The 1N5408 is a power rectifier diode with a maximum forward current of 3A and voltage drop of 1V. It is commonly used in Switching or rectifying applications. The specifications of the 1N5408 diode are:

• Forward Voltage Drop: 1V (at 3A)
  
• Forward current: 3A
  
• Peak Forward Current: 200A
  
• Reverse Voltage: 1000V
  
• Available in DO-201 Package