Fr-4 material

FR-4 is a flame retardant material level code, represent the meaning of the resin material undergoes combustion state must be able to extinguish a material specification, it is not a material name, but a material level, so the current general circuit boards used in FR-4 grade materials have a lot of types, but most are based on a so-called four-function (Tera-Function) of an epoxy resin with filler (Filler) and glass fibers made ​​of composite materials. FR4 substrate portion, the most widely used family on a printed circuit board substrate is a glass fiber epoxy laminate. FR4 substrate is a standard part of most of the material has a higher number (such as some portion of FR4 substrate FR4 substrate 06, 08) has a higher temperature coefficient and a low dielectric constant. Part FR4 substrate with a starting Tg 140 ° C, Tg FR4 substrate 06 parts of 170 degrees, and when you move up the family, the temperature increases.

FR-4 epoxy glass cloth laminated sheet, depending on the use of different industries generally known: FR-4 Epoxy Glass Cloth, insulation board, epoxy boards, epoxy boards, brominated epoxy boards, FR-4 , glass fiber, glass fiber board, FR-4 reinforcement plate, FPC reinforcement plate, flexible circuit board reinforcement plate, FR-4 epoxy board, fire-retardant insulation board, FR-4 laminates, epoxy board , FR-4 light board, FR-4 fiberglass board, epoxy glass cloth laminated sheet, epoxy glass cloth laminated board, circuit board drilling pad. Main technical characteristics and applications: electrical insulation [1] stable, good flatness, smooth surface, no pits, the thickness tolerance standard, suitable for high-performance electrical insulation requirements for products, such as Flexible pcb reinforcement plate, PCB drilling plate, glass rings, glass fiber carbon printed potentiometer, precision planetary gear (wafer grinding), precision test plates, electrical (electrical) equipment insulation stays partitions, insulation plate, transformer insulation boards, electrical insulation , grinding gears, electronic switches insulation panels.

Epoxy fiberglass cloth boards, the most widely used product model for FR-4, the electronic product installation techniques and PCB technology development needs, and the emergence of high Tg FR-4 product.