The 1N58xx series consists of 1N5817 through 1N5822. These are medium power, fast, low voltage Schottky diodes.
The 1N5817, 1N5818 and 1N5819 are 1 amp diodes, available in 20, 30 and 40 volt ratings respectively. The 1N5820, 1N5821 and 1N5822 are 3 amp diodes, available in 20, 30 and 40 volt ratings respectively.
|Voltage||1 A part||3 A part|
The 1N581x are typically packaged in the DO-41 case, and in many cases are interchangeable with the 1N4001 series. The 1N582x are typically packaged in the DO-201AD case, and in many cases are interchangeable with the 1N54xx series.
Being Schottky diodes, the 1N58xx parts have roughly half the forward voltage drop of the 1N400x/1N540x series diodes, which improves efficiency in applications where they are usually forward-biased, such as power converters. The cost is a lower voltage rating and higher reverse leakage.