Flex boards with stiffener are formed by a flexible part of polyamide material to which a rigid material of FR4 is attached.
tracks. The impedance is an alternating current (AC) characteristic that increases with frequency and becomes critical for printed circuits operating at frequencies above 200 or 300 Mhz. Impedance calculator software is a good starting point to determine the track width (w) and insulation thickness (h) of a given impedance. In terms
the printed circuit, called serigraphy or silkscreen for short, is done Flexible stiffener with board on the top layer of the PCB and has the role of a reference indicator for the components on the PCB. Graphics and text on a circuit board's PCB are usually printed with a non-conductive permanent epoxy ink. The color
a rigid printed circuit on an 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 printing does not with Flexible board stiffener normally affect the operation of
