Table 1: Nominal thickness and tolerance
|
Nominal thickness mm |
Tolerance at single point mm |
|
0.8 |
±0.09 |
|
1.0 |
±0.11 |
|
1.2 |
±0.12 |
|
1.6 |
±0.14 |
|
2.0 |
±0.15 |
|
Note: 1. Normal dimension: 1220±20mm×1020±20mm | |
Table 2: Technical requirements
|
No. |
Item |
Unit |
Conditioning |
Normal Value |
Typical Value |
|
1 |
Solder float at 260℃, min. |
s |
A |
10 |
15 |
|
2 |
Peel strength min. |
N/mm |
A
S-5S/260℃ |
-
1.0 |
1.4
1.2 |
|
3 |
Flexural strength min. |
MPa |
A |
80 |
100 |
|
4 |
Water absorption max. |
% |
E-24/50+D-24/23 |
- |
1.8 |
|
5 |
Dissipation factor max. |
- |
C-96/20/65
C-96/20/65+D-48/50 |
-
- |
0.05
0.10 |
|
6 |
Dielectric constant max. |
- |
C-96/20/65
C-96/20/65+D-48/50 |
-
- |
5.5
6.0 |
|
7 |
Insulation resistance min. |
MΩ |
C-96/20/65
C-96/20/65+D-2/100 |
-
- |
5×104
50 |
|
8 |
Volume resistivity min. |
MΩ·m |
E-2/100
C-96/20/65+C-96/40/90 |
10
100 |
15
180 |
|
9 |
Surface resistance min. |
MΩ |
E-2/100
C-96/20/65+C-96/40/90 |
30
1×103 |
70
1.5×103 |
|
10 |
Thermal resistance |
- |
E-1/180℃ |
- |
No blistering and peeling-off |
|
11 |
Alkali resistance |
- |
5%NaOH, 40℃, 5min |
- |
Without notable
changes in appearance |

