SCR ESD SCR-Based Dual-Directional ESD Protection Device with High Holding Voltage

摘要

Disclosed is an ESD protection device having a high holding voltage and bidirectional characteristics. This is by adding an N+ region and a gate in the conventional LTDDSCR structure, and forming the added N+ region to be electrically connected to the P+ bridge region. can have In addition, since the ESD discharge in the forward direction and the ESD discharge in the reverse direction are discharged so that they are symmetrical to each other, the effect on the high holding voltage formed in the forward direction can be applied equally in the reverse direction.