Diode 1N5408 1000V 3A

The Diode 1N5408 is a general-purpose silicon rectifier diode rated for 1000 V reverse voltage and 3 A forward current. It is the highest-voltage part of the 1N5400 series and a heavier-duty alternative to the 1 A 1N4007, used wherever a circuit needs to rectify AC or block reverse current at higher currents, such as power supplies, battery chargers and motor circuits.

Diode 1N5408 Specifications

• Type: silicon rectifier diode, 1N5400 series
• Peak repetitive reverse voltage: 1000 V
• Average forward current: 3 A
• Peak surge current: 200 A (single half sine wave)
• Package: DO-201AD, axial leads, through-hole
• Marking: band on the cathode (−) end

Diode 1N5408 Applications

• Bridge and half-wave rectifiers in power supplies
• Reverse-polarity protection for 12 V and 24 V circuits
• Flyback diodes across DC motors, relays and solenoids
• Battery chargers and inverters
• Replacement diode in electronics repair

What's in the Box

• 1 × 1N5408 diode

Tip: The band on the body marks the cathode (−). At 3 A the diode drops about 1 V and turns roughly 3 W into heat, so keep the leads long or solder it to a wide copper area. It is a standard-recovery diode, so use a fast or Schottky type in switching power supplies.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.