S3X58-M650 solder paste is an ICT testable, halogen-free SAC 305 alloy. Properties include low voiding, high print speeds, and fine-pitch (µBGA, 0.4 mm pitch) capability.
 
S3X70-M407 Pb-free no-clean solder paste for ultra-fine-pitch applications uses a Type 5 powder; has been formulated for 0.2 mm pitch (µBGA) devices and 01005 components. Is said to wet in air environments and is low voiding.
 
Koki Co. Ltd., www.ko-ki.co.jp