5pcs 1n5408 diode

🔹 5PCS 1N5408 – 3A 1000V General Purpose Rectifier Diode

A robust and reliable standard recovery rectifier diode in the popular 1N540x series. Designed for high current and high voltage applications, it is perfect for converting AC to DC in power supplies, as well as for general-purpose reverse polarity protection and freewheeling/clamping.

✅ Specifications:

• Part Number: 1N5408

• Type: General Purpose / Standard Recovery Rectifier Diode

• Max Repetitive Reverse Voltage (VRRM): 1000V

• Max Average Forward Rectified Current (IO): 3A

• Peak Forward Surge Current (IFSM): 200A (8.3ms single half-sine wave)

• Forward Voltage (VF): ~1.0V (Typ. at 3A)

• Package: DO-201AD (Axial Lead)

• Lead Material: Tinned Copper

• Quantity: 5 pieces

⚙️ Key Features:

• High Current & Voltage Rating: The 3A / 1000V rating makes it suitable for demanding mains-frequency rectification and industrial applications.

• Rugged Construction: The glass-passivated junction housed in a DO-201AD package ensures durability and reliable performance.

• Low Forward Voltage Drop: Improves efficiency by minimizing power loss as heat.

• Axial Leads: Easy to mount on PCBs, perfboards, or in point-to-point wiring. Cathode band is clearly marked for identification.

• Standard Recovery: Ideal for 50/60Hz line frequency rectification (bridge & center-tap configurations).

📦 Typical Applications:

• Power Supply Rectification: The primary use – in full-wave bridge or center-tapped rectifier circuits for AC/DC adapters, battery chargers, and linear power supplies.

• Reverse Polarity Protection: Placed in series with the power input to block current if the supply is connected backwards.

• Freewheeling / Flyback Diode: Used across inductive loads (relays, solenoids, motors) to suppress voltage spikes and protect switching components.

• Blocking Diode: In solar panels or battery systems to prevent reverse current flow.

• General DIY & Repair: A versatile and strong diode to have on hand for countless electronic projects and equipment repairs.

🔧 Polarity Identification & Usage:

• Cathode (-) End: Marked with a grey/silver band around one end of the diode body.

• Anode (+) End: The unmarked end.

• In Circuit: Current flows from the Anode (no band) to the Cathode (banded end).

• Heatsinking: For continuous operation near the 3A rating, proper heatsinking or PCB copper plane is highly recommended to dissipate heat (Power Loss ~ 3W).

⚠️ Important Design Notes:

• Standard Recovery: Not suitable for high-frequency switching (SMPS). For that, use fast or ultrafast recovery diodes.

• Surge Rating: Can handle high inrush currents, making it robust for capacitive input filters.

• Replacement: A direct and common upgrade/replacement for the 1N4007 in circuits requiring higher current capability.