Shown in the cross-sectional view on the left is a deep EOS current (I_PP) distribution design from Amazing. Since the energy of surge EOS transient is in micro-seconds, a huge joule heat energy will be generated inside the protection device and transferred to the substrate below, effectively improving the I_PP withstand energy of the TVS. In order to achieve a better system surge EOS protection purpose, Amazing uses this technology to develop the surge EOS TVS for signal use and the EOS TVS for power use.