Design of a novel high holding voltage LVTSCR with embedded clamping diode
Zhu Ling, Liang Hai-Lian, Gu Xiao-Feng, Xu Jie
       

Cross sections and the corresponding internal equivalent circuits of the DC-LVTSCR cutting along the (a) A–A′ and (b) B–B′ lines marked in Fig. 1(b).