Core Service Introduction
Our No Clean Flux soldering material system is the core foundation of high-reliability SMT and through-hole assembly processes. It delivers superior soldering performance while eliminating the need for post-soldering cleaning. Industry-leading, RoHS-compliant no clean flux formulations are used, optimized for both lead-free and leaded soldering processes, ensuring consistent, high-quality solder joints with minimal ionic residues, no impact on electrical performance, and full compliance with IPC international standards.
Core Performance
Our no clean flux formulations deliver excellent wetting performance across a wide range of component packages and PCB surface finishes, including HASL, ENIG, OSP, and Immersion Silver. Oxide layers on component leads and PCB pads are effectively removed, ensuring reliable solder joint formation for fine-pitch components and minimizing soldering defects such as cold joints, dewetting, and bridging.
Technical Advantages
Minimal Residues: The advanced no clean formulation leaves only minimal, non-corrosive, non-conductive residues after soldering. Time-consuming and costly post-soldering cleaning processes are eliminated, reducing production lead time and costs, and avoiding potential damage to components and PCB substrates caused by cleaning.
Wide Compatibility: Our no clean flux is fully compatible with all mainstream soldering processes used in production, including SMT solder paste printing, reflow soldering, selective wave soldering, manual soldering, and BGA rework and reballing. It is optimized for both nitrogen reflow and air reflow environments, ensuring consistent performance across the entire assembly workflow.
Compliance
All no clean flux materials are fully compliant with RoHS, REACH, and other global environmental regulations. Zero halogen and low VOC formulations meet the strictest environmental requirements for global electronics manufacturing. The materials are certified for use in automotive, medical, and industrial applications, with complete compliance documentation available.
Quality Assurance
Material Qualification: All no clean flux materials undergo rigorous incoming quality inspection and process validation before being used in production, including wetting performance testing, solder joint reliability verification, ionic residue testing, and surface insulation resistance testing, ensuring long-term electrical reliability of assembled PCBA.
Process Optimization: Our engineering team optimizes soldering process parameters for each specific PCB design and component package, maximizing the performance of the no clean flux and ensuring consistent, high-yield assembly across prototype and mass production runs.
Reliability Verification: Comprehensive reliability testing is conducted on assemblies using our no clean flux, including thermal cycling, humidity and heat aging, and corrosion resistance testing, verifying that flux residues do not cause long-term reliability issues in harsh operating environments.
Typical Application Fields
Our No Clean Flux soldering system is used as standard across all our PCB assembly services. It is suitable for all electronics manufacturing applications including industrial control systems, medical devices, automotive electronics, 5G communication equipment, IoT devices, consumer electronics, and aerospace electronics. It is particularly ideal for high-density PCB assemblies, fine-pitch components, and products where post-soldering cleaning is not feasible or may cause damage to sensitive components.
