Indium Corp. offers its RMA-155 Pb-Free Solder Paste for customers who are required to use RMA materials. RMA-155 is suitable for high-complexity boards with a variety of component sizes, as well as simple assemblies. Compatible with both SnPb and SAC alloys, the paste delivers consistent transfer efficiencies and a strong oxidation barrier, even for long and hot profiles. It is halogen-free, resists graping on small components and tiny deposits, prevents head-in-pillow defects, and minimizes voiding for BGAs and large thermal planes (QFNs). RMA-155 conforms to the RMA classification for QQ-S-571F. It is suitable for military and aerospace PCB assemblies, especially those still required to use RMA-classified fluxes. This solder paste also enables the transition to Pb-free because the flux is compatible with both Pb-containing and Pb-free alloys.
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