Controlled impedances of printed circuits
at high frequencies, great care must be taken in designing the tracks to match the Stencil impedance of the upstream and downstream components. The longer the route or the higher the frequency, the better adaptation is required. When producing the printed circuit with controlled impedance, the impedance will
Types of printed circuit board
technology a flexible printed circuit made of a thin polyamide of 0.1-0.3 mm with a rigid printed circuit on an Stencil FR4 substrate. These printed circuits are used more and more lately, having the advantage of their flexibility. A PCB may have an inscription or screen printing that identifies components, test points or identification text. Screen
Printed circuit board assembly
circuit assembly" (with components). Components are generally soldered to the PCB both to connect them electrically and to fix them mechanically. Printed circuit boards are used in almost all electronic products and Stencil some electrical products. Currently, the production and assembly of printed circuits are automated. Electronic computer aided design software is available to do much