Each one has a different function.
Parts pcb circuit board.
Components are generally soldered onto the pcb to both electrically connect and mechanically fasten them to it.
These components can consist of a wide range of electronic parts.
A printed circuit board pcb mechanically supports and electrically connects electrical or electronic components using conductive tracks pads and other features etched from one or more sheet layers of copper laminated onto and or between sheet layers of a non conductive substrate.
A qfn package functionality is to connect both physically and electrically silicon dies the asic to a printed circuit board pcb using surface mount technology.
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A printed circuit board pcb mechanically supports and electrically connects electronic components or electrical components using conductive tracks pads and other features etched from one or more sheet layers of copper laminated onto and or between sheet layers of a non conductive substrate.
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Circuit board parts are very important in a complete circuit board manufacturing process.
Some common pcb components include.
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Qfn is a lead frame based package which is also called csp chip scale package with.