Item

Unit

Index

Appearance

-

Transparent and gold film,no fold ,no pinhole

Thickness

μm

25

50

75

100

125

150

175

Tolerance

μm

±3.0

±5.0

±7.5

±10

±12.5

±15

±17.5

Width

mm

10～1000

10～940

Tensile strength

Mpa

≥140

≥120

Elongation at break

%

≥40

60

Dielectric strength

MV/m

≥150

120

Surface resistivity

Ω

≥1.0×10¹³

Volume Resistivity

Ω.cm

≥1.0×10¹⁰

Dielectric constant

-

3.5±0.4

Dielectric dissipation factor 48～62Hz

-

≤3.6×10^-3

Thermal stability

℃

≥180