BY127 Diode (BY-127)

BY127 Diode (BY-127)

The BY127 is a general-purpose high-voltage rectifier diode widely used in power supplies, voltage multipliers, and electronic circuits requiring stable rectification at high voltages. It offers a 1000V peak reverse voltage capability with a 1A forward current rating, making it suitable for medium-power applications.
The diode is encapsulated in the axial-leaded DO-41/BY-127 package, allowing easy PCB mounting and reliable operation. Its robust design provides good performance in both AC-to-DC rectification and high-voltage hobby or educational circuits.

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Features

• Peak reverse voltage: 1000V
• Forward current rating: 1A
• Axial-leaded BY-127 / DO-41 package
• Low forward voltage drop
• Good thermal and electrical stability
• Reliable high-voltage operation
• Easy to solder and mount on PCBs or breadboards
• Suitable for both low- and medium-frequency rectification

Applications

• High-voltage power supply rectification
• Voltage multiplier circuits
• General-purpose AC-to-DC conversion
• Hobby electronics and educational power projects
• LED drivers and chargers (low current)
• High-voltage test circuits
• DIY and prototyping applications
• Replacement for similar 1A / 1kV diodes

Advantages

• High-voltage handling capability (up to 1000V)
• Simple and reliable for general rectifier use
• Low cost and widely available
• Strong axial package enables easy mounting
• Good durability under repetitive loads
• Suitable for a wide range of electronic projects

BY127 Diode Datasheet