Verified Company
Ningbo Leadwin International Trade Co., Ltd.
Click to enlarge
1.Description: Glass epoxy fr4 sheet are electrical alkali-free glass woven fabric base impregnated epoxy resin binder by processing under pressure and heat, which have extremely high mechanical strength, good dielectric properties, good electric strength properties and fine heat and humidity resistance. In addition, It has anti-fire property.
accordance with the following international standards:
IEC60893 EPGC202/NEMA LI-1:FR4/DIN 7735 HGW 2372.1/BS 3953 EP-4
2.Specifications:
1).Thickness:0.2-150mm
2).Size: 1020x1220mm, 1220x2440mm,1020x2040mm ;
3).Temperature grade:B glass(130°C).
3.Color: yellow, green,red, back, lighe green
4. Applications:
With high mechanical strength, Insulation, heat resistance, electrical properties and good moisture resistance properties. Widely range of applications, for example: Suitable for using as insulating structural parts in electric equipment, such as electric generators, motors, switch board, pcb , etc.
| No. | Projects | Unit | FR4 Result | |
| 1 | Flexural strength perpendicular to lamination | A | Mpa | 494 |
| B | 473 | |||
| 2 | Impact strength parallel to laminations (Charpy) | A | KJ/m2 | 66.7 |
| B | 45.3 | |||
| 3 | laminations (Charpy) Dielectric strength perpendicular to laminations (in 90±2°C transformer oil,1mm in thickness) | MV/m | 10.7 | |
| 4 | Breakdown voltage parallel to laminations (in 90±2°C transformer oil) | KV | 54.6 | |
| 5 | Insulation resistance after impregnated in water | A | Ω | 1.5*1013 |
| B | 1.7*1013 | |||
| 6 | Dissipation factor | / | 3.3*10-2 | |
| 7 | Dielectric constant (1MHz) | / | 5.14 | |
| 8 | Water absorption | mg | 6.5 | |
| 9 | Combustibility | class | HB | |
| 10 | Adhesive strength | N | 5221 | |