FR4 Fiberglass Board for New Energy Insulation Applications
Dongguan Chaorong Electronics · Professional Insulation Materials
FR4 (Flame Retardant 4) fiberglass laminate is the most widely used insulation material in power electronics and electrical equipment. This article covers the key properties and applications of FR4 boards in new energy insulation.
FR4 Properties Overview
| Property | FR4 Standard | FR4 High-Tg |
|---|---|---|
| Glass transition temp (Tg) | 130-140°C | 170-180°C |
| Dielectric strength | > 20 kV/mm | > 20 kV/mm |
| Water absorption | < 0.1% | < 0.05% |
| Flexural strength | > 300 MPa | > 350 MPa |
New Energy Applications
EV Charging Stations
FR4 insulation boards are used for high-voltage component mounting and circuit isolation in DC fast charging stations.
Solar Inverter Insulation
FR4 provides reliable insulation for solar inverter circuits, supporting high voltage isolation requirements in photovoltaic systems.
Battery Management Systems (BMS)
FR4 sheets serve as battery module insulation barriers, BMS PCB substrates, and high-voltage connector insulation in energy storage systems.
Chaorong Electronics supplies FR4 fiberglass boards in various thicknesses (0.8mm-3.2mm) for new energy insulation applications. Standard sizes ship within 3-5 working days.