
Main Category:
Generally, copper foil is a foil form of copper less than the thickness of 70µm and there are a rolled copper foil and an electrolytic copper foil. Normally, a rolled copper foil is made by rolling and annealing electrolytic copper continuously and there is a restriction of the length. In contrast, an electrolytic copper foil has no restriction of the length because it is manufactured under the process which is shown below. Especially, together with world's top share is obtained for lithium-ion batteries, they are used for flexible printed distributing boards, so their stable performance have been winning approval.
Q1: if provide sample fee?
A1: size A4 is free, roll sample not free.
Q2. If test all goods before delivery?
A2: Yes, we also can provide TDS.
Q3. what is your standard width?
A3: 1280mm and 1380mm
Classification | Unit | Requirement | Test Method | |||||
Foil Designation | / | H | M | 1 | IPC-4562A | |||
Nominal thickness | / | 1/2 OZ | 3/4 OZ | 1 OZ | IPC-4562A | |||
Area Weight | g/㎡ | 150±5 | 228±8 | 285±10 | IPC-TM-650 2.2.12.2 | |||
Purity | % | ≥99.8 | IPC-TM-650 2.3.15 | |||||
Foil Profile | Shiny side (Ra) | սm | ≤0.4 | ≤0.4 | ≤0.4 | IPC-TM-650 2.3.17 | ||
Matte side(Rz) | um | ≤8 | ≤10 | ≤12 | ||||
Tensile Strength | R.T.(23℃) | Mpa | ≥220 | ≥235 | ≥280 | IPC-TM-650 2.3.18 | ||
Elongation | R.T.(23℃) | % | ≥2 | ≥3 | ≥3 | IPC-TM-650 2.3.18 | ||
Peel Strength(FR-4) | CEM-1 | N/mm | ≥1.5 | ≥1.7 | ≥2.0 | IPC-TM-650 2.4.8 | ||
PTC | ≥0.5 | ≥0.6 | ≥0.8 | |||||
Pinholes&porosity | Number | No | IPC-TM-650 2.1.2 | |||||
Anti-oxidization | R.T.(23℃) | day | 180 or customize | / | ||||
H.T.(200℃) | Minutes | 60 or customize | / |
JIMA Copper
Jima Copper is a professional supplier of high-precision copper and copper alloy series of foil roll brand. Jima provided 4-800μm thick copper foil, Maximum width 1580 mm, Jima copper foil production capacity is sufficient, with complete varieties, excellent quality.
Jima specializes in the research, development, promotion and application of new technology of rolling copper foil, and it is equipped with a research center of rolling copper foil engineering technology. Jima copper can stably provide various specifications of high-precision flat foil (hard foil, soft foil, semi-hard foil, etc.) and surface treatment foil (red dumb copper foil, black dumb copper foil, high corrosion resistance rolled copper foil, etc.). The products are widely used in electromagnetic shielding, heat dissipation, graphene conductive film production, aerospace, flexible copper plate, lithium battery, 5G communications, LED, intelligent vehicles, drones, wearable electronics and other fields, which is highly recognized and praised by customers. And it is exported to Korea, Japan, Germany, the United States, Russia, India and other countries.