Properties

Unit

Epoxy glass cloth laminated sheets

Epoxy/Glass cloth
paper core laminated
sheets

ZMC831

ZMC880(G10)

ZMC881(FR4)

ZMC882 (G11)

ZMC883 (FR5)

ZMC884 (3240)

ZMC885 (3240)

ZMC886

ZMC887  (CEM1)

Flexural strength perpendicular to lamination　 　 　 ≥

MPa

 300

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

7.8

14.2

14.2

14.2

14.2

—

—

—

—

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

KV

20

35

(45)

35

(45)

35

(45)

35

(45)

—

—

35

(45)

35

(45)

Relative dielectric coefficient 　 　≤

—

   8

5.5

5.5

5.5

5.5

—

—

—

—

Loss factor 　 　≤

—

0.03

0.04

0.04

0.04

0.04

—

—

—

—

Insulation resistance after impregnated in water 　　 　 　 ≥

Ω

 1X10⁷

1×10⁸

1×10⁸

1×10⁸

1×10⁸

1×10^3-6
A

1×10^6-9
A

—

—

Water absorption
1mm 　 　 　 　　≤

mg

2.7%

(1.6mm)

18

18

18

18

18

18

0.5%
(0.8mm)

0.5%
(0.8mm)

Flammability

—

FV0

—

FV0

—

FV0

—

—

—

FV0

colour

—

Natural

light green

natural

black

natural

 reference standards

 industrial standards 

Characteristics & applications 

 1.ZMC880：Suitable for mechanical ,electrical ,electronic usual applications, with high strength under moderate temperature and good electrical properties under high temperature, ZMC880 is similar to NEMA's G-10 grade.
2. ZMC881：Similar to ZMC880, with flame restardent properties. Similar to NEMA's FR-4 grade.
4. ZMC882：Similar to F880, with better heat resistance properties than F880, similar to NEMA's G-11 grade .
5. ZMC883：Similar to F880, with flame retardent properties. Similar to NEMA's FR-5 grade.
6. ZMC884：Similar to 3240 , with semiconductor sheets.
7. ZMC885： Similar to 3240, electrical static dissipative sheets.
8. ZMC886、ZMC887：Epoxy/Glass cloth paper core laminated sheets ,Similar to CEM-1.