3oz RED electrolytic High ductility copper foil
There are various types of copper foil are offered; in a range of
weights (thicknesses). Their characteristics differ, and an
understanding of these differences is important to ensure the
correct selection of copper foil for each application or
Width: 1380 mm
Length: 500-5000 M
Internal diameter: 76 mm and152 mm
Electrodeposited copper crystals tend to grow lengthwise in the
Z-axis of the foil. Typically, a polished section of
electrodeposited copper foil has the appearance of a picket fence,
with long crystal boundaries perpendicular to
the foil plane. Rolled copper crystals are broken and crushed
during the cold rolling operation. They are smaller
than the electrodeposited crystals, and have irregular, spherical
shapes, nearly parallel to the foil plane.
In an electrodeposited copper manufacturing process, the copper
foil is deposited on a titanium rotating drum from a copper
solution where it is connected to a DC voltage source. The cathode
is attached to the drum and the anode is submerged in the copper
electrolyte solution. When an electric field is applied, copper is
deposited on the drum as it rotates at a very slow pace. The copper
surface on the drum side is smooth while the opposite side is
rough. The slower the drum speed, the thicker the copper gets and
vice versa. The copper is attracted and accumulated on the cathode
surface of the titanium drum. The
matte and drum side of the copper foil go through different
treatment cycles so that the copper could be suitable for PCB
fabrication. The treatments enhance adhesion between the copper and
dielectric interlayer during copper clad lamination process.
Another advantage of the treatments is to act as anti-tarnish
agents by slowing down oxidation of copper.
1. Polyimide board
2. Epoxy board
Difference between CA copper foil and ED copper foil
Q1. How to save after the box opened?
Keep the dry environment,and is better use it in 30days.
Q2. Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery.
Q3. what is your standard width?
A: 1380mm,we accept customization for the width. we can cut it into
any size that you demand after pass discussing.
Typical properties of high ductility copper foil
|Nominal thickness||/||12um||1/2 OZ||3/4 OZ|
|Foil Profile||Shiny side (Ra)||սm||≤0.4||≤0.4||≤0.4||≤0.4||≤0.4||≤0.4|
3. Standard Width,1380(±1)mm,May according to the customer request
We test the peel strength with FR-4(Tg140) prepreg ,please
reconfirm with your pp.