PN结反偏的判断标准以哪个为准

osiergarland

以前的印象是大多数教材和资料里面都将Vn>Vp作为反偏的标准，今天看到Martin的 《analog integrated circuit design》一书中提到PN 正向电压小于一定值就称为反偏，原文如下：A silicon diode having an anode-to-cathode (i.e., p side to n side) voltage of 0.4 V or less will not be conducting appreciable current. In this case, it is said to be reverse-biased. If a diode is reverse-biased, current flow is primarily due to thermally generated carriers in the depletion region, and it is extremely small. Although this reverse-biased current is only weakly dependent on the applied voltage, the reverse-biased current is directly proportional to the area of the diode junction.
为什么会有这样不同的定义，请高人解答。

hehuachangkai

个人觉得，反偏是反偏，导通是导通，很简单，不混淆就好。。