Properties

Units

Epoxy glass cloth laminated sheets

Epoxy/Glass cloth
paper core laminated sheets

F880

F881

F882

F883

F884

F885

F886

F887

Flexural strength perpendicular to lamination　≥

MPa

340

340

340
170
E-1/150

340
170
E-1/150

340

340

175
（2.4mm)

175
（2.4mm)

Notch impact strength parallel to lamination charpy 　 ≥

KJ/m2

33

33

33

33

33

33

—

—

Dielectric strength perpendicular to lamination（in oil 90±2℃）≥

MV/m

14.2

14.2

14.2

14.2

—

—

—

—

Breakdown voltage parallel to lamination
（in oil 90±2℃） ≥

KV

35

35

35

35

—

—

35

35

Relative dielectric coefficient 　≤

—

5.5

5.5

5.5

5.5

—

—

—

—

Loss factor ≤

—

0.04

0.04

0.04

0.04

—

—

—

—

Insulation resistance after impregnated in water 　　≥

Ω

1×10⁸

1×10⁸

1×10⁸

1×10⁸

1×10^3-6
A

1×10^6-9
A

—

—

Water absorption
1mm 　 ≤

mg

18

18

18

18

18

18

0.5%
(0.8mm)

0.5%
(0.8mm)

Flammability

—

—

FV0

—

FV0

—

—

—

FV0

Colour

—

Llight green

Natural

Black

Natural

Reference standard

—

Enterprise

Characteristics & applications

1.F880：Suitable for mechanical ,electrical ,electronic usual applictions,
　 　       withhigh strength under moderate temperature and good electrical
　 　       properties under high temperature, F880 is similar to NEMA's G-10
　 　       grade.
2. F881: Similar to F880, with flame retardent properties. Similar to
　 　 　NEMA's FR-4 grade.
4. F882: Similar to F880, with better heatresistance properties than F880,
　 　 　similar to NEMA's G-11 grade .
5. F883: Similar to F880, with flame retardent properties. Similar to
　 　      NEMA's FR-4 grade.
6. F884: Similar to 3240 , with semiconductor sheets.
7. F885: Similar to 3240, electrical static dissipative sheets.
8. F886, F887: Epoxy/Glass cloth paper core laminated sheets ,Similar toCEM-1.