DATA SHEET OF COPPER FOIL ------------------------------------------------------------------------------------
Items
Units
STD Type
HTE Type
Thickness (µm)
12
18
35
70
12
18
35
70
Thickness by weight
g/m2
107
153
305
610
107
153
305
610
Purity
%
min. 99.8
Tensile Strength
@ 25 Degree Celsius
kg/mm2
>21
>21
>28
>28
>21
>21
>28
>28
@ 180 Degree Celsius
-
-
-
-
>10
>12
>14
>14
Elongation
@ 25 Degree Celsius
%
>2
>2
>3
>3
>2
>2
>3
>3
@ 180 Degree Celsius
-
-
-
-
>2
>2
>3
>3
Peel Strength
as received and 20 sec.after soldering
kg/cm
>1.00
>1.10
>1.40
>1.96
>1.00
>1.10
>1.40
>1.96
lbs/in
>5.59
>6.15
>7.82
>10.95
>5.59
>6.15
>7.82
>10.95
Surface Roughness
Shiny side (Ra)
(µm)
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
Matte side (Rz)
10
10
17
17
10
10
17
17
Solderability
@ 260 Degree Celsius 4 sec.
Good
Good
Good
Good
Good
Good
Good
Good
Note :
1. All foil conforms to specifications of IPC-4562
2. Please refer to IPC-4562 and IPC-TM-650 for test methods.
3. Peel strength test is performed on epoxy-based prepregs
