Solder balls possess high sphericity, high purity, excellent conductivity, and soldering stability, enabling high-density interconnects, improved heat dissipation efficiency, and support for the miniaturization of electronic devices.
High-Precision and High-Reliability Connections
Solder balls exhibit extremely high sphericity and micron-level diameter tolerances (down to 80μm), ensuring precise alignment and soldering in advanced packages such as BGA/CSP. Their smooth, defect-free surface and low oxygen content significantly reduce defects such as cold solder joints and bridging, resulting in a solder joint yield consistently above 99.6%.
Support for High-Density and Miniaturized Packaging
With the explosive growth in chip I/O pin counts, traditional pins are insufficient to meet space requirements. Solder balls replace pins to achieve matrix arrangements, increasing interconnect density by 5–10 times and adapting to the precision soldering needs of 0.15mm pads and 0.25mm pitch. In the trend towards miniaturization, 10–30μm solder balls are already used in 3D IC and HBM memory packaging.
Excellent Electrical and Thermal Performance: Solder balls shorten the signal transmission path, reduce parasitic capacitance and inductance, improve high-frequency signal integrity, and are compatible with high-speed interfaces such as PCIe 5.0/6.0. When combined with copper pillar structures, thermal conductivity is more than 40% higher than pure tin, effectively alleviating the heat dissipation pressure of high-power devices such as AI chips and automotive electronics.
Strong Environmental Protection and Process Compatibility: Mainstream lead-free alloys (such as Sn96.5Ag3Cu0.5) are used, complying with RoHS environmental standards. Suitable for various processes such as laser jetting and automated ball placement, it supports nitrogen-protected soldering, reduces oxidation, and enables fully automated production.
