Differences between FR4 and FR5 epoxy plates

Firstly, FR-4 flame retardant epoxy resin fiberglass laminate sheet material is a kind of code of fire resistant m...

Firstly, FR-4 flame retardant epoxy resin fiberglass laminate sheet material is a kind of code of fire resistant material grade, represented by the resin material must be able to put out after combustion state. It is not a material name, but a level of material. So the general FR4 materials used in the circuit board have a lot of kinds, but most are based on the so-called four functions (Tera – Function) of epoxy resin, filler and glass fiber made of composite materials.

According to different uses, the industries of FR4 flame retardant epoxy resin fiberglass laminate sheet are generally called: FR4 epoxy glass cloth, insulation board, epoxy board, epoxy resin board, brominated epoxy resin board, FR4, glass fiber, glass fiber board, FR4 reinforcement plate, FPC reinforcement plate, flexible circuit board reinforcement plate, FR4 flame retardant epoxy resin board, laminated board, FR4 epoxy plate, epoxy glass cloth board, epoxy glass cloth laminated sheet and PCB drilling pad.

Main technical features and application of FR4 sheet: electrical insulation, good stability and flatness, smooth surface, no pits, thickness tolerance standard, suitable for application in high performance electronic insulation requirements of products, such as FPC reinforcement plate, PCB drilling pad, fiberglass meson, potentiometer carbon film printing glass fiber board, precision tour stars gear grinding (chip), precision test plate, electrical equipment insulation stay clapboard, insulating plate, transformer insulation board, motor insulation parts, grinding gear and electronic switch insulation board, etc.

FR5 epoxy sheet has better advantages than FR4 epoxy sheet:

1. TG and TD are higher;

2. Better heat resistance, about twice of ordinary FR4 sheet;

3. Z-CTE is smaller and suitable for high multilayer boards;

4. T288 is better.

FR5 epoxy plate is a laminated plate made of special electronic cloth soaked in epoxy phenolic resin and other materials under high temperature and high pressure. It has high mechanical properties and dielectric properties, good insulation properties, heat resistance and moisture resistance, and good machinability. Application: it can be used as insulation structure parts in motor and electrical equipment, also widely used in PCB testing; It can be used in humid conditions and transformer oil.