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1N4728 Zener Diode (Pack of 2)

SKU: I2JM5CDW58
The 1N4728 Zener Diode is a reliable voltage-regulating semiconductor device designed to provide a stable reference voltage of 3.3V in electronic circuits. With a power dissipation rating of 1 Watt, this diode is widely used for voltage regulation, overvoltage protection, clipping circuits, and power supply stabilization. It operates in reverse-bias mode and maintains a nearly constant voltage across its terminals...
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Specifications

Specifications:

Part Number: 1N4728
Zener Voltage (Vz): 3.3V
Power Dissipation: 1W
Package Type: DO-41
Mounting Type: Through-Hole
Polarity: Cathode marked with a band
Operating Mode: Reverse Breakdown (Zener Region)

Additional Resources

1N4728.PDF

FAQ

1. What is a Zener diode?

A Zener diode is a special type of semiconductor diode designed to operate in reverse bias mode and maintain a stable voltage across its terminals, making it useful for voltage regulation and protection circuits.

2. What are the common applications of a Zener diode?

Zener diodes are commonly used for voltage regulation, voltage reference generation, overvoltage protection, clipping circuits, and power supply stabilization in electronic devices.

3. How does a Zener diode regulate voltage?

When the reverse voltage applied to a Zener diode reaches its Zener breakdown voltage, the diode conducts current while maintaining a nearly constant voltage across itself, helping regulate the output voltage.

4. Can a Zener diode be used for circuit protection?

Yes, Zener diodes are widely used to protect sensitive electronic components from voltage spikes and overvoltage conditions by limiting the voltage to a safe level.

5. What should be considered when selecting a Zener diode?

Important factors include the Zener voltage rating, power dissipation capability, package type, tolerance, and the current requirements of the intended application.

View full product details

The 1N4728 Zener Diode is a reliable voltage-regulating semiconductor device designed to provide a stable reference voltage of 3.3V in electronic circuits. With a power dissipation rating of 1 Watt, this diode is widely used for voltage regulation, overvoltage protection, clipping circuits, and power supply stabilization. It operates in reverse-bias mode and maintains a nearly constant voltage across its terminals when the breakdown voltage is reached.

Packaged in the industry-standard DO-41 axial-lead package, the 1N4728 offers easy mounting and excellent durability for both prototyping and permanent circuit installations. It is commonly used in power supplies, microcontroller projects, communication equipment, and general-purpose electronic applications where a stable 3.3V reference is required.

Key Features

  • Zener breakdown voltage: 3.3V
  • Power dissipation: 1 Watt
  • Low-cost and highly reliable design
  • Excellent voltage regulation characteristics
  • Suitable for voltage stabilization and protection circuits
  • Standard DO-41 axial package
  • Wide operating temperature range
  • Easy through-hole mounting

Applications

  • Voltage regulation circuits
  • Power supply stabilization
  • Overvoltage and surge protection
  • Reference voltage generation
  • Signal clipping and clamping circuits
  • Embedded systems and microcontroller projects
  • Consumer electronics and industrial equipment