January 19, 2021 12:30 PM EST
FR4 is a glass epoxy laminate, most commonly used in PCB (printed
circuit board). It is used in various flexible printed circuit boards
and other semi-rigid variants. It shows excellent high strength and
flame retardancy. Easy to integrate applications and allow component
installation make it the preferred material for most PCBs.To get more
news about
fr4 board, you can visit pcbmake official website.
Fiberglass board is impregnated with epoxy resin. These sheets are
used to build the FR4. Eight of these reinforcements are covered with
copper foil. The entire structure is then placed in a press and then
bonded to a FR-4 sheet.
The glass in the FR-4 plate makes it very strong. Unless otherwise
specified, the epoxy resin used is usually flame retardant. Bromine is
used to impart flame retardancy to epoxy resins. This makes the whole
PCB flame retardant. This is critical in most applications associated
with high temperatures.
The copper used helps designers and manufacturers to etch patterns
onto PCB. These etched patterns form the basic circuits that connect the
various components. It also connects the interconnector to the basic
circuit. The interconnector is used to connect the layers of a PCB.
Dicyandiamide, also known as “dice”, is the most commonly used
material to harden epoxy resins. The maximum allowable temperature is
300 ℃. If a phenolic material is used to cure epoxy resin, it is called
“non succinic acid”. Its maximum temperature tolerance is 350 ℃.
The FR-4 can be used for single or multi-layer PCB of surface mount
components. From a manufacturing point of view, the FR-4 is easy to use.
Therefore, it provides designers with great flexibility to take
advantage of the inherent characteristics of materials, thus bringing
benefits to applications and processes.
