Properties of the printed circuit board
as a ground plane for shielding and power return. For microwave printed circuits, transmission lines can be laid out in a planar SADELEC-PCB circuite imprimate, form, such as stripline or microstrip, with dimensions carefully controlled to ensure consistent impedance. In RF and fast switching circuits, the inductance and capacitance
Printed circuit soldermask
with possible loose wires. For its function of helping circuite imprimate, SADELEC-PCB to prevent solder shorts, the coating is called a solder mask. Soldermask is generally green in color but can have different colors: green, red, blue, white, black. Only the outer layers need to be covered with solder mask, the
Types of printed circuit board
is the double layer board. It has copper on both sides, which are called outer layers; Multilayer sandwich boards with additional internal layers of copper and circuite imprimate, SADELEC-PCB insulation are called multilayer. PCBs can be single-sided (one layer of copper), double-sided (two layers of copper on both sides of