3.9V Zener Diode 1N4730A (5 Pcs)

The 1N4730A is a 3.9V, 1W Zener diode designed for voltage regulation, voltage reference, overvoltage protection, and voltage clamping applications. Operating in reverse bias, it maintains a stable 3.9V output, making it ideal for power supplies, microcontroller circuits, Arduino projects, industrial electronics, and DIY applications. It comes in a DO-41 through-hole package for easy PCB and breadboard mounting.

Features

• Full Name: 1N4730A 3.9V 1W Zener Diode
• 3.9V nominal Zener voltage
• 1W power dissipation
• ±5% voltage tolerance
• Low leakage current
• High reliability and stability
• Through-hole DO-41 package
• Suitable for voltage regulation and protection circuits

Specifications

Note: The diode regulates at 3.9V only when connected in reverse bias with a suitable series current-limiting resistor.

Pin Configuration

Note: The silver/gray band on the diode body indicates the Cathode (K) terminal.

Applications

• Voltage regulation
• Voltage reference circuits
• Overvoltage protection
• Power supply circuits
• Arduino and microcontroller projects
• Sensor interface circuits
• Industrial electronics
• Battery-powered devices
• DIY electronics projects

Advantages

• Stable 3.9V output
• High reliability
• Low leakage current
• Compact through-hole package
• Easy to install
• Cost-effective
• Long operational life

Size

Package Includes

• 5 × 3.9V Zener Diode (1N4730A)

Note: Always use a series resistor to limit the current through the Zener diode. The 1N4730A is intended for voltage regulation and protection applications rather than standard rectification. Ensure the 1W maximum power dissipation rating is not exceeded for safe, reliable, and long-lasting operation.