 This JEDEC device number series is available in the DO-41 axial package, and similar diodes are available in SMA and MELF surface mount packages (in other part number series).The 1N540x (or 1N5400) series is a similarly popular family of diodes for higher-current 3 A applications.These diodes are typically available in the larger DO-201AD axial package to dissipate heat better.