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

—

light green

natural

black

natural

Reference standard

—

 Enterprise's Standards

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、Epoxy/Glass cloth paper core laminated sheets ,Similar to CEM-1F887：