|
The saturation current (or scale current), more accurately, the reverse saturation current, is that part of the reverse current in a semiconductor diode caused by diffusion of minority carriers from the neutral regions to the depletion region. This current is almost independent of the reverse voltage. (Steadman 1993, 459) ''I''S, the reverse bias saturation current for an ideal p–n diode, is given by (Schubert 2006, 61): are the carrier lifetimes of holes and electrons, respectively. Note that the saturation current is ''not'' a constant for a given device; it (varies ) with temperature; this variance is the dominant term in the temperature coefficient for a diode. A common rule of thumb is that it doubles for every 10°C rise in temperature. (Bogart 1986, 40) ==References== * Steadman, J. W. (1993). "Electronics" in R. C. Dorf, ''The Electrical Engineering Handbook.'' Boca Raton: CRC Press. * Schubert, E. Fred. (2006). "LED basics: Electrical properties" in ''Light-Emitting Diodes'': Cambridge Press. * Bogart, F. Theodore Jr. (1986). "Electronic Devices and Circuits": Merill Publishing Company 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Saturation current」の詳細全文を読む スポンサード リンク
|