Article 9: Analysis and Selection Avoidance Scheme for Reverse Leakage Current of Schottky Diodes

Many engineers have provided feedback that Schottky diode circuits have high static power consumption, standby leakage, and inaccurate voltage sampling. The core reason is that Schottky reverse leakage current is greater than that of ordinary silicon diodes.

Applicable scenarios for avoiding pitfalls:

1. Devices with high voltage, low current, and extremely low standby power consumption should be used with caution with Schottky, as they are prone to excessive leakage;  diode

2. It is not recommended to use Schottky for battery sampling and weak signal detection circuits;

3. Low voltage high current rectification and freewheeling circuits, Schottky is the optimal choice.

Solution: In high-precision and low leakage scenarios, replace with fast recovery diodes or precision rectification devices; The ordinary power rectification scenario continues to use Schottky, balancing efficiency and cost. diode