Yellow SMC board

SMC Insulating Sheet

Products are mainly applied in switching components, signage and electrical components of electrical industry, which has excellent electrical properties, flame retardant properties, good mechanical properties.

SMC Insulation sheet Specifications: SMC-A sheet, SMC-B sheet, SMC-C sheet

Temperature rating: 155°C for class F, 130°C for class B;

Color: white, red, gray, other colors;

Thickness: 2-40mm;

Size specifications: 2500x1200mm , 2000x1000mm , 1200x1000mm

SMC sheet processing parts

Processing different specifications of the product according to the requirements of the drawings

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Material and corresponding technical indicators

Serial Number Test Item Unit Technical Index Test Method
SMC-A board SMC-B board SMC-C board
1 Appearance - Smooth surface, no bubbles and cracks Eyeballing
2 Density g/cm3 1.70~190 GB 1033
3 Hydroscopicity % ≤ 0.2 ≤ 0.25 ≤ 0.25 GB 1034
4 Bending Strength Mpa ≥  100 ≥  100 ≥  100 GB 9341
5 Distortion Temperature ° C ≥  220 ≥  200 ≥  200 GB 1634
6 Insulation Resistance(Normalcy) Q ≥ l.OxlO13 ≥ l.OxlO12 - GB 1410
7 Electric strength ( in 90 °C transformer oil) Kv/mm ≥  10.0 ≥ 10.0 - GB 1408
8 Dielectric Dissipation Factor(1MHz ) - ≤ 0.015 - - GB 1409
9 Relative dielectric constant(1MHz ) - ≤ 4.5 - - GB 1409
10 Arc Resistance S ≥  180 ≥  150 - GB 1411
11 Proof tracking index(PTI ) V ≥  600 ≥  600 - GB 4027
12 Combustibility level V-〇 V-l、V-2 - UL94  GB5169
13 Long-term heat-resistance temperature index - 155 130 .- GB 11026

 

Thickness unit:mm SMC-A ;Board withstand voltage: Air pressure resistance KV/lmin

 

Nominal thickness 3 4 5~6 > 6
Voltage resistance ≥  25 ≥  33 ≥  42 ≥  48

 

Thickness unit::mm SMC-B Board withstand voltage: Air pressure resistance KV/lmin

Nominal thickness 3 4 5~6 > 6
Voltage resistance ≥  22 ≥  28 ≥ 35 ≥ 38
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