Date：2024-12-25 Categories：Product knowledge Hits：281 From：Guangdong Youfeng Microelectronics Co., Ltd
The reverse current of rectifier diodes has another name in use: leakage current. The reverse current of rectifier diodes is also one of the parameters to be considered in the selection process.
Reverse current IRM refers to the reverse current flowing through a rectifier diode at a specified temperature and reverse repetitive peak voltage VRRM. The smaller the reverse current, the better the unidirectional conductivity of the tube.
It is worth noting that there is a close relationship between reverse current and temperature, with the reverse current doubling for every 10 ℃ increase in temperature. At a reverse voltage of 1000V and 25 ℃, the reverse current IRM of the 1N4007 silicon rectifier diode is only 5 μ A,
When the temperature rises to 100 ℃, the reverse current IRM increases to 50 μ A. Silicon rectifier diodes have better stability than germanium diodes at high temperatures.
From this, it can be seen that in rectifier diode circuits, the higher the temperature, the greater the reverse current IRM. So in order to ensure the accuracy of the use of rectifier diodes, everyone must analyze the operating temperature of rectifier diodes when selecting them.
Previous： Classification, Structure, and Principle of MOSFET
