A VERIFICATION OF THE PHYSICAL REASON FOR THE CURRENT GAIN FALL-OFF AT HIGH CURRENT LEVELS

• 作 者: 林昭(火回) 许惠英
• 机 构: Department of Physics Peking University,Department of Physics,Peking University,
• 出 处: Journal of Electronics(China)
• 发表日期: 1986年01期
• 关键词: starting collector horizon verified varia begin 阴月 心书 Hunter 二七

In this paper,starting from the theory of the base widening effect,it is demonstrated by asimple calculation that the critical current density of a collector follows T~(-1.3) law.And it isconfirmed by experiment.We obtain from the temperature characteristics of the transistors.Thatthe physical reason for the current gain fall-off at high current levels is the base widening effect.

In this paper, starting from the theory of the base widening effect, it is demonstrated by asimple calculation that the critical current density of a collector follows T ~ (-1.3) law. And it isconfirmed by experiment.We obtain from the temperature characteristics of the transistors.Thatthe physical reason for the current gain fall-off at high current levels is the base widening effect.