Asymmetrical gate turn-off thyristor having anode shorts and a reduced turn-on current

摘要

the traditional thyristor cathode with a layer of n divided into areas such as (11), two principal axes intersecting elongated with a centre and surmounted by a metal layer (11), a trigger (2) with a coating (2a) of the areas (11), a layer of base (3).a first sub layer (30) and a second doped layer (31) and a highly doped layer (4), and a metal anode (areas (4a) and short circuit (32) are formed by the ends of the anode (32) of the sub layer (31) through the layer of the anode (4) in the coating (4a).according to the invention, the areas of short circuit (32), instead of being circular, and in line with the central areas of the cathode are arranged in bands of marginal areas of large unit cells defined by the cathode (11) areas, symmetrically to the centre of these cells.these areas can affect the form of strips parallel to the long axis of the concentric rings or intersecting the axes of cells arranged in rings on their ends. the triggering of the thyristor can be reduced by a factor of four, without affecting the other. performance.