Insulation Epoxy Fiber Glass Laminated Sheet FR4

NO

TEST ITEMS

UNIT

TEST RESULT

TEST METHOD

1

Bending Strength Perpendicular to Laminations

MPa

571

GB/T 1303.4-2009

2

Compressive Strength Perpendicular to Laminations compressive

MPa

548

3

Parallel Layer Impact Strength

(Simply Supported Beam, Gap)

KJ/m²

57.3

4

Tensile Strength

MPa

282

5

Vertical Layer Breakdown Voltage (90℃ + 2℃, 25# transformer oil, 20s step by step boost, φ25mm/φ75mm cylinder electrode system)

kV/mm

16.7

6

Parallel Layer Breakdown Voltage (90℃ + 2℃, 25# transformer oil, 20s step by step boost, φ130mm/φ130mm flat plate electrode system)

kV

＞100

7

Relative Permittivity (50HZ)

-

5.40

8

Dielectric Dissipation Factor (50HZ)

7.2*10^-3

9

Insulation Resistance after Soaking

Ω

2.2*10¹³

10

Density

g/cm³

2.01

11

Water Absorption

mg

5.3

12

Barcol Hardness

-

76

GB/T 3854-2005

13

Flammability

Grade

V-0

GB/T 2408-2008

REMARK:

1. NO.2 the sample height is (5.00~5.04) mm;

2. NO.5 the sample thickness is (2.02~2.06) mm;

3. NO.6 the sample size is (100.50~100.52)mm*(25.10~25.15)mm*(5.02~5.06)mm thickness, The electrode spacing is (25.10~25.15)mm;

4. NO.11 the sample size is (49.86~49.90)mm*(49.60~49.63)mm*(2.53~2.65)mm;

5. NO.13 the sample size is (13.04~13.22)mm*(3.04~3.12)mm thickness.