFPC or RFPCB (Rigid-Flex Printed Circuit Board). Using new type of terminal board. The hard board part has the same thickness and strength as the PCB circuit board, which can install electronic components and withstand certain mechanical forces. Soft board part is usually used to achieve three-dimensional installation. The use of flexible boards allows the entire rigid-flex board to be partially bent.
Flexible board: FPC, also known as flexible circuit board, can be bent.
Flexible printed circuit boards (FPC), also known as flexible circuit boards and flexible circuit boards, are favored for their light weight, thin thickness, and freedom to bend and fold. Relying on manual visual inspection, the cost is high and the efficiency is low. With the rapid development of the electronics industry, circuit board design has become increasingly accurate and dense. Traditional manual inspection methods have been unable to meet production needs, and automatic detection of FPC defects has become an inevitable trend in industrial development.
Number of layers: 2-40
Board thickness: 0.2-7.0mm
Maximum copper thickness: 7oz
Finished product size: 650*1100mm
Minimum line width/spacing: 3/3mil
Maximum board thickness hole diameter ratio: 12:1
Minimum mechanical drill hole diameter: 6mil
Hole to conductor distance: 3.5mil
Impedance tolerance (Ω): ±5%(<50) ±10%(≥50)
Surface treatment process: OSP, chemical gold plating, chemical nickel palladium gold, tin plating, silver plating, lead-free tin spraying, hard gold plating, soft gold plating, gold finger, etc.
Material: FR-4, high TG, halogen-free, high frequency (Rogers, Isola...) CEM, etc.