Study on combined channel parameters of a static induction transistor

摘要

The electric performance of a static induction transistor (SIT) depends strongly on the channel parameters of the device. In the present paper, the ratio l_c/d_c is researched, which is an essential combined channel parameter not only for Ⅰ-Ⅴ characteristics but also for the high-current performance of a high-frequency SIT (HF SIT). The other key combined channel parameter, pinch factor β, is also discussed which embodies the general control criterion of fabrication parameters in determining whether it is a mixed, triode-like or pentode-like Ⅰ-Ⅴ characteristic. The design guidelines which are available and convenient for design and fabrication of an HF SIT are provided, particularly for the mixed Ⅰ-Ⅴ characteristics.