PV Ribbon
PV Ribbon

PV Ribbon is a critical interconnection material in solar photovoltaic modules, designed to collect and conduct the electricity generated by solar cells with maximum efficiency. Tamra produces Oxygen-Free Copper (OFC) based PV Ribbon using an integrated process from copper cathode to final coating, ensuring exceptional conductivity, solderability, and durability. With our advanced rolling and coating technology, Tamra supplies PV ribbons engineered for high-output, long-life solar modules

Applications
Interconnection of solar cells (tabbing wire)
Bus bar connections in crystalline and thin-film solar modules
High-efficiency multi-busbar (MBB) cells (4–6 busbar solutions)
Solar panels requiring soft ribbons for fragile thin wafers
Types & Sizes
  • Thickness: 0.080 – 0.500 mm ± 0.007
  • Width: 0.300 – 6.000 mm ± 0.08
  • Coatings:
    • Lead-Free: Sn100; SnAgCu 96.5/3.0/0.5 (RoHS Compliant)
    • Leaded: SnPbAg 62/36/2; SnPb 63/37; SnPb 60/40
    • Low Temperature: SnBiAg 60/38/2
  • Coating Thickness: 4 – 50 μm ± 3 μm each side
Specification
  • Base Material: Cu-OF1 CW007A (EN 13602)
  • Resistivity: ≤ 1.72 × 10⁻⁸ Ωm
  • Yield Strengths (Rp0.2): <140 / <90 / <70 / <50 (grades available)
  • Elongation at fracture: >25%
  • Camber: <6 mm/m
Key Features
  • High conductivity with OFC base
  • Straighter material → improved module output
  • Softer grades → suitable for thin wafers & new stringing technologies
  • Uniform tin/solder/ tin-lead-silver coating for superior solderability
  • Manufactured with plasma coating technology for precise mechanical properties
  • All quality tests as per SEMI PV19-0811, DIN, EN, ISO, ASTM standards
Product Range
  • Tabbing Ribbon
  • Busbar Ribbon
  • Super Soft Ribbon (<60 MPa) for thin wafer modules

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