Smart Equipment Technology (SET), a leading supplier in high accuracy die-to-die and die-to-wafer bonders, announced its participation in the 3D integration consortium of IRT Nanoelec, which is headed by CEA-Leti. SET joins Leti, STMicroelectronics and Mentor Graphics to develop advanced 3D die-to-wafer stacking technologies, using direct copper-to-copper bonding.