The delay time before the onset of second breakdown was measured at the collector-base junctions of four types silicon n-p-n planar transistors. The dependence of delay time on input power was found to obey a relationshiop of the form pτn = constant. The value of n increased slightly, and the value of the constant decreased, with decreasing collector doping. For all four types of transistors, n was close to 0.5, and when a curve of the form pτ 1 2 = constant was fitted to the experimental data, the constant could be related to the temperature at which the collector impurity concentration becomes equal to the intrinsic carrier concentration.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering
- Materials Chemistry