SolderKing Expands SK P2-5 Range with SAC0307 Low-Silver Solder Paste
SolderKing released SAC0307, a low-silver alloy option within its SK P2-5 solder paste family designed to support flexible alloy selection while maintaining the same established flux chemistry and process settings. The paste enables manufacturers to evaluate alternative alloy compositions without modifying existing production parameters. Designed for surface-mount assembly applications requiring reliable stencil printing and consistent wetting across common PCB finishes including OSP, ENIG, immersion silver, tin and HASL. The flux formulation is designed to reduce voiding and head-in-pillow defects while leaving minimal residue after reflow. The material complies with J-STD-004B and Bellcore ECM requirements. Available in Type 4 (20–38µm) and Type 5 (15–25µm) powder grades to support fine-pitch and high-density assemblies. Extended tack and open times exceeding three days provide flexibility for longer production runs or staged builds, while a 12-month refrigerated shelf life supports material inventory management.
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