SiP (System in Package) relies on heterogeneous integration and multi-chip interconnection technologies. Multiple dies and passive components are integrated within a compact footprint to realize miniaturized, high-density and multi-functional system-level signal interaction. It serves as a core route for the miniaturization upgrade of high-end products in computing, communication and optoelectronics sectors, and directly governs module integration, signal integrity and power consumption performance of end devices.

Industry Challenges & Solutions 

SiP features fine pitch and sophisticated structures. Defects such as voids, weak interfacial bonding, high thermal resistance and thermal crosstalk between adjacent devices may emerge during die attach, vacuum reflow and thermocompression bonding, imposing stringent requirements on the cleanliness, wettability and stability of soldering materials. 

Huaqing delivers a complete material portfolio including high-purity solder pastes, solder preforms, dedicated fluxes and pure indium thermal foils. Tailored for fine-pitch die attach and thermal management of SiP, our solutions suppress soldering voids, strengthen interfacial bonding and guarantee long-term reliable operation of high-density SiP modules.