Brand: YILONG
Materials: Epoxy Resin + Fiberglass
Color: Light Green, Yellow, Black
Thickness: 0.3~300mm
Regular Size: 1030mm*1230mm
Custom Size: 1030mm*2030mm, 1220mm*2440mm, 1030mm*1030mm
Packaging: Pallet, Wooden Box
MOQ: 500KG
Description
FR5 Sheet is a high-TG, high-TD epoxy laminate manufactured under high temperature and high pressure using special electronic-grade fiberglass cloth impregnated with epoxy phenolic resin. It features excellent mechanical strength, stable dielectric performance, and superior insulation properties, along with outstanding heat resistance, moisture resistance, and good machinability.
FR5 sheets are widely used for insulation structural components and PCB testing fixtures in motors and electrical equipment. Thanks to their reliable performance in harsh environments, they are also suitable for applications in humid conditions and transformer oil.
Features
High dielectric strength and excellent electrical insulation
Outstanding thermal resistance for high-temperature applications
Superior mechanical strength and dimensional stability
Flame-retardant and self-extinguishing performance
Good resistance to chemicals, moisture, and solvents
Applications
Electronics & PCB Industry
High-performance PCB substrate for electronic circuits
PCB testing fixtures and support plates
Electrical & Power Industry
Insulating washers, spacers, and bushings for electrical assemblies
Insulation barriers and mounting plates in switchgear
Control panel insulation panels and operator interface plates
Transformer insulation sheets and barrier materials
Motor & Machinery Industry
Insulation for motor and generator windings, coils, and stator components
Insulating structural parts for industrial motors and generators
Industrial Equipment & Automation
Insulating parts for power distribution systems and industrial control units
Electrical insulation components in industrial machinery
Electronics Enclosures & Housing
Electronic enclosures and housings for protection and insulation of modules
Insulating support structures for electronic assemblies
Technical Data Sheet
| FR5 Fiberglass Sheet / EPGC204 Sheet | ||||
| Physical Properties | Standard | Unit | Ref Value | Test Value |
| Density | ISO 1183 | g/cm3 | 1.8-2.0 | 1.8-2.0 |
| Water absorption ( 3mm) | ISO 62 | mg | ≤35 | 30 |
| Mechanical Properties | Standard | Unit | Ref Value | Test Value |
| Flexural strength | ISO 178 | MPa | ≥340 | 540 |
| Elastic modulus of bending test | ISO 178 | MPa | ≥22000 | 25000 |
| Compressive strength perpendicular | ISO 604 | MPa | ≥350 | 560 |
| Impact strength Charpy or Izod | ISO 179/3C | kJ/m2 | ≥50 | 90 |
| Shear strength parallel | VDE 0318/2 | MPa | ≥30 | 55 |
| Tensile strength | ISO 527-4 | MPa | ≥300 | 430 |
| Electrical Properties | Standard | Unit | Ref Value | Test Value |
| Dielectric strength ⊥1mm at 90 °C in oil | IEC 60243-1 | kV/mm | ≥14.2 | 14.5 |
| Breakdown voltage ∥ at 90 °C in oil | IEC 60243-1 | kV | ≥45 | 60 |
| Permittivity 50 Hz | IEC 60250 | - | ≤5.5 | - |
| Permittivity 1 MHz | IEC 60250 | - | ≤5.5 | - |
| Dissipation factor 50 Hz | IEC 60250 | - | ≤0.04 | - |
| Dissipation factor 1 MHz | IEC 60250 | - | ≤0.04 | - |
| Insulation resistance after 24h in water | IEC 60167 | MΩ | ≥50000 | 3x10^7 |
| Comparative tracking index (CTI) | IEC 60112 | V | ≥200 | 210 |
| Thermal Properties | Standard | Unit | Ref Value | Test Value |
| Thermal Endurance | IEC 60216 | T.I. | ≤155 | 155 |
| Flammability | IEC60707 | Class | V-0 | V-0 |
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