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1, FR-4 is a code number of the flame-resistant material, which means that the resin material must be able to extinguish the material specification, which is not a material name, but a material level, therefore The FR-4 grade material used in the general circuit board has a lot of type, but most of them are composite made by the so-called four-function epoxy resin plus filler and fiberglass. Material.
2, FR-4 epoxy glass cloth laminate, depending on the use of the use, the industry is generally referred to as: FR-4 EPOXY GLASS CLOTH, insulating plate, epoxy plate, epoxy resin plate, brominated epoxy floor, fr -4, glass fiberboard, glass fiber, FR-4 reinforcement plate, FPC reinforcement plate, flexible circuit board reinforcing plate, FR-4 epoxy resin plate, flame retardant insulating plate, FR-4 laminate, ring Oxygen plate, FR-4 light sheet, FR-4 glass fiber board, epoxy glass cloth plate, epoxy glass cloth laminate, circuit board drilling pad. Main technical features and application: electrically insulating performance is stable, good flatness, smooth surface, no pit, thickness tolerance standard, suitable for high-performance electronic insulation requirements, such as FPC reinforcement plate, PCB drilling pad, glass Diliary, potentiometer carbon film printed glass fiberboard, precision tourite gear (wafer grinding), precision test plate, electrical (electrical) equipment insulated strut partition, insulating pad, transformer insulating plate, motor insulator, grinding gear, Electronic switch insulating board, etc.
3, FR-4 epoxy glass cloth laminate surface color is:
Yellow FR-4, White FR-4, Black FR-4, Blue FR-4, etc.
FR-4 is the substrate used by the PCB, which is a category of the sheet. The sheets are different from the enhanced materials, mainly classified as the following four:
a) FR-4: glass cloth substrate
b) FR-1, FR-2, etc.: paper substrate
c) CEM series: composite substrate
d) Special material substrate (ceramics, metal base, etc.) FR-4 is immersed by a special electroncloid with a plate-like laminate that is hot and high in hot and high pressure.
4, high mechanical properties and dielectric properties, better heat resistance and moisture resistance and have good machiningability.
Conditions and transformers.
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