Product Introduction
In the sophisticated architecture of solar panel manufacturing, if solar cells represent the "heart" of a module, then soldering ribbons form the vital "vascular system" that transports generated energy throughout the panel. Our premium photovoltaic soldering ribbons and specialized flux solutions from Ooitech create the most fundamental and extensive electrical network within solar modules, ensuring optimal power transmission and long-term reliability.
Our comprehensive soldering material portfolio includes high-purity oxygen-free copper ribbons with precision tin coating, available in both interconnecting (tabbing wire) and busbar configurations. Paired with our advanced no-clean flux formulations, these materials enable manufacturers to achieve perfect metallurgical bonds that withstand decades of thermal cycling and environmental stress. Whether you're producing traditional modules or implementing cutting-edge Multi-Busbar (MBB) technology, our solutions ensure minimal series resistance and maximum power output.
Technical Specifications
Interconnecting Ribbon (Tabbing Wire) Specifications
| Parameter | Specification | Unit |
|---|
| Width Range | 0.8 - 2.0 | mm |
| Thickness Range | 0.08 - 0.20 | mm |
| Copper Purity | ≥99.99% | - |
| Oxygen Content | <10 | ppm |
| Tin Coating Thickness | 10 - 25 | μm |
| Elongation | ≥25 | % |
| Tensile Strength | 200 - 250 | MPa |
| Electrical Resistivity | ≤0.0175 | Ω·mm²/m |
| Solder Alloy Options | Sn60Pb40, Sn63Pb37, Lead-free | - |
Busbar Ribbon Specifications
| Parameter | Specification | Unit |
|---|
| Width Range | 4.0 - 6.0 | mm |
| Thickness Range | 0.20 - 0.35 | mm |
| Copper Purity | ≥99.99% | - |
| Tin Coating Uniformity | ±2 | μm |
| Current Carrying Capacity | Up to 15 | A |
| Yield Strength | 60 - 120 | MPa |
| Coating Adhesion | No peeling at 180° bend | - |
No-Clean Flux Specifications
| Parameter | Specification | Unit |
|---|
| Solid Content | 15 - 25 | % |
| pH Value | 7.0 - 8.5 | - |
| Activity Level | ROL0/ROL1 | IPC J-STD |
| Halide Content | <0.05 | % |
| Working Temperature | 180 - 250 | °C |
| Residue Corrosivity | Non-corrosive | - |
| Insulation Resistance | >10¹¹ | Ω |
| Shelf Life | 12 | months |
Technical Advantages
Superior Material Properties
Ultra-High Purity Copper Core: Our oxygen-free copper achieves >99.99% purity with oxygen content below 10ppm, ensuring the lowest possible electrical resistance and optimal conductivity throughout the module's lifetime
Precision Coating Technology: Uniform tin coating with ±2μm tolerance guarantees consistent soldering quality across millions of connection points
Optimized Mechanical Properties: Fully annealed copper ribbons with >25% elongation minimize stress on fragile silicon cells during assembly and thermal cycling
Advanced Flux Chemistry
Triple-Action Performance: Our flux simultaneously removes oxides, prevents re-oxidation during soldering, and improves solder wetting for perfect metallurgical bonds
No-Clean Formula: Eliminates post-soldering cleaning steps with inert, non-conductive residues that meet IPC standards for reliability
Controlled Activity: Precisely balanced chemistry removes oxides effectively without damaging anti-reflective coatings or silver electrodes
Manufacturing Excellence
MBB Technology Compatible: Special ultra-fine ribbon specifications support advanced Multi-Busbar designs with 9, 12, or more busbars
Lead-Free Options: Environmentally compliant solder alloys available for markets requiring RoHS compliance
Batch Consistency: Rigorous quality control ensures uniform properties across production batches
Performance Benefits
Reduced Series Resistance: High-conductivity materials and perfect solder joints minimize power losses in the electrical network
Enhanced Reliability: Soft copper and optimized flux chemistry prevent micro-cracks and ensure 25+ year module lifetime
Improved Yield: Consistent material quality reduces defects and increases first-pass yield in module production
Product Applications
Solar Module Manufacturing
Our soldering materials are essential consumables for all types of photovoltaic module production, from residential rooftop panels to utility-scale solar farms. The ribbons and flux work seamlessly with Ooitech's complete production line equipment including tabber stringers, bussing machines, and laminators to create reliable electrical connections in modules ranging from 5MW to 1GW annual capacity.
Technology Compatibility
PERC Modules: Optimized for Passivated Emitter and Rear Cell technology with specialized rear-side connection solutions
TOPCon Applications: Compatible with Tunnel Oxide Passivated Contact cells requiring gentle handling
HJT/SHJ Modules: Low-temperature flux options available for temperature-sensitive heterojunction cells
Bifacial Designs: Transparent backsheet compatible ribbons for maximum rear-side light capture
Shingled Technology: Ultra-thin ribbons for overlapping cell designs
IBC and ABC Cells: Specialized all-back-contact ribbon configurations
Module Types and Sizes
Standard Formats: G1, M6, M10, M12 wafer-based modules
High-Power Applications: Ribbons rated for modules up to 700W with high current requirements
Flexible Modules: Special soft-temper ribbons for bendable thin-film applications
Building-Integrated PV: Aesthetic ribbon options for BIPV installations
Contact and Purchase
Get Your Solar Production Materials from Ooitech
Ensure the quality and reliability of your solar module production with Ooitech's premium soldering ribbons and flux solutions. As your comprehensive solar manufacturing partner, we provide not only these critical consumables but also complete production line equipment, training, and ongoing technical support.
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Why Choose Ooitech:
Complete solar panel production line solutions from 5MW to 1GW capacity
Comprehensive equipment portfolio including laser cutting, stringing, lamination, and testing
Expert training on material selection and process optimization
Global delivery and installation support
Long-term technical service and spare parts availability
Request a Quote Today! Our technical experts will help you select the optimal ribbon and flux specifications for your specific cell technology and production requirements. Contact us for samples, technical data sheets, and competitive pricing on bulk orders.
