A paste that is too thin (low viscosity) may lead to the filet slumping. Viscosity is important as a paste that is too thick (high viscosity) may lead to a bad print in the form of an insufficient filet.
When speaking of solder paste, one parameter that is often discussed is viscosity. Ueshima UNICORN II Tensile Tester Model TS-2633/TS-2643.Ueshima Constant Stress/Strain Fatigue Tester (Series FT-3130).Ueshima RTM Friction Tester (MODEL FR-7225).MORITA TECH High Performance EMC Noise Scanner (WM7000 Series).Newly Tsuchiyama Automatic FAI Tester (n=1 Checker).
