The 1N540 Series diodes include a range of high-current rectifier diodes suitable for general-purpose power rectification applications. Each diode in this series supports up to 3A forward current, with voltage ratings ranging from 50V (1N5400) to 1000V (1N5408). These diodes are perfect for use in AC-to-DC conversion, battery chargers, power adapters, and other electronic circuits requiring reliable power handling.
All variants are housed in the DO-201AD axial package and feature low forward voltage drop, high surge current handling, and fast recovery time, making them reliable choices for both hobbyists and professionals.
Key Features of the 1N540 Series Diodes
- Rated for up to 3A continuous forward current
- High reverse voltage ratings (50V to 1000V)
- Surge current capability up to 200A
- Standard DO-201AD axial package
- Reliable silicon junction construction
- Suitable for AC rectification and power regulation
Technical Specifications of the 1N540 Diodes
| Variant | Max Reverse Voltage | RMS Voltage | Forward Current | Surge Current | Forward Voltage Drop | Package |
| 1N5400 | 50V | 35V | 3A | 200A | 0.85–1.1V | DO-201AD |
| 1N5401 | 100V | 70V | 3A | 200A | 0.85–1.1V | DO-201AD |
| 1N5402 | 200V | 140V | 3A | 200A | 0.85–1.1V | DO-201AD |
| 1N5404 | 400V | 280V | 3A | 200A | 0.85–1.1V | DO-201AD |
| 1N5406 | 600V | 420V | 3A | 200A | 0.85–1.1V | DO-201AD |
| 1N5407 | 800V | 560V | 3A | 200A | 0.85–1.1V | DO-201AD |
| 1N5408 | 1000V | 700V | 3A | 200A | 0.85–1.1V | DO-201AD |
Applications of the 1N540 Series Diodes
- Bridge rectifiers in AC-DC power supplies
- Battery chargers
- Solar panel DC blocking
- LED drivers
- Power adapters
- General purpose rectification
What’s in the Package and Recommended Usage Tips
- 1x 1N540x Diode (choose variant: 1N5400 to 1N5408)
- Use a heat sink or airflow for extended high-current usage.
- Ensure the reverse voltage is below the diode’s maximum rating.
- Add parallel diodes for higher current needs with balanced loading.
1N540 Series Diodes PDF Datasheet
Below is a downloadable PDF containing the technical information about all the 1N540 series diodes… Open the link to view and download the file… 1N540 Series Diodes PDF…
1N540 Pinout Configurations
| Pin | Function |
| Anode | Connects to positive |
| Cathode | Connects to load (banded side) |
1N540 Alternatives or Variants
- FR307 – Fast recovery version (3A, 1000V)
- 1N5399 – 1.5A version for smaller circuits
- 1N5822 – 3A Schottky with lower voltage drop
- UF5408 – Ultrafast recovery version of 1N5408
Check out the lower-rated 1N400 Series Diodes…
Why We Recommend It
The 1N540x series offers an ideal blend of affordability, durability, and power-handling capacity. Whether you’re building a custom power supply or replacing old diodes, these rectifiers deliver reliable performance.
Customer Reviews
⭐️⭐️⭐️⭐️⭐️ “Very reliable for my transformer-based power supply.”
⭐️⭐️⭐️⭐️ “Used the 1N5408 in a solar inverter—no issues.”
⭐️⭐️⭐️⭐️⭐️ “Highly recommend for hobby electronics!”
Why Buy from Dukatronic Kenya?
- Genuine components sourced from trusted suppliers
- Affordable pricing with bulk options available
- Fast delivery within Kenya
- Great customer support for your DIY and repair projects
Power up Your Circuits Today!
Choose the right 1N540x diode variant for your voltage needs and ensure smooth, reliable rectification in all your power circuits.
Order now from Dukatronic and experience premium quality at unbeatable prices.
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