HIRAI provides LTCC Packaging support to the customers worldwide. Glass-ceramics are fired under 1000 degrees, therefore Ag, AgPd and Au can be used as co-fired inner conductor. In addition, the signal delay becomes shorter due to low dielectric constant which is lower than Alumina substrates. Because thermal expansion coefficient of LTCC is similar to silicon, it is easy to bond die directly to the pad or to be connected flip chip.