What Is the 1N5822? 3A Schottky Diode and Uses
October 19, 2026 4 min read
Quick answer
The 1N5822 is a Schottky diode that carries 3 A (40 V, ~0.5 V drop). With its low drop and speed it is used as a high-current buck/boost catch diode, low-loss rectification and reverse-polarity protection; it is the 3 A sibling of the 1N5819. For high voltage a normal rectifier (1N5408) is needed.
The 1N5822 is a Schottky diode that carries 3 A. With a low forward drop and fast switching it is used in efficient, high-current applications — the stronger sibling of the 1 A 1N5819. For the concept, see what is a Schottky diode.
What is the 1N5822 used for?
High-current buck/boost regulator catch diode, low-loss rectification, reverse-polarity protection and OR-ing. Its 3 A capacity suits medium-power SMPS and solar/battery systems.
Specifications
| Parameter | Value |
|---|---|
| Type | Schottky diode |
| Reverse voltage (VR) | 40 V |
| Forward current | 3 A |
| Forward drop (VF) | ~0.5 V |
| Body | DO-201AD |
Limitations
- Low reverse voltage (40 V); for high voltage use a normal rectifier (1N5408).
- Schottky reverse leakage rises with temperature.
Equivalents
- 1N5819: the 1 A version.
- SR360 / SB360: 3 A / 60 V Schottky.
- MBR340: a 3 A Schottky.
Find it in our catalog
Use the 1N5822 search.
Frequently Asked Questions
What is the 1N5822?+
The 1N5822 is a Schottky diode that carries 3 A (40 V reverse voltage, ~0.5 V drop). It is used as a high-current buck/boost catch diode and for low-loss rectification; it is the 3 A sibling of the 1N5819.
What is the difference between the 1N5822 and 1N5819?+
Both are 40 V Schottky diodes; the 1N5822 carries 3 A and the 1N5819 carries 1 A. For a high-current SMPS the 1N5822 is preferred.
What voltage/current is the 1N5822?+
Its reverse voltage is 40 V, forward current 3 A and forward drop ~0.5 V. If you need higher voltage, use a normal rectifier (1N5408).
What is an equivalent to the 1N5822?+
The 1 A version 1N5819; the 3 A/60 V SR360/SB360; the MBR340.