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整流二极管的正向特性（IF-VF特性）
下载“第Ⅱ章：二极管” (PDF:895KB)
整流二极管的正向特性随电流电平和温度的变化而变化。
在低电流区，VF在高温时较低，而在大电流区的情况则相反。
一般来说，使用二极管时，应在Q点（上述两种情况的交叉点）以下有足够的温度裕量。
（1）以载流子迁移为主的蓝色区域：VF随着温度的升高而降低。
由于载流子在受热时很容易移动，因此VF在高温时比低温时低。
（2）以载流子碰撞为主的红色区域：VF随着温度的升高而升高。
当大电流流动时，许多载流子会移动。在高温情况下，载流子之间的碰撞概率增加，VF比低温时高。
