the inner flexibil circuit imprimat copper layers are protected by the adjacent substrate layers. The soldering mask soldermask is made of a fluid substance like an ink and is applied in a thin layer similar to varnish on the entire surface of the printed circuit less on the
In RF and fast switching circuits, the inductance and capacitance of the printed circuit board conductors become significant, circuit flexibil imprimat usually unwanted, circuit elements; rather, they can be used as part of the circuit design, as in distributed element filters, antennas, and fuses, avoiding the need for additional separate components.
are soldered on the same side of the board. A board can use both methods for soldering components. Today PCBs with components mounted only through holes are imprimat flexibil circuit now less common. Surface mount is used for components like transistors, diodes, IC chips, resistors and capacitors. Through-hole mounting can be used