本文用电荷控制参数讨论了缓变结指数扩散场器件的瞬态特性,同时将这些器件与均匀基区器件作了简单的比较。采用在饱和区内重新分开传送电流的方法解释了大信号参数和小信号参数关系中的误差。文中指出,高速开关器件工作频率的主要限制与其说是由截止频率决定,还不如说是由结电容和存储时间常数决定。 In this paper, we discuss the transient characteristics of devices with slow junction index exponential with charge control parameters, and make a simple comparison between these devices and uniform base devices. The method of re-dividing the transmitted current in the saturation region explains the error in the relationship between large signal parameters and small signal parameters. The article pointed out that the main limit of high-speed switching device operating frequency is not so much by the cut-off frequency, not as it is determined by the junction capacitance and storage time constant.